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154 Commits

Author SHA1 Message Date
Lance Release
64eb43229d Bump version: 0.13.0-beta.2 → 0.13.0 2024-09-10 20:12:35 +00:00
Lance Release
c31c92122f Bump version: 0.13.0-beta.1 → 0.13.0-beta.2 2024-09-10 20:12:35 +00:00
Gagan Bhullar
205fc530cf feat: expose hnsw indices (#1595)
PR closes #1522

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-10 11:08:13 -07:00
BubbleCal
2bde5401eb feat: support to build FTS without positions (#1621) 2024-09-10 22:51:32 +08:00
Antonio Molner Domenech
a405847f9b fix(python): remove unmaintained ratelimiter dependency (#1603)
The `ratelimiter` package hasn't been updated in ages and is no longer
maintained. This PR removes the dependency on `ratelimiter` and replaces
it with a custom rate limiter implementation.

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-09 12:35:53 -07:00
Gagan Bhullar
bcc19665ce feat(nodejs): expose offset (#1620)
PR closes #1555
2024-09-09 11:54:40 -07:00
Will Jones
2a6586d6fb feat: add flag to enable faster manifest paths (#1612)
The new V2 manifest path scheme makes discovering the latest version of
a table constant time on object stores, regardless of the number of
versions in the table. See benchmarks in the PR here:
https://github.com/lancedb/lance/pull/2798

Closes #1583
2024-09-09 11:34:36 -07:00
James Wu
029b01bbbf feat: enable phrase_query(bool) for hybrid search queries (#1578)
first off, apologies for any folly since i'm new to contributing to
lancedb. this PR is the continuation of [a discord
thread](https://discord.com/channels/1030247538198061086/1030247538667827251/1278844345713299599):

## user story

here's the lance db search query i'd like to run:

```
def search(phrase):
    logger.info(f'Searching for phrase: {phrase}')
    phrase_embedding = get_embedding(phrase)
    df = (table.search((phrase_embedding, phrase), query_type='hybrid')
        .limit(10).to_list())
    logger.info(f'Success search with row count: {len(df)}')

search('howdy (howdy)')
search('howdy(howdy)')
```

the second search fails due to `ValueError: Syntax Error: howdy(howdy)`

i saw on the
[docs](https://lancedb.github.io/lancedb/fts/#phrase-queries-vs-terms-queries)
that i can use `phrase_query()` to [enable a
flag](https://github.com/lancedb/lancedb/blob/main/python/python/lancedb/query.py#L790-L792)
to wrap the query in double quotes (as well as sanitize single quotes)
prior to sending the query to search. this works for [normal
FTS](https://lancedb.github.io/lancedb/fts/), but the command is
unavailable on [hybrid
search](https://lancedb.github.io/lancedb/hybrid_search/hybrid_search/).

## changes

i added `phrase_query()` function to `LanceHybridQueryBuilder` by
propagating the call down to its `self. _fts_query` object. i'm not too
familiar with the codebase and am not sure if this is the best way to
implement the functionality. feel free to riff on this PR or discard


## tests

```
(lancedb) JamesMPB:python james$ pwd
/Users/james/src/lancedb/python
(lancedb) JamesMPB:python james$ pytest python/tests/test_table.py 
python/tests/test_table.py .......................................                                                                   [100%]
====================================================== 39 passed, 1 warning in 2.23s =======================================================
```
2024-09-07 08:58:05 +05:30
Will Jones
cd32944e54 feat: upgrade lance to v0.17.0 (#1608)
Changelog: https://github.com/lancedb/lance/releases/tag/v0.17.0

Highlights:

* You can do "phrase queries" by adding double quotes around phrases
(multiple tokens) in FTS.

Added follow ups in: https://github.com/lancedb/lancedb/issues/1611
2024-09-06 14:10:02 -07:00
Jon X
7eb3b52297 docs: added a blank line between a paragraph and a list block (#1604)
Though the markdown can be rendered well on GitHub (GFM style?), but it
seems that it's required to insert a blank line between a paragraph and
a list block to make it render well with `mkdocs`?

see also the web page:
https://lancedb.github.io/lancedb/concepts/index_hnsw/
2024-09-06 09:38:19 +05:30
BubbleCal
8dcd328dce feat: support to create table from record batch iterator (#1593) 2024-09-06 10:41:38 +08:00
Philip Zeyliger
1d61717d0e docs: fix get_registry() usage (#1601)
Docs used `get_registry.get(...)` whereas what works is
`get_registry().get(...)`. Fixing the two instances I found. I tested
the open clip version by trying it locally in a Jupyter notebook.
2024-09-06 01:48:24 +05:30
Lei Xu
4ee7225e91 ci: public java package (#1485)
Co-authored-by: Lu Qiu <luqiujob@gmail.com>
2024-09-05 11:48:48 -07:00
Rithik Kumar
2bc7dca3ca docs: add changes to Embeddings-> Available models-> overview page (#1596)
adding features and improvements to - Manage Embeddings page

Before:
![Screenshot 2024-09-04
223743](https://github.com/user-attachments/assets/f1e116b5-6ebb-4d59-9d29-b20084998cd0)

After:



![Screenshot 2024-09-05
214214](https://github.com/user-attachments/assets/8c94318e-68af-447e-97e1-8153860a2914)

![Screenshot 2024-09-05
213623](https://github.com/user-attachments/assets/55c82770-6df9-4bab-9c5c-1ea1552138de)

![Screenshot 2024-09-05
215931](https://github.com/user-attachments/assets/9bfac7d4-16a6-454e-801e-50789ff75261)
2024-09-05 22:19:08 +05:30
Gagan Bhullar
b24810a011 feat(python, rust): expose offset in query (#1556)
PR is part of #1555
2024-09-05 08:33:07 -07:00
Jon X
2b8e872be0 docs: removed the unnecessary fence code tag (#1599) 2024-09-05 14:40:38 +05:30
Ayush Chaurasia
03ef1dc081 feat: update default reranker to RRF (#1580)
- Both LinearCombination (the current default) and RRF are pretty fast
compared to model based rerankers. RRF is slightly faster.
- In our tests RRF has also been slightly more accurate.

This PR:
- Makes RRF the default reranker
- Removed duplicate docs for rerankers
2024-09-03 14:00:13 +05:30
Rithik Kumar
fde636ca2e docs: fix links - quick start to embedding (#1591) 2024-09-02 21:55:35 +05:30
Ayush Chaurasia
51966a84f5 docs: add multi-vector reranking, answerdotai and studies section (#1579) 2024-08-31 04:09:14 +05:30
Rithik Kumar
38015ffa7c docs: improve overall language on all example pages (#1582)
Refine and improve the language clarity and quality across all example
pages in the documentation to ensure better understanding and
readability.

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-31 03:48:11 +05:30
Ayush Chaurasia
dc72ece847 feat!: better api for manual hybrid queries (#1575)
Currently, the only documented way of performing hybrid search is by
using embedding API and passing string queries that get automatically
embedded. There are use cases where users might like to pass vectors and
text manually instead.
This ticket contains more information and historical context -
https://github.com/lancedb/lancedb/issues/937

This breaks a undocumented pathway that allowed passing (vector, text)
tuple queries which was intended to be temporary, so this is marked as a
breaking change. For all practical purposes, this should not really
impact most users

### usage
```
results = table.search(query_type="hybrid")
                .vector(vector_query)
                .text(text_query)
                .limit(5)
                .to_pandas()
```
2024-08-30 17:37:58 +05:30
BubbleCal
1521435193 fix: specify column to search for FTS (#1572)
Before this we ignored the `fts_columns` parameter, and for now we
support to search on only one column, it could lead to an error if we
have multiple indexed columns for FTS

---------

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-29 23:43:46 +08:00
Ayush Chaurasia
bfe8fccfab docs: add hnsw docs (#1570) 2024-08-29 15:16:27 +05:30
Rithik Kumar
6f6eb170a9 docs: revamp Python example: Overview page and remove redundant examples and notebooks (#1574)
before:
![Screenshot 2024-08-29
131656](https://github.com/user-attachments/assets/81cb5d70-5dff-4e57-8bbe-3461327aed7d)

After:
![Screenshot 2024-08-29
131715](https://github.com/user-attachments/assets/62109a37-7f66-4fd4-90ed-906a85472117)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-29 13:48:10 +05:30
Rithik Kumar
dd1c16bbaf docs: fix links, convert backslash to forward slash in mkdocs.yml (#1571)
Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-28 16:07:57 +05:30
Gagan Bhullar
a76186ee83 fix(node): read consistency level fix (#1567)
PR fixes #1565
2024-08-27 17:03:42 -07:00
Rithik Kumar
ae85008714 docs: revamp embedding models (#1568)
before:
![Screenshot 2024-08-27
151525](https://github.com/user-attachments/assets/d4f8f2b9-37e6-4a31-b144-01b804019e11)

After:
![Screenshot 2024-08-27
151550](https://github.com/user-attachments/assets/79fe7d27-8f14-4d80-9b41-a1e91f8c708f)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-27 17:14:35 +05:30
Gagan Bhullar
a85f039352 fix(bug): limit fix (#1548)
PR fixes #1151
2024-08-26 14:25:14 -07:00
Bill Chambers
9c25998110 docs: update serverless_lancedb_with_s3_and_lambda.md (#1559) 2024-08-26 14:55:28 +05:30
Ayush Chaurasia
549ca51a8a feat: add answerdotai rerankers support and minor improvements (#1560)
This PR:
- Adds missing license headers
- Integrates with answerdotai Rerankers package
- Updates ColbertReranker to subclass answerdotai package. This is done
to keep backwards compatibility as some users might be used to importing
ColbertReranker directly
- Set `trust_remote_code` to ` True` by default in CrossEncoder and
sentence-transformer based rerankers
2024-08-26 13:25:10 +05:30
Rithik Kumar
632007d0e2 docs: add recommender system example (#1561)
before:
![Screenshot 2024-08-24
230216](https://github.com/user-attachments/assets/cc8a810a-b032-45d7-b086-b2ef0720dc16)

After:
![Screenshot 2024-08-24
230228](https://github.com/user-attachments/assets/eaa1dc31-ac7f-4b81-aa79-b4cf94f0cbd5)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-25 12:30:30 +05:30
Lance Release
02d85a4ea4 Updating package-lock.json 2024-08-23 13:56:54 +00:00
Lance Release
a9d0625e2b Bump version: 0.10.0-beta.0 → 0.10.0-beta.1 2024-08-23 13:56:34 +00:00
Lance Release
89bcc1b2e7 Bump version: 0.13.0-beta.0 → 0.13.0-beta.1 2024-08-23 13:56:30 +00:00
rahuljo
6ad5553eca docs: add dlt-lancedb integration page (#1551)
Co-authored-by: Akela Drissner-Schmid <32450038+akelad@users.noreply.github.com>
2024-08-22 15:18:49 +05:30
Gagan Bhullar
6eb7ccfdee fix: rerank attribute unknown (#1554)
PR fixes #1550
2024-08-22 11:46:36 +05:30
Rithik Kumar
758c82858f docs: add AI agent example (#1553)
before:
![Screenshot 2024-08-21
225014](https://github.com/user-attachments/assets/e5b05586-87c5-4739-a4df-2d6cd0704ba5)

After:
![Screenshot 2024-08-21
225029](https://github.com/user-attachments/assets/504959db-f560-49b2-9492-557e9846a793)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-22 00:54:05 +05:30
Rithik Kumar
0cbc9cd551 docs: add evaluation example (#1552)
before:
![Screenshot 2024-08-21
194228](https://github.com/user-attachments/assets/68d96658-7579-4934-85af-e8c898b64660)

After:
![Screenshot 2024-08-21
195258](https://github.com/user-attachments/assets/81ddb9cd-cb93-47fc-a121-ff82701fd11f)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-21 20:37:04 +05:30
Ayush Chaurasia
7d65dd97cf chore(python): update Colbert architecture and minor improvements (#1547)
- Update ColBertReranker architecture: The current implementation
doesn't use the right arch. This PR uses the implementation in Rerankers
library. Fixes https://github.com/lancedb/lancedb/issues/1546
Benchmark diff (hit rate):
Hybrid - 91 vs 87
reranked vector - 85 vs 80

- Reranking in FTS is basically disabled in main after last week's FTS
updates. I think there's no blocker in supporting that?
- Allow overriding accelerators: Most transformer based Rerankers and
Embedding automatically select device. This PR allows overriding those
settings by passing `device`. Fixes:
https://github.com/lancedb/lancedb/issues/1487

---------

Co-authored-by: BubbleCal <bubble-cal@outlook.com>
2024-08-21 12:26:52 +05:30
Ayush Chaurasia
85bb7e54e4 docs: missing griffe dependency for mkdocs deployment (#1545) 2024-08-19 07:48:23 +05:30
Rithik Kumar
21014cab45 docs: add chatbot example and improve quality of other examples (#1544) 2024-08-17 12:35:33 +05:30
Lei Xu
5857cb4c6e docs: add a section to describe scalar index (#1495) 2024-08-16 18:48:29 -07:00
Rithik Kumar
09ce6c5bb5 docs: add vector search example (#1543) 2024-08-16 21:30:45 +05:30
BubbleCal
0fa50775d6 feat: support to query/index FTS on RemoteTable/AsyncTable (#1537)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-16 12:01:05 +08:00
Gagan Bhullar
20faa4424b feat(python): add delete unverified parameter (#1542)
PR fixes #1527
2024-08-15 09:01:32 -07:00
BubbleCal
b624fc59eb docs: add create_fts_index doc in Python API Reference (#1533)
resolve #1313

---------

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-15 11:35:16 +08:00
Gagan Bhullar
d2caa5e202 feat(nodejs): add delete unverified (#1530)
PR fixes part of #1527
2024-08-14 08:53:53 -07:00
BubbleCal
501817cfac chore: bump the required python version to 3.9 (#1541)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-14 08:44:31 -07:00
Ryan Green
b3daa25f46 feat: allow new scalar index types to be created in remote table (#1538) 2024-08-13 16:05:42 -02:30
Matt Basta
6008a8257b fix: remove native.d.ts from .npmignore (#1531)
This removes the type definitions for a number of important TypeScript
interfaces from `.npmignore` so that the package is not incorrectly
typed `any` in a number of places.

---

Presently the `opts` argument to `lancedb.connect` is typed `any`, even
though it shouldn't be.

<img width="560" alt="image"
src="https://github.com/user-attachments/assets/5c974ce8-5a59-44a1-935d-cbb808f0ea24">

Clicking into the type definitions for the published package, it has the
correct type signature:

<img width="831" alt="image"
src="https://github.com/user-attachments/assets/6e39a519-13ff-4ca8-95ae-85538ac59d5d">

However, `ConnectionOptions` is imported from `native.js` (along with a
number of other imports a bit further down):

<img width="384" alt="image"
src="https://github.com/user-attachments/assets/10c1b055-ae78-4088-922e-2816af64c23c">

This is not otherwise an issue, except that the type definitions for
`native.js` are not included in the published package:

<img width="217" alt="image"
src="https://github.com/user-attachments/assets/f15cd3b6-a8de-4011-9fa2-391858da20ec">

I haven't compiled the Rust code and run the build script, but I
strongly suspect that disincluding the type definitions in `.npmignore`
is ultimately the root cause here.
2024-08-13 10:06:15 -07:00
Lance Release
aaff43d304 Updating package-lock.json 2024-08-12 19:48:18 +00:00
Lance Release
d4c3a8ca87 Bump version: 0.9.0 → 0.10.0-beta.0 2024-08-12 19:48:02 +00:00
Lance Release
ff5bbfdd4c Bump version: 0.12.0 → 0.13.0-beta.0 2024-08-12 19:47:57 +00:00
Lei Xu
694ca30c7c feat(nodejs): add bitmap and label list index types in nodejs (#1532) 2024-08-11 12:06:02 -07:00
Lei Xu
b2317c904d feat: create bitmap and label list scalar index using python async api (#1529)
* Expose `bitmap` and `LabelList` scalar index type via Rust and Async
Python API
* Add documents
2024-08-11 09:16:11 -07:00
BubbleCal
613f3063b9 chore: upgrade lance to 0.16.1 (#1524)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-09 19:18:05 +08:00
BubbleCal
5d2cd7fb2e chore: upgrade object_store to 0.10.2 (#1523)
To use the same version with lance

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-09 12:03:46 +08:00
Ayush Chaurasia
a88e9bb134 docs: add lancedb embedding fcn on cloud docs (#1521) 2024-08-09 07:21:04 +05:30
Gagan Bhullar
9c1adff426 feat(python): add to_list to async api (#1520)
PR fixes #1517
2024-08-08 11:45:20 -07:00
BubbleCal
f9d5fa88a1 feat!: migrate FTS from tantivy to lance-index (#1483)
Lance now supports FTS, so add it into lancedb Python, TypeScript and
Rust SDKs.

For Python, we still use tantivy based FTS by default because the lance
FTS index now misses some features of tantivy.

For Python:
- Support to create lance based FTS index
- Support to specify columns for full text search (only available for
lance based FTS index)

For TypeScript:
- Change the search method so that it can accept both string and vector
- Support full text search

For Rust
- Support full text search

The others:
- Update the FTS doc

BREAKING CHANGE: 
- for Python, this renames the attached score column of FTS from "score"
to "_score", this could be a breaking change for users that rely the
scores

---------

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-08-08 15:33:15 +08:00
Lance Release
4db554eea5 Updating package-lock.json 2024-08-07 20:56:12 +00:00
Lance Release
101066788d Bump version: 0.9.0-beta.0 → 0.9.0 2024-08-07 20:55:53 +00:00
Lance Release
c4135d9d30 Bump version: 0.8.0 → 0.9.0-beta.0 2024-08-07 20:55:52 +00:00
Lance Release
ec39d98571 Bump version: 0.12.0-beta.0 → 0.12.0 2024-08-07 20:55:40 +00:00
Lance Release
0cb37f0e5e Bump version: 0.11.0 → 0.12.0-beta.0 2024-08-07 20:55:39 +00:00
Gagan Bhullar
24e3507ee2 fix(node): export optimize options (#1518)
PR fixes #1514
2024-08-07 13:15:51 -07:00
Lei Xu
2bdf0a02f9 feat!: upgrade lance to 0.16 (#1519) 2024-08-07 13:15:22 -07:00
Gagan Bhullar
32123713fd feat(python): optimize stats repr method (#1510)
PR fixes #1507
2024-08-07 08:47:52 -07:00
Gagan Bhullar
d5a01ffe7b feat(python): index config repr method (#1509)
PR fixes #1506
2024-08-07 08:46:46 -07:00
Ayush Chaurasia
e01045692c feat(python): support embedding functions in remote table (#1405) 2024-08-07 20:22:43 +05:30
Rithik Kumar
a62f661d90 docs: revamp example docs (#1512)
Before: 
![Screenshot 2024-08-07
015834](https://github.com/user-attachments/assets/b817f846-78b3-4d6f-b4a0-dfa3f4d6be87)

After:
![Screenshot 2024-08-07
015852](https://github.com/user-attachments/assets/53370301-8c40-45f8-abe3-32f9d051597e)
![Screenshot 2024-08-07
015934](https://github.com/user-attachments/assets/63cdd038-32bb-4b3e-b9c4-1389d2754014)
![Screenshot 2024-08-07
015941](https://github.com/user-attachments/assets/70388680-9c2b-49ef-ba00-2bb015988214)
![Screenshot 2024-08-07
015949](https://github.com/user-attachments/assets/76335a33-bb6f-473c-896f-447320abcc25)

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-08-07 03:56:59 +05:30
Ayush Chaurasia
4769d8eb76 feat(python): multi-vector reranking support (#1481)
Currently targeting the following usage:
```
from lancedb.rerankers import CrossEncoderReranker

reranker = CrossEncoderReranker()

query = "hello"

res1 = table.search(query, vector_column_name="vector").limit(3)
res2 = table.search(query, vector_column_name="text_vector").limit(3)
res3 = table.search(query, vector_column_name="meta_vector").limit(3)

reranked = reranker.rerank_multivector(
               [res1, res2, res3],  
              deduplicate=True,
              query=query # some reranker models need query
)
```
- This implements rerank_multivector function in the base reranker so
that all rerankers that implement rerank_vector will automatically have
multivector reranking support
- Special case for RRF reranker that just uses its existing
rerank_hybrid fcn to multi-vector reranking.

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-08-07 01:45:46 +05:30
Ayush Chaurasia
d07d7a5980 chore: update polars version range (#1508) 2024-08-06 23:43:15 +05:30
Robby
8d2ff7b210 feat(python): add watsonx embeddings to registry (#1486)
Related issue: https://github.com/lancedb/lancedb/issues/1412

---------

Co-authored-by: Robby <h0rv@users.noreply.github.com>
2024-08-06 10:58:33 +05:30
Will Jones
61c05b51a0 fix(nodejs): address import issues in lancedb npm module (#1503)
Fixes [#1496](https://github.com/lancedb/lancedb/issues/1496)
2024-08-05 16:30:27 -07:00
Will Jones
7801ab9b8b ci: fix release by upgrading to Node 18 (#1494)
Building with Node 16 produced this error:

```
npm ERR! code ENOENT
npm ERR! syscall chmod
npm ERR! path /io/nodejs/node_modules/apache-arrow-15/bin/arrow2csv.cjs
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, chmod '/io/nodejs/node_modules/apache-arrow-15/bin/arrow2csv.cjs'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 
```

[CI
Failure](https://github.com/lancedb/lancedb/actions/runs/10117131772/job/27981475770).
This looks like it is https://github.com/apache/arrow/issues/43341

Upgrading to Node 18 makes this goes away. Since Node 18 requires glibc
>= 2_28, we had to upgrade the manylinux version we are using. This is
fine since we already state a minimum Node version of 18.

This also upgrades the openssl version we bundle, as well as
consolidates the build files.
2024-08-05 14:08:42 -07:00
Rithik Kumar
d297da5a7e docs: update examples docs (#1488)
Testing Workflow with my first PR.
Before:
![Screenshot 2024-08-01
183326](https://github.com/user-attachments/assets/83d22101-8bbf-4b18-81e4-f740e605727a)

After:
![Screenshot 2024-08-01
183333](https://github.com/user-attachments/assets/a5e4cd2c-c524-4009-81d5-75b2b0361f83)
2024-08-01 18:54:45 +05:30
Ryan Green
6af69b57ad fix: return LanceMergeInsertBuilder in overridden merge_insert method on remote table (#1484) 2024-07-31 12:25:16 -02:30
Cory Grinstead
a062a92f6b docs: custom embedding function for ts (#1479) 2024-07-30 18:19:55 -05:00
Gagan Bhullar
277b753fd8 fix: run java stages in parallel (#1472)
This PR is for issue - https://github.com/lancedb/lancedb/issues/1331
2024-07-27 12:04:32 -07:00
Lance Release
f78b7863f6 Updating package-lock.json 2024-07-26 20:18:55 +00:00
Lance Release
e7d824af2b Bump version: 0.8.0-beta.0 → 0.8.0 2024-07-26 20:18:37 +00:00
Lance Release
02f1ec775f Bump version: 0.7.2 → 0.8.0-beta.0 2024-07-26 20:18:36 +00:00
Lance Release
7b6d3f943b Bump version: 0.11.0-beta.0 → 0.11.0 2024-07-26 20:18:31 +00:00
Lance Release
676876f4d5 Bump version: 0.10.2 → 0.11.0-beta.0 2024-07-26 20:18:30 +00:00
Cory Grinstead
fbfe2444a8 feat(nodejs): huggingface compatible transformers (#1462) 2024-07-26 12:54:15 -07:00
Will Jones
9555efacf9 feat: upgrade lance to 0.15.0 (#1477)
Changelog: https://github.com/lancedb/lance/releases/tag/v0.15.0

* Fixes #1466
* Closes #1475
* Fixes #1446
2024-07-26 09:13:49 -07:00
Ayush Chaurasia
513926960d docs: add rrf docs and update reranking notebook with Jina reranker results (#1474)
- RRF reranker
- Jina Reranker results

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-07-25 22:29:46 +05:30
inn-0
cc507ca766 docs: add missing whitespace before markdown table to fix rendering issue (#1471)
### Fix markdown table rendering issue

This PR adds a missing whitespace before a markdown table in the
documentation. This issue causes the table to not render properly in
mkdocs, while it does render properly in GitHub's markdown viewer.

#### Change Details:
- Added a single line of whitespace before the markdown table to ensure
proper rendering in mkdocs.

#### Note:
- I wasn't able to test this fix in the mkdocs environment, but it
should be safe as it only involves adding whitespace which won't break
anything.


---


Cohere supports following input types:

| Input Type               | Description                          |
|-------------------------|---------------------------------------|
| "`search_document`"     | Used for embeddings stored in a vector|
|                         | database for search use-cases.        |
| "`search_query`"        | Used for embeddings of search queries |
|                         | run against a vector DB               |
| "`semantic_similarity`" | Specifies the given text will be used |
|                         | for Semantic Textual Similarity (STS) |
| "`classification`"      | Used for embeddings passed through a  |
|                         | text classifier.                      |
| "`clustering`"          | Used for the embeddings run through a |
|                         | clustering algorithm                  |

Usage Example:
2024-07-24 22:26:28 +05:30
Cory Grinstead
492d0328fe chore: update readme to point to lancedb package (#1470) 2024-07-23 13:46:32 -07:00
Chang She
374c1e7aba fix: infer schema from huggingface dataset (#1444)
Closes #1383

When creating a table from a HuggingFace dataset, infer the arrow schema
directly
2024-07-23 13:12:34 -07:00
Gagan Bhullar
30047a5566 fix: remove source .ts code from published npm package (#1467)
This PR is for issue - https://github.com/lancedb/lancedb/issues/1358
2024-07-23 13:11:54 -07:00
Bert
85ccf9e22b feat!: correct timeout argument lancedb nodejs sdk (#1468)
Correct the timeout argument to `connect` in @lancedb/lancedb node SDK.
`RemoteConnectionOptions` specified two fields `connectionTimeout` and
`readTimeout`, probably to be consistent with the python SDK, but only
`connectionTimeout` was being used and it was passed to axios in such a
way that this covered the enture remote request (connect + read). This
change adds a single parameter `timeout` which makes the args to
`connect` consistent with the legacy vectordb sdk.

BREAKING CHANGE: This is a breaking change b/c users who would have
previously been passing `connectionTimeout` will now be expected to pass
`timeout`.
2024-07-23 14:02:46 -03:00
Ayush Chaurasia
0255221086 feat: add reciprocal rank fusion reranker (#1456)
Implements https://plg.uwaterloo.ca/~gvcormac/cormacksigir09-rrf.pdf

Refactors the hybrid search only rerrankers test to avoid repetition.
2024-07-23 21:37:17 +05:30
Lance Release
4ee229490c Updating package-lock.json 2024-07-23 13:49:13 +00:00
Lance Release
93e24f23af Bump version: 0.7.2-beta.0 → 0.7.2 2024-07-23 13:48:58 +00:00
Lance Release
8f141e1e33 Bump version: 0.7.1 → 0.7.2-beta.0 2024-07-23 13:48:58 +00:00
Lance Release
1d5da1d069 Bump version: 0.10.2-beta.0 → 0.10.2 2024-07-23 13:48:48 +00:00
Lance Release
0c0ec1c404 Bump version: 0.10.1 → 0.10.2-beta.0 2024-07-23 13:48:47 +00:00
Weston Pace
d4aad82aec fix: don't use v2 by default on empty table (#1469) 2024-07-23 06:47:49 -07:00
Will Jones
4f601a2d4c fix: handle camelCase column names in select (#1460)
Fixes #1385
2024-07-22 12:53:17 -07:00
Cory Grinstead
391fa26175 feat(rust): huggingface sentence-transformers (#1447)
Co-authored-by: Will Jones <willjones127@gmail.com>
2024-07-22 13:47:57 -05:00
Lei Xu
c9c61eb060 docs: expose merge_insert doc for remote python SDK (#1464)
`merge_insert` API is not shown up on
[`RemoteTable`](https://lancedb.github.io/lancedb/python/saas-python/#lancedb.remote.table.RemoteTable)
today

* Also bump `ruff` version as well
2024-07-22 10:48:16 -07:00
Cory Grinstead
69295548cc docs: minor updates for js migration guides (#1451)
Co-authored-by: Will Jones <willjones127@gmail.com>
2024-07-22 10:26:49 -07:00
Cory Grinstead
2276b114c5 docs: add installation note about yarn (#1459)
I noticed that setting up a simple project with
[Yarn](https://yarnpkg.com/) failed because unlike others [npm, pnpm,
bun], yarn does not automatically resolve peer dependencies, so i added
a quick note about it in the installation guide.
2024-07-19 18:48:24 -05:00
Cory Grinstead
3b88f15774 fix(nodejs): lancedb arrow dependency (#1458)
previously if you tried to install both vectordb and @lancedb/lancedb,
you would get a peer dependency issue due to `vectordb` requiring
`14.0.2` and `@lancedb/lancedb` requiring `15.0.0`. now
`@lancedb/lancedb` should just work with any arrow version 13-17
2024-07-19 11:21:55 -05:00
Ayush Chaurasia
ed7bd45c17 chore: choose appropriate args for concat_table based on pyarrow version & refactor reranker tests (#1455) 2024-07-18 21:04:59 +05:30
Magnus
dc609a337d fix: added support for trust_remote_code (#1454)
Closes #1285 

Added trust_remote_code to the SentenceTransformerEmbeddings class.
Defaults to `False`
2024-07-18 19:37:52 +05:30
Will Jones
d564f6eacb ci: fix vectordb release process (#1450)
* Labelled jobs `vectordb` and `lancedb` so it's clear which package
they are for
* Fix permission issue in aarch64 Linux `vectordb` build that has been
blocking release for two months.
* Added Slack notifications for failure of these publish jobs.
2024-07-17 11:17:33 -07:00
Lance Release
ed5d1fb557 Updating package-lock.json 2024-07-17 14:04:56 +00:00
Lance Release
85046a1156 Bump version: 0.7.1-beta.0 → 0.7.1 2024-07-17 14:04:45 +00:00
Lance Release
b67689e1be Bump version: 0.7.0 → 0.7.1-beta.0 2024-07-17 14:04:45 +00:00
Lance Release
2c36767f20 Bump version: 0.10.1-beta.0 → 0.10.1 2024-07-17 14:04:40 +00:00
Lance Release
1fa7e96aa1 Bump version: 0.10.0 → 0.10.1-beta.0 2024-07-17 14:04:39 +00:00
Cory Grinstead
7ae327242b docs: update migration.md (#1445) 2024-07-15 18:20:23 -05:00
Bert
1f4a051070 feat: make timeout configurable for vectordb node SDK (#1443) 2024-07-15 13:23:13 -02:30
Lance Release
92c93b08bf Updating package-lock.json 2024-07-13 08:56:11 +00:00
Lance Release
a363b02ca7 Bump version: 0.7.0-beta.0 → 0.7.0 2024-07-13 08:55:44 +00:00
Lance Release
ff8eaab894 Bump version: 0.6.0 → 0.7.0-beta.0 2024-07-13 08:55:44 +00:00
Lance Release
11959cc5d6 Bump version: 0.10.0-beta.0 → 0.10.0 2024-07-13 08:55:22 +00:00
Lance Release
7c65cec8d7 Bump version: 0.9.0 → 0.10.0-beta.0 2024-07-13 08:55:22 +00:00
Adam Azzam
82621d5b13 chore: typing for lance.connect (#1441)
Feel free to close if this is a distraction, but untyped keywords in
lance.connect is throwing pylance errors in strict mode.

<img width="683" alt="Screenshot 2024-07-11 at 1 21 04 PM"
src="https://github.com/lancedb/lancedb/assets/33043305/fe6cd4d9-4e59-413d-87f2-aabb9ff84cc4">
2024-07-12 10:39:28 -07:00
Lei Xu
0708428357 feat: support update over binary field (#1440) 2024-07-12 09:22:00 -07:00
BubbleCal
137d86d3c5 chore: bump lance to 0.14.1 (#1442)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-07-12 21:41:59 +08:00
Ayush Chaurasia
bb2e624ff0 docs: add fine tuning section in retriever guide and minor fixes (#1438) 2024-07-11 17:34:29 +05:30
Cory Grinstead
fdc949bafb feat(nodejs): update({values | valuesSql}) (#1439) 2024-07-10 14:09:39 -05:00
Cory Grinstead
31be9212da docs(nodejs): add @lancedb/lancedb examples everywhere (#1411)
Co-authored-by: Will Jones <willjones127@gmail.com>
2024-07-10 13:29:03 -05:00
Joan Fontanals
cef24801f4 docs: add jina reranker to index (#1427)
PR to add JinaReranker documentation page to the rerankers index
2024-07-09 14:39:35 +05:30
forrestmckee
b4436e0804 refactor: update type hint and remove unused import (#1436)
change typehint on `_invert_score` from `List[float]` to `float`. remove
unnecessary typing import
2024-07-09 13:56:45 +05:30
Lei Xu
58c2cd01a5 docs: add fast search to openapi.yml (#1435) 2024-07-08 11:55:45 -07:00
Cory Grinstead
a1a1891c0c fix(nodejs): explain plan (#1434) 2024-07-08 13:07:24 -05:00
Lei Xu
3c6c21c137 feat(rust): enable fast search flag in rust (#1432) 2024-07-07 09:46:41 -07:00
Lei Xu
fd5ca20f34 chore: bump lance to 0.14 (#1430) 2024-07-06 14:10:42 -07:00
Lei Xu
ef30f87fd1 chore: propagate error for table index stats (#1426) 2024-07-04 14:53:49 -07:00
Joan Fontanals
08d25c5a80 feat: add Jina integration in Python for Embedding and Reranker (#1424)
Integration of Jina Embeddings and Rerankers through its API
2024-07-05 01:34:43 +05:30
Raghav Dixit
a5ff623443 docs: update lntegration docs & fixed links (#1423)
1. Updated langchain docs. 
2. Minor update to llamaindex doc.
3. Added notebook examples and linked them correctly
2024-07-03 21:50:33 +05:30
Cory Grinstead
b8ccea9f71 feat(nodejs): make tbl.search chainable (#1421)
so this was annoying me when writing the docs. 

for a `search` query, one needed to chain `async` calls.

```ts
const res = await (await tbl.search("greetings")).toArray()
```

now the promise will be deferred until the query is collected, leading
to a more functional API

```ts
const res = await tbl.search("greetings").toArray()
```
2024-07-02 14:31:57 -05:00
Nuvic
46c6ff889d feat: add the explain_plan function (#1328)
It's useful to see the underlying query plan for debugging purposes.
This exposes LanceScanner's `explain_plan` function. Addresses #1288

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-07-02 11:10:01 -07:00
BubbleCal
12b3c87964 feat: support to create more vector index types (#1407)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-07-02 10:53:03 -02:30
Lei Xu
020a437230 docs: add merge insert, create index and create scalar index to public rest api doc (#1420)
Added 3 APIs doc publicly:
- `merge_insert`
- `create_index`
- `create_scalar_index`

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-07-01 12:52:27 -07:00
Cory Grinstead
34f1aeb84c chore(nodejs): make opean optional, and apache-arrow a peer dep (#1417)
fyi, this should have no breaking changes as npm is opt-out instead of
opt-in when resolving dependencies

all peer and optional dependencies get installed by default, so users
need to manually opt out.

`npm i --omit optional --omit peer`
2024-07-01 12:50:01 -05:00
Cory Grinstead
5c3a88b6b2 feat(nodejs): add better typehints for registry (#1408)
previously the `registry` would return `undefined | EmbeddingFunction`
even for built in functions such as "openai"

now it'll return the correct type for `getRegistry().get("openai")

as well as pass in the correct options type to `create`

### before
```ts
const options: {model: 'not-a-real-model'}
// this'd compile just fine, but result in runtime error
const openai: EmbeddingFunction | undefined = getRegistry().get("openai").create(options)
// this'd also compile fine
const openai: EmbeddingFunction | undefined = getRegistry().get("openai").create({MODEL: ''})
```
### after
```ts
const options: {model: 'not-a-real-model'}

const openai: OpenAIEmbeddingFunction = getRegistry().get("openai").create(options)
// Type '"not-a-real-model"' is not assignable to type '"text-embedding-ada-002" | "text-embedding-3-large" | "text-embedding-3-small" | undefined'


```
2024-07-01 12:49:42 -05:00
Lei Xu
e780b2f51c ci: fix nodejs doc test (#1419)
Fixed nodejs doctest failures due to compiling JNI node.
2024-07-01 10:21:41 -07:00
Cory Grinstead
b8a1719174 feat(nodejs): catch unwinds in node bindings (#1414)
this bumps napi version to 2.16 which contains a few bug fixes.
Additionally, it adds `catch_unwind` to any method that may
unintentionally panic.

`catch_unwind` will unwind the panics and return a regular JS error
instead of panicking.
2024-07-01 09:28:10 -05:00
Ayush Chaurasia
ccded130ed docs: add reranking example (#1416) 2024-07-01 19:42:38 +05:30
Sidharth Rajaram
48f8d1b3b7 docs: addresses typos in HF embedding example docs (#1415)
* `table.add` requires `data` parameter on the docs page regarding use
of embedding models from HF
* also changed the name of example class from `TextModel` to `Words`
since that is what is used as parameter in the `db.create_table` call
* Per
https://lancedb.github.io/lancedb/python/python/#lancedb.table.Table.add
2024-07-01 12:14:17 +05:30
Will Jones
865ed99881 feat: dynamodb commit store support (#1410)
This allows users to specify URIs like:

```
s3+ddb://my_bucket/path?ddbTableName=myCommitTable
```

and it will support concurrent writes in S3.

* [x] Add dynamodb integration tests
* [x] Add modifications to get it working in Python sync API
* [x] Added section in documentation describing how to configure.

Closes #534

---------

Co-authored-by: universalmind303 <cory.grinstead@gmail.com>
2024-06-28 09:30:36 -07:00
Lei Xu
d6485f1215 docs: add openapi rest api page (#1413) 2024-06-27 21:32:34 -07:00
Cory Grinstead
79a1667753 feat(nodejs): feature parity [6/N] - make public interface work with multiple arrow versions (#1392)
previously we didnt have great compatibility with other versions of
apache arrow. This should bridge that gap a bit.


depends on https://github.com/lancedb/lancedb/pull/1391
see actual diff here
https://github.com/universalmind303/lancedb/compare/query-filter...universalmind303:arrow-compatibility
2024-06-25 11:10:08 -05:00
Thomas J. Fan
a866b78a31 docs: fixes polars formatting in docs (#1400)
Currently, the whole polars section is formatted as a code block:
https://lancedb.github.io/lancedb/guides/tables/#from-a-polars-dataframe

This PR fixes the formatting.
2024-06-25 08:46:16 -07:00
Will Jones
c7d37b3e6e docs: add tip about lzma linking (#1397)
Similar to https://github.com/lancedb/lance/pull/2505
2024-06-25 08:20:31 -07:00
Lance Release
4b71552b73 Updating package-lock.json 2024-06-25 00:26:08 +00:00
Lance Release
5ce5f64da3 Bump version: 0.6.0-beta.0 → 0.6.0 2024-06-25 00:25:45 +00:00
Lance Release
c582b0fc63 Bump version: 0.5.2 → 0.6.0-beta.0 2024-06-25 00:25:45 +00:00
266 changed files with 21914 additions and 7145 deletions

View File

@@ -1,5 +1,5 @@
[tool.bumpversion]
current_version = "0.5.2"
current_version = "0.10.0-beta.1"
parse = """(?x)
(?P<major>0|[1-9]\\d*)\\.
(?P<minor>0|[1-9]\\d*)\\.

View File

@@ -24,15 +24,19 @@ env:
jobs:
test-python:
name: Test doc python code
runs-on: "buildjet-8vcpu-ubuntu-2204"
runs-on: "warp-ubuntu-latest-x64-4x"
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Print CPU capabilities
run: cat /proc/cpuinfo
- name: Install protobuf
run: |
sudo apt update
sudo apt install -y protobuf-compiler
- name: Install dependecies needed for ubuntu
run: |
sudo apt install -y protobuf-compiler libssl-dev
sudo apt install -y libssl-dev
rustup update && rustup default
- name: Set up Python
uses: actions/setup-python@v5
@@ -56,7 +60,7 @@ jobs:
for d in *; do cd "$d"; echo "$d".py; python "$d".py; cd ..; done
test-node:
name: Test doc nodejs code
runs-on: "buildjet-8vcpu-ubuntu-2204"
runs-on: "warp-ubuntu-latest-x64-4x"
timeout-minutes: 60
strategy:
fail-fast: false
@@ -72,9 +76,13 @@ jobs:
uses: actions/setup-node@v4
with:
node-version: 20
- name: Install protobuf
run: |
sudo apt update
sudo apt install -y protobuf-compiler
- name: Install dependecies needed for ubuntu
run: |
sudo apt install -y protobuf-compiler libssl-dev
sudo apt install -y libssl-dev
rustup update && rustup default
- name: Rust cache
uses: swatinem/rust-cache@v2

109
.github/workflows/java-publish.yml vendored Normal file
View File

@@ -0,0 +1,109 @@
name: Build and publish Java packages
on:
release:
types: [released]
pull_request:
paths:
- .github/workflows/java-publish.yml
jobs:
macos-arm64:
name: Build on MacOS Arm64
runs-on: macos-14
timeout-minutes: 45
defaults:
run:
working-directory: ./java/core/lancedb-jni
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
- name: Install dependencies
run: |
brew install protobuf
- name: Build release
run: |
cargo build --release
- uses: actions/upload-artifact@v4
with:
name: liblancedb_jni_darwin_aarch64.zip
path: target/release/liblancedb_jni.dylib
retention-days: 1
if-no-files-found: error
linux-arm64:
name: Build on Linux Arm64
runs-on: warp-ubuntu-2204-arm64-8x
timeout-minutes: 45
defaults:
run:
working-directory: ./java/core/lancedb-jni
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
- uses: actions-rust-lang/setup-rust-toolchain@v1
with:
toolchain: "1.79.0"
cache-workspaces: "./java/core/lancedb-jni"
# Disable full debug symbol generation to speed up CI build and keep memory down
# "1" means line tables only, which is useful for panic tracebacks.
rustflags: "-C debuginfo=1"
- name: Install dependencies
run: |
sudo apt -y -qq update
sudo apt install -y protobuf-compiler libssl-dev pkg-config
- name: Build release
run: |
cargo build --release
- uses: actions/upload-artifact@v4
with:
name: liblancedb_jni_linux_aarch64.zip
path: target/release/liblancedb_jni.so
retention-days: 1
if-no-files-found: error
linux-x86:
runs-on: warp-ubuntu-2204-x64-8x
timeout-minutes: 30
needs: [macos-arm64, linux-arm64]
defaults:
run:
working-directory: ./java
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
- name: Set up Java 8
uses: actions/setup-java@v4
with:
distribution: temurin
java-version: 8
cache: "maven"
server-id: ossrh
server-username: SONATYPE_USER
server-password: SONATYPE_TOKEN
gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
gpg-passphrase: ${{ secrets.GPG_PASSPHRASE }}
- name: Install dependencies
run: |
sudo apt -y -qq update
sudo apt install -y protobuf-compiler libssl-dev pkg-config
- name: Download artifact
uses: actions/download-artifact@v4
- name: Copy native libs
run: |
mkdir -p ./core/target/classes/nativelib/darwin-aarch64 ./core/target/classes/nativelib/linux-aarch64
cp ../liblancedb_jni_darwin_aarch64.zip/liblancedb_jni.dylib ./core/target/classes/nativelib/darwin-aarch64/liblancedb_jni.dylib
cp ../liblancedb_jni_linux_aarch64.zip/liblancedb_jni.so ./core/target/classes/nativelib/linux-aarch64/liblancedb_jni.so
- name: Set github
run: |
git config --global user.email "LanceDB Github Runner"
git config --global user.name "dev+gha@lancedb.com"
- name: Publish with Java 8
run: |
echo "use-agent" >> ~/.gnupg/gpg.conf
echo "pinentry-mode loopback" >> ~/.gnupg/gpg.conf
export GPG_TTY=$(tty)
mvn --batch-mode -DskipTests -DpushChanges=false -Dgpg.passphrase=${{ secrets.GPG_PASSPHRASE }} deploy -P deploy-to-ossrh
env:
SONATYPE_USER: ${{ secrets.SONATYPE_USER }}
SONATYPE_TOKEN: ${{ secrets.SONATYPE_TOKEN }}

View File

@@ -3,6 +3,8 @@ on:
push:
branches:
- main
paths:
- java/**
pull_request:
paths:
- java/**
@@ -21,9 +23,42 @@ env:
CARGO_INCREMENTAL: "0"
CARGO_BUILD_JOBS: "1"
jobs:
linux-build:
linux-build-java-11:
runs-on: ubuntu-22.04
name: ubuntu-22.04 + Java 11 & 17
name: ubuntu-22.04 + Java 11
defaults:
run:
working-directory: ./java
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
with:
workspaces: java/core/lancedb-jni
- name: Run cargo fmt
run: cargo fmt --check
working-directory: ./java/core/lancedb-jni
- name: Install dependencies
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Install Java 11
uses: actions/setup-java@v4
with:
distribution: temurin
java-version: 11
cache: "maven"
- name: Java Style Check
run: mvn checkstyle:check
# Disable because of issues in lancedb rust core code
# - name: Rust Clippy
# working-directory: java/core/lancedb-jni
# run: cargo clippy --all-targets -- -D warnings
- name: Running tests with Java 11
run: mvn clean test
linux-build-java-17:
runs-on: ubuntu-22.04
name: ubuntu-22.04 + Java 17
defaults:
run:
working-directory: ./java
@@ -47,20 +82,12 @@ jobs:
java-version: 17
cache: "maven"
- run: echo "JAVA_17=$JAVA_HOME" >> $GITHUB_ENV
- name: Install Java 11
uses: actions/setup-java@v4
with:
distribution: temurin
java-version: 11
cache: "maven"
- name: Java Style Check
run: mvn checkstyle:check
# Disable because of issues in lancedb rust core code
# - name: Rust Clippy
# working-directory: java/core/lancedb-jni
# run: cargo clippy --all-targets -- -D warnings
- name: Running tests with Java 11
run: mvn clean test
- name: Running tests with Java 17
run: |
export JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS \
@@ -83,3 +110,4 @@ jobs:
-Djdk.reflect.useDirectMethodHandle=false \
-Dio.netty.tryReflectionSetAccessible=true"
JAVA_HOME=$JAVA_17 mvn clean test

View File

@@ -7,6 +7,7 @@ on:
jobs:
node:
name: vectordb Typescript
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -39,6 +40,7 @@ jobs:
node/vectordb-*.tgz
node-macos:
name: vectordb ${{ matrix.config.arch }}
strategy:
matrix:
config:
@@ -69,6 +71,7 @@ jobs:
node/dist/lancedb-vectordb-darwin*.tgz
nodejs-macos:
name: lancedb ${{ matrix.config.arch }}
strategy:
matrix:
config:
@@ -99,7 +102,7 @@ jobs:
nodejs/dist/*.node
node-linux:
name: node-linux (${{ matrix.config.arch}}-unknown-linux-gnu
name: vectordb (${{ matrix.config.arch}}-unknown-linux-gnu)
runs-on: ${{ matrix.config.runner }}
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -139,7 +142,7 @@ jobs:
node/dist/lancedb-vectordb-linux*.tgz
nodejs-linux:
name: nodejs-linux (${{ matrix.config.arch}}-unknown-linux-gnu
name: lancedb (${{ matrix.config.arch}}-unknown-linux-gnu
runs-on: ${{ matrix.config.runner }}
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -190,6 +193,7 @@ jobs:
!nodejs/dist/*.node
node-windows:
name: vectordb ${{ matrix.target }}
runs-on: windows-2022
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -223,6 +227,7 @@ jobs:
node/dist/lancedb-vectordb-win32*.tgz
nodejs-windows:
name: lancedb ${{ matrix.target }}
runs-on: windows-2022
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -256,6 +261,7 @@ jobs:
nodejs/dist/*.node
release:
name: vectordb NPM Publish
needs: [node, node-macos, node-linux, node-windows]
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
@@ -284,8 +290,18 @@ jobs:
for filename in *.tgz; do
npm publish $PUBLISH_ARGS $filename
done
- name: Notify Slack Action
uses: ravsamhq/notify-slack-action@2.3.0
if: ${{ always() }}
with:
status: ${{ job.status }}
notify_when: "failure"
notification_title: "{workflow} is failing"
env:
SLACK_WEBHOOK_URL: ${{ secrets.ACTION_MONITORING_SLACK }}
release-nodejs:
name: lancedb NPM Publish
needs: [nodejs-macos, nodejs-linux, nodejs-windows]
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
@@ -333,6 +349,15 @@ jobs:
else
npm publish --access public
fi
- name: Notify Slack Action
uses: ravsamhq/notify-slack-action@2.3.0
if: ${{ always() }}
with:
status: ${{ job.status }}
notify_when: "failure"
notification_title: "{workflow} is failing"
env:
SLACK_WEBHOOK_URL: ${{ secrets.ACTION_MONITORING_SLACK }}
update-package-lock:
needs: [release]

View File

@@ -33,11 +33,11 @@ jobs:
python-version: "3.11"
- name: Install ruff
run: |
pip install ruff==0.2.2
pip install ruff==0.5.4
- name: Format check
run: ruff format --check .
- name: Lint
run: ruff .
run: ruff check .
doctest:
name: "Doctest"
timeout-minutes: 30

View File

@@ -53,7 +53,10 @@ jobs:
run: cargo clippy --all --all-features -- -D warnings
linux:
timeout-minutes: 30
runs-on: ubuntu-22.04
# To build all features, we need more disk space than is available
# on the GitHub-provided runner. This is mostly due to the the
# sentence-transformers feature.
runs-on: warp-ubuntu-latest-x64-4x
defaults:
run:
shell: bash
@@ -131,4 +134,3 @@ jobs:
$env:VCPKG_ROOT = $env:VCPKG_INSTALLATION_ROOT
cargo build
cargo test

1
.gitignore vendored
View File

@@ -4,6 +4,7 @@
**/__pycache__
.DS_Store
venv
.venv
.vscode
.zed

View File

@@ -14,8 +14,8 @@ repos:
hooks:
- id: local-biome-check
name: biome check
entry: npx @biomejs/biome@1.7.3 check --config-path nodejs/biome.json nodejs/
entry: npx @biomejs/biome@1.8.3 check --config-path nodejs/biome.json nodejs/
language: system
types: [text]
files: "nodejs/.*"
exclude: nodejs/lancedb/native.d.ts|nodejs/dist/.*
exclude: nodejs/lancedb/native.d.ts|nodejs/dist/.*|nodejs/examples/.*

View File

@@ -20,29 +20,31 @@ keywords = ["lancedb", "lance", "database", "vector", "search"]
categories = ["database-implementations"]
[workspace.dependencies]
lance = { "version" = "=0.13.0", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.13.0" }
lance-linalg = { "version" = "=0.13.0" }
lance-testing = { "version" = "=0.13.0" }
lance-datafusion = { "version" = "=0.13.0" }
lance = { "version" = "=0.17.0", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.17.0" }
lance-linalg = { "version" = "=0.17.0" }
lance-table = { "version" = "=0.17.0" }
lance-testing = { "version" = "=0.17.0" }
lance-datafusion = { "version" = "=0.17.0" }
lance-encoding = { "version" = "=0.17.0" }
# Note that this one does not include pyarrow
arrow = { version = "51.0", optional = false }
arrow-array = "51.0"
arrow-data = "51.0"
arrow-ipc = "51.0"
arrow-ord = "51.0"
arrow-schema = "51.0"
arrow-arith = "51.0"
arrow-cast = "51.0"
arrow = { version = "52.2", optional = false }
arrow-array = "52.2"
arrow-data = "52.2"
arrow-ipc = "52.2"
arrow-ord = "52.2"
arrow-schema = "52.2"
arrow-arith = "52.2"
arrow-cast = "52.2"
async-trait = "0"
chrono = "0.4.35"
datafusion-physical-plan = "37.1"
datafusion-physical-plan = "40.0"
half = { "version" = "=2.4.1", default-features = false, features = [
"num-traits",
] }
futures = "0"
log = "0.4"
object_store = "0.9.0"
object_store = "0.10.2"
pin-project = "1.0.7"
snafu = "0.7.4"
url = "2"

View File

@@ -7,8 +7,8 @@
<a href='https://github.com/lancedb/vectordb-recipes/tree/main' target="_blank"><img alt='LanceDB' src='https://img.shields.io/badge/VectorDB_Recipes-100000?style=for-the-badge&logo=LanceDB&logoColor=white&labelColor=645cfb&color=645cfb'/></a>
<a href='https://lancedb.github.io/lancedb/' target="_blank"><img alt='lancdb' src='https://img.shields.io/badge/DOCS-100000?style=for-the-badge&logo=lancdb&logoColor=white&labelColor=645cfb&color=645cfb'/></a>
[![Blog](https://img.shields.io/badge/Blog-12100E?style=for-the-badge&logoColor=white)](https://blog.lancedb.com/)
[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?style=for-the-badge&logo=discord&logoColor=white)](https://discord.gg/zMM32dvNtd)
[![Blog](https://img.shields.io/badge/Blog-12100E?style=for-the-badge&logoColor=white)](https://blog.lancedb.com/)
[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?style=for-the-badge&logo=discord&logoColor=white)](https://discord.gg/zMM32dvNtd)
[![Twitter](https://img.shields.io/badge/Twitter-%231DA1F2.svg?style=for-the-badge&logo=Twitter&logoColor=white)](https://twitter.com/lancedb)
</p>
@@ -44,26 +44,24 @@ LanceDB's core is written in Rust 🦀 and is built using <a href="https://githu
**Javascript**
```shell
npm install vectordb
npm install @lancedb/lancedb
```
```javascript
const lancedb = require('vectordb');
const db = await lancedb.connect('data/sample-lancedb');
import * as lancedb from "@lancedb/lancedb";
const table = await db.createTable({
name: 'vectors',
data: [
{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 }
]
})
const db = await lancedb.connect("data/sample-lancedb");
const table = await db.createTable("vectors", [
{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 },
], {mode: 'overwrite'});
const query = table.search([0.1, 0.3]).limit(2);
const results = await query.execute();
const query = table.vectorSearch([0.1, 0.3]).limit(2);
const results = await query.toArray();
// You can also search for rows by specific criteria without involving a vector search.
const rowsByCriteria = await table.search(undefined).where("price >= 10").execute();
const rowsByCriteria = await table.query().where("price >= 10").toArray();
```
**Python**

View File

@@ -18,4 +18,4 @@ docker run \
-v $(pwd):/io -w /io \
--memory-swap=-1 \
lancedb-node-manylinux \
bash ci/manylinux_node/build.sh $ARCH
bash ci/manylinux_node/build_vectordb.sh $ARCH

View File

@@ -4,9 +4,9 @@ ARCH=${1:-x86_64}
# We pass down the current user so that when we later mount the local files
# into the container, the files are accessible by the current user.
pushd ci/manylinux_nodejs
pushd ci/manylinux_node
docker build \
-t lancedb-nodejs-manylinux \
-t lancedb-node-manylinux-$ARCH \
--build-arg="ARCH=$ARCH" \
--build-arg="DOCKER_USER=$(id -u)" \
--progress=plain \
@@ -17,5 +17,5 @@ popd
docker run \
-v $(pwd):/io -w /io \
--memory-swap=-1 \
lancedb-nodejs-manylinux \
bash ci/manylinux_nodejs/build.sh $ARCH
lancedb-node-manylinux-$ARCH \
bash ci/manylinux_node/build_lancedb.sh $ARCH

View File

@@ -4,7 +4,7 @@
# range of linux distributions.
ARG ARCH=x86_64
FROM quay.io/pypa/manylinux2014_${ARCH}
FROM quay.io/pypa/manylinux_2_28_${ARCH}
ARG ARCH=x86_64
ARG DOCKER_USER=default_user
@@ -18,8 +18,8 @@ COPY install_protobuf.sh install_protobuf.sh
RUN ./install_protobuf.sh ${ARCH}
ENV DOCKER_USER=${DOCKER_USER}
# Create a group and user
RUN echo ${ARCH} && adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# Create a group and user, but only if it doesn't exist
RUN echo ${ARCH} && id -u ${DOCKER_USER} >/dev/null 2>&1 || adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# We switch to the user to install Rust and Node, since those like to be
# installed at the user level.

View File

View File

@@ -6,7 +6,7 @@
# /usr/bin/ld: failed to set dynamic section sizes: Bad value
set -e
git clone -b OpenSSL_1_1_1u \
git clone -b OpenSSL_1_1_1v \
--single-branch \
https://github.com/openssl/openssl.git

View File

@@ -8,7 +8,7 @@ install_node() {
source "$HOME"/.bashrc
nvm install --no-progress 16
nvm install --no-progress 18
}
install_rust() {

View File

@@ -1,31 +0,0 @@
# Many linux dockerfile with Rust, Node, and Lance dependencies installed.
# This container allows building the node modules native libraries in an
# environment with a very old glibc, so that we are compatible with a wide
# range of linux distributions.
ARG ARCH=x86_64
FROM quay.io/pypa/manylinux2014_${ARCH}
ARG ARCH=x86_64
ARG DOCKER_USER=default_user
# Install static openssl
COPY install_openssl.sh install_openssl.sh
RUN ./install_openssl.sh ${ARCH} > /dev/null
# Protobuf is also installed as root.
COPY install_protobuf.sh install_protobuf.sh
RUN ./install_protobuf.sh ${ARCH}
ENV DOCKER_USER=${DOCKER_USER}
# Create a group and user
RUN echo ${ARCH} && adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# We switch to the user to install Rust and Node, since those like to be
# installed at the user level.
USER ${DOCKER_USER}
COPY prepare_manylinux_node.sh prepare_manylinux_node.sh
RUN cp /prepare_manylinux_node.sh $HOME/ && \
cd $HOME && \
./prepare_manylinux_node.sh ${ARCH}

View File

@@ -1,26 +0,0 @@
#!/bin/bash
# Builds openssl from source so we can statically link to it
# this is to avoid the error we get with the system installation:
# /usr/bin/ld: <library>: version node not found for symbol SSLeay@@OPENSSL_1.0.1
# /usr/bin/ld: failed to set dynamic section sizes: Bad value
set -e
git clone -b OpenSSL_1_1_1u \
--single-branch \
https://github.com/openssl/openssl.git
pushd openssl
if [[ $1 == x86_64* ]]; then
ARCH=linux-x86_64
else
# gnu target
ARCH=linux-aarch64
fi
./Configure no-shared $ARCH
make
make install

View File

@@ -1,15 +0,0 @@
#!/bin/bash
# Installs protobuf compiler. Should be run as root.
set -e
if [[ $1 == x86_64* ]]; then
ARCH=x86_64
else
# gnu target
ARCH=aarch_64
fi
PB_REL=https://github.com/protocolbuffers/protobuf/releases
PB_VERSION=23.1
curl -LO $PB_REL/download/v$PB_VERSION/protoc-$PB_VERSION-linux-$ARCH.zip
unzip protoc-$PB_VERSION-linux-$ARCH.zip -d /usr/local

View File

@@ -1,21 +0,0 @@
#!/bin/bash
set -e
install_node() {
echo "Installing node..."
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
source "$HOME"/.bashrc
nvm install --no-progress 16
}
install_rust() {
echo "Installing rust..."
curl https://sh.rustup.rs -sSf | bash -s -- -y
export PATH="$PATH:/root/.cargo/bin"
}
install_node
install_rust

View File

@@ -26,6 +26,7 @@ theme:
- content.code.copy
- content.tabs.link
- content.action.edit
- content.tooltips
- toc.follow
- navigation.top
- navigation.tabs
@@ -35,6 +36,7 @@ theme:
- navigation.instant
icon:
repo: fontawesome/brands/github
annotation: material/arrow-right-circle
custom_dir: overrides
plugins:
@@ -57,6 +59,8 @@ plugins:
- https://arrow.apache.org/docs/objects.inv
- https://pandas.pydata.org/docs/objects.inv
- mkdocs-jupyter
- render_swagger:
allow_arbitrary_locations: true
markdown_extensions:
- admonition
@@ -74,7 +78,12 @@ markdown_extensions:
- pymdownx.tabbed:
alternate_style: true
- md_in_html
- abbr
- attr_list
- pymdownx.snippets
- pymdownx.emoji:
emoji_index: !!python/name:material.extensions.emoji.twemoji
emoji_generator: !!python/name:material.extensions.emoji.to_svg
nav:
- Home:
@@ -82,14 +91,17 @@ nav:
- 🏃🏼‍♂️ Quick start: basic.md
- 📚 Concepts:
- Vector search: concepts/vector_search.md
- Indexing: concepts/index_ivfpq.md
- Indexing:
- IVFPQ: concepts/index_ivfpq.md
- HNSW: concepts/index_hnsw.md
- Storage: concepts/storage.md
- Data management: concepts/data_management.md
- 🔨 Guides:
- Working with tables: guides/tables.md
- Building an ANN index: ann_indexes.md
- Building a vector index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
@@ -98,21 +110,42 @@ nav:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
- Linear Combination Reranker: reranking/linear_combination.md
- Reciprocal Rank Fusion Reranker: reranking/rrf.md
- Cross Encoder Reranker: reranking/cross_encoder.md
- ColBERT Reranker: reranking/colbert.md
- Jina Reranker: reranking/jina.md
- OpenAI Reranker: reranking/openai.md
- AnswerDotAi Rerankers: reranking/answerdotai.md
- Building Custom Rerankers: reranking/custom_reranker.md
- Example: notebooks/lancedb_reranking.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- Sync -> Async Migration Guide: migration.md
- Migration Guide: migration.md
- Tuning retrieval performance:
- Choosing right query type: guides/tuning_retrievers/1_query_types.md
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- 🧬 Managing embeddings:
- Overview: embeddings/index.md
- Embedding functions: embeddings/embedding_functions.md
- Available models: embeddings/default_embedding_functions.md
- Available models:
- Overview: embeddings/default_embedding_functions.md
- Text Embedding Functions:
- Sentence Transformers: embeddings/available_embedding_models/text_embedding_functions/sentence_transformers.md
- Huggingface Embedding Models: embeddings/available_embedding_models/text_embedding_functions/huggingface_embedding.md
- Ollama Embeddings: embeddings/available_embedding_models/text_embedding_functions/ollama_embedding.md
- OpenAI Embeddings: embeddings/available_embedding_models/text_embedding_functions/openai_embedding.md
- Instructor Embeddings: embeddings/available_embedding_models/text_embedding_functions/instructor_embedding.md
- Gemini Embeddings: embeddings/available_embedding_models/text_embedding_functions/gemini_embedding.md
- Cohere Embeddings: embeddings/available_embedding_models/text_embedding_functions/cohere_embedding.md
- Jina Embeddings: embeddings/available_embedding_models/text_embedding_functions/jina_embedding.md
- AWS Bedrock Text Embedding Functions: embeddings/available_embedding_models/text_embedding_functions/aws_bedrock_embedding.md
- IBM watsonx.ai Embeddings: embeddings/available_embedding_models/text_embedding_functions/ibm_watsonx_ai_embedding.md
- Multimodal Embedding Functions:
- OpenClip embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/openclip_embedding.md
- Imagebind embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/imagebind_embedding.md
- Jina Embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/jina_multimodal_embedding.md
- User-defined embedding functions: embeddings/custom_embedding_function.md
- "Example: Multi-lingual semantic search": notebooks/multi_lingual_example.ipynb
- "Example: MultiModal CLIP Embeddings": notebooks/DisappearingEmbeddingFunction.ipynb
@@ -122,24 +155,31 @@ nav:
- Polars: python/polars_arrow.md
- DuckDB: python/duckdb.md
- LangChain:
- LangChain 🔗: integrations/langchain.md
- LangChain JS/TS 🔗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LangChain 🔗: integrations/langchain.md
- LangChain demo: notebooks/langchain_demo.ipynb
- LangChain JS/TS 🔗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LlamaIndex 🦙:
- LlamaIndex docs: integrations/llamaIndex.md
- LlamaIndex demo: https://docs.llamaindex.ai/en/stable/examples/vector_stores/LanceDBIndexDemo/
- LlamaIndex docs: integrations/llamaIndex.md
- LlamaIndex demo: notebooks/llamaIndex_demo.ipynb
- Pydantic: python/pydantic.md
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- 🎯 Examples:
- Overview: examples/index.md
- 🐍 Python:
- Overview: examples/examples_python.md
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Example - Calculate CLIP Embeddings with Roboflow Inference: examples/image_embeddings_roboflow.md
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- Build From Scratch: examples/python_examples/build_from_scratch.md
- Multimodal: examples/python_examples/multimodal.md
- Rag: examples/python_examples/rag.md
- Vector Search: examples/python_examples/vector_search.md
- Chatbot: examples/python_examples/chatbot.md
- Evaluation: examples/python_examples/evaluations.md
- AI Agent: examples/python_examples/aiagent.md
- Recommender System: examples/python_examples/recommendersystem.md
- Miscellaneous:
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- 👾 JavaScript:
- Overview: examples/examples_js.md
- Serverless Website Chatbot: examples/serverless_website_chatbot.md
@@ -147,22 +187,27 @@ nav:
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- 🦀 Rust:
- Overview: examples/examples_rust.md
- Studies:
- ↗Improve retrievers with hybrid search and reranking: https://blog.lancedb.com/hybrid-search-and-reranking-report/
- 💭 FAQs: faq.md
- ⚙️ API reference:
- 🐍 Python: python/python.md
- 👾 JavaScript (vectordb): javascript/modules.md
- 👾 JavaScript (lancedb): javascript/modules.md
- 👾 JavaScript (lancedb): js/globals.md
- 🦀 Rust: https://docs.rs/lancedb/latest/lancedb/
- ☁️ LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/modules.md
- REST API: cloud/rest.md
- Quick start: basic.md
- Concepts:
- Vector search: concepts/vector_search.md
- Indexing: concepts/index_ivfpq.md
- Indexing:
- IVFPQ: concepts/index_ivfpq.md
- HNSW: concepts/index_hnsw.md
- Storage: concepts/storage.md
- Data management: concepts/data_management.md
- Guides:
@@ -170,6 +215,7 @@ nav:
- Building an ANN index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
@@ -178,21 +224,42 @@ nav:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
- Linear Combination Reranker: reranking/linear_combination.md
- Reciprocal Rank Fusion Reranker: reranking/rrf.md
- Cross Encoder Reranker: reranking/cross_encoder.md
- ColBERT Reranker: reranking/colbert.md
- Jina Reranker: reranking/jina.md
- OpenAI Reranker: reranking/openai.md
- AnswerDotAi Rerankers: reranking/answerdotai.md
- Building Custom Rerankers: reranking/custom_reranker.md
- Example: notebooks/lancedb_reranking.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- Sync -> Async Migration Guide: migration.md
- Migration Guide: migration.md
- Tuning retrieval performance:
- Choosing right query type: guides/tuning_retrievers/1_query_types.md
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- Managing Embeddings:
- Overview: embeddings/index.md
- Embedding functions: embeddings/embedding_functions.md
- Available models: embeddings/default_embedding_functions.md
- Available models:
- Overview: embeddings/default_embedding_functions.md
- Text Embedding Functions:
- Sentence Transformers: embeddings/available_embedding_models/text_embedding_functions/sentence_transformers.md
- Huggingface Embedding Models: embeddings/available_embedding_models/text_embedding_functions/huggingface_embedding.md
- Ollama Embeddings: embeddings/available_embedding_models/text_embedding_functions/ollama_embedding.md
- OpenAI Embeddings: embeddings/available_embedding_models/text_embedding_functions/openai_embedding.md
- Instructor Embeddings: embeddings/available_embedding_models/text_embedding_functions/instructor_embedding.md
- Gemini Embeddings: embeddings/available_embedding_models/text_embedding_functions/gemini_embedding.md
- Cohere Embeddings: embeddings/available_embedding_models/text_embedding_functions/cohere_embedding.md
- Jina Embeddings: embeddings/available_embedding_models/text_embedding_functions/jina_embedding.md
- AWS Bedrock Text Embedding Functions: embeddings/available_embedding_models/text_embedding_functions/aws_bedrock_embedding.md
- IBM watsonx.ai Embeddings: embeddings/available_embedding_models/text_embedding_functions/ibm_watsonx_ai_embedding.md
- Multimodal Embedding Functions:
- OpenClip embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/openclip_embedding.md
- Imagebind embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/imagebind_embedding.md
- Jina Embeddings: embeddings/available_embedding_models/multimodal_embedding_functions/jina_multimodal_embedding.md
- User-defined embedding functions: embeddings/custom_embedding_function.md
- "Example: Multi-lingual semantic search": notebooks/multi_lingual_example.ipynb
- "Example: MultiModal CLIP Embeddings": notebooks/DisappearingEmbeddingFunction.ipynb
@@ -201,33 +268,50 @@ nav:
- Pandas and PyArrow: python/pandas_and_pyarrow.md
- Polars: python/polars_arrow.md
- DuckDB: python/duckdb.md
- LangChain 🦜️🔗↗: https://python.langchain.com/docs/integrations/vectorstores/lancedb
- LangChain 🦜️🔗↗: integrations/langchain.md
- LangChain.js 🦜️🔗↗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LlamaIndex 🦙↗: https://gpt-index.readthedocs.io/en/latest/examples/vector_stores/LanceDBIndexDemo.html
- LlamaIndex 🦙↗: integrations/llamaIndex.md
- Pydantic: python/pydantic.md
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- Examples:
- examples/index.md
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- YouTube Transcript Search (JS): examples/youtube_transcript_bot_with_nodejs.md
- Serverless Chatbot from any website: examples/serverless_website_chatbot.md
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- 🐍 Python:
- Overview: examples/examples_python.md
- Build From Scratch: examples/python_examples/build_from_scratch.md
- Multimodal: examples/python_examples/multimodal.md
- Rag: examples/python_examples/rag.md
- Vector Search: examples/python_examples/vector_search.md
- Chatbot: examples/python_examples/chatbot.md
- Evaluation: examples/python_examples/evaluations.md
- AI Agent: examples/python_examples/aiagent.md
- Recommender System: examples/python_examples/recommendersystem.md
- Miscellaneous:
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- 👾 JavaScript:
- Overview: examples/examples_js.md
- Serverless Website Chatbot: examples/serverless_website_chatbot.md
- YouTube Transcript Search: examples/youtube_transcript_bot_with_nodejs.md
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- 🦀 Rust:
- Overview: examples/examples_rust.md
- Studies:
- studies/overview.md
- ↗Improve retrievers with hybrid search and reranking: https://blog.lancedb.com/hybrid-search-and-reranking-report/
- API reference:
- Overview: api_reference.md
- Python: python/python.md
- Javascript (vectordb): javascript/modules.md
- Javascript (lancedb): js/modules.md
- Javascript (lancedb): js/globals.md
- Rust: https://docs.rs/lancedb/latest/lancedb/index.html
- LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/modules.md
- REST API: cloud/rest.md
extra_css:
- styles/global.css

487
docs/openapi.yml Normal file
View File

@@ -0,0 +1,487 @@
openapi: 3.1.0
info:
version: 1.0.0
title: LanceDB Cloud API
description: |
LanceDB Cloud API is a RESTful API that allows users to access and modify data stored in LanceDB Cloud.
Table actions are considered temporary resource creations and all use POST method.
contact:
name: LanceDB support
url: https://lancedb.com
email: contact@lancedb.com
servers:
- url: https://{db}.{region}.api.lancedb.com
description: LanceDB Cloud REST endpoint.
variables:
db:
default: ""
description: the name of DB
region:
default: "us-east-1"
description: the service region of the DB
security:
- key_auth: []
components:
securitySchemes:
key_auth:
name: x-api-key
type: apiKey
in: header
parameters:
table_name:
name: name
in: path
description: name of the table
required: true
schema:
type: string
responses:
invalid_request:
description: Invalid request
content:
text/plain:
schema:
type: string
not_found:
description: Not found
content:
text/plain:
schema:
type: string
unauthorized:
description: Unauthorized
content:
text/plain:
schema:
type: string
requestBodies:
arrow_stream_buffer:
description: Arrow IPC stream buffer
required: true
content:
application/vnd.apache.arrow.stream:
schema:
type: string
format: binary
paths:
/v1/table/:
get:
description: List tables, optionally, with pagination.
tags:
- Tables
summary: List Tables
operationId: listTables
parameters:
- name: limit
in: query
description: Limits the number of items to return.
schema:
type: integer
- name: page_token
in: query
description: Specifies the starting position of the next query
schema:
type: string
responses:
"200":
description: Successfully returned a list of tables in the DB
content:
application/json:
schema:
type: object
properties:
tables:
type: array
items:
type: string
page_token:
type: string
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create/:
post:
description: Create a new table
summary: Create a new table
operationId: createTable
tags:
- Tables
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Table successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/query/:
post:
description: Vector Query
url: https://{db-uri}.{aws-region}.api.lancedb.com/v1/table/{name}/query/
tags:
- Data
summary: Vector Query
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
vector:
type: FixedSizeList
description: |
The targetted vector to search for. Required.
vector_column:
type: string
description: |
The column to query, it can be inferred from the schema if there is only one vector column.
prefilter:
type: boolean
description: |
Whether to prefilter the data. Optional.
k:
type: integer
description: |
The number of search results to return. Default is 10.
distance_type:
type: string
description: |
The distance metric to use for search. L2, Cosine, Dot and Hamming are supported. Default is L2.
bypass_vector_index:
type: boolean
description: |
Whether to bypass vector index. Optional.
filter:
type: string
description: |
A filter expression that specifies the rows to query. Optional.
columns:
type: array
items:
type: string
description: |
The columns to return. Optional.
nprobe:
type: integer
description: |
The number of probes to use for search. Optional.
refine_factor:
type: integer
description: |
The refine factor to use for search. Optional.
default: null
fast_search:
type: boolean
description: |
Whether to use fast search. Optional.
default: false
required:
- vector
responses:
"200":
description: top k results if query is successfully executed
content:
application/json:
schema:
type: object
properties:
results:
type: array
items:
type: object
properties:
id:
type: integer
selected_col_1_to_return:
type: col_1_type
selected_col_n_to_return:
type: col_n_type
_distance:
type: float
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/insert/:
post:
description: Insert new data to the Table.
tags:
- Data
operationId: insertData
summary: Insert new data.
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Insert successful
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/merge_insert/:
post:
description: Create a "merge insert" operation
This operation can add rows, update rows, and remove rows all in a single
transaction. See python method `lancedb.table.Table.merge_insert` for examples.
tags:
- Data
summary: Merge Insert
operationId: mergeInsert
parameters:
- $ref: "#/components/parameters/table_name"
- name: on
in: query
description: |
The column to use as the primary key for the merge operation.
required: true
schema:
type: string
- name: when_matched_update_all
in: query
description: |
Rows that exist in both the source table (new data) and
the target table (old data) will be updated, replacing
the old row with the corresponding matching row.
required: false
schema:
type: boolean
- name: when_matched_update_all_filt
in: query
description: |
If present then only rows that satisfy the filter expression will
be updated
required: false
schema:
type: string
- name: when_not_matched_insert_all
in: query
description: |
Rows that exist only in the source table (new data) will be
inserted into the target table (old data).
required: false
schema:
type: boolean
- name: when_not_matched_by_source_delete
in: query
description: |
Rows that exist only in the target table (old data) will be
deleted. An optional condition (`when_not_matched_by_source_delete_filt`)
can be provided to limit what data is deleted.
required: false
schema:
type: boolean
- name: when_not_matched_by_source_delete_filt
in: query
description: |
The filter expression that specifies the rows to delete.
required: false
schema:
type: string
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Merge Insert successful
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/delete/:
post:
description: Delete rows from a table.
tags:
- Data
summary: Delete rows from a table
operationId: deleteData
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
predicate:
type: string
description: |
A filter expression that specifies the rows to delete.
responses:
"200":
description: Delete successful
"401":
$ref: "#/components/responses/unauthorized"
/v1/table/{name}/drop/:
post:
description: Drop a table
tags:
- Tables
summary: Drop a table
operationId: dropTable
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Drop successful
"401":
$ref: "#/components/responses/unauthorized"
/v1/table/{name}/describe/:
post:
description: Describe a table and return Table Information.
tags:
- Tables
summary: Describe a table
operationId: describeTable
parameters:
- $ref: "#/components/parameters/table_name"
responses:
"200":
description: Table information
content:
application/json:
schema:
type: object
properties:
table:
type: string
version:
type: integer
schema:
type: string
stats:
type: object
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/index/list/:
post:
description: List indexes of a table
tags:
- Tables
summary: List indexes of a table
operationId: listIndexes
parameters:
- $ref: "#/components/parameters/table_name"
responses:
"200":
description: Available list of indexes on the table.
content:
application/json:
schema:
type: object
properties:
indexes:
type: array
items:
type: object
properties:
columns:
type: array
items:
type: string
index_name:
type: string
index_uuid:
type: string
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create_index/:
post:
description: Create vector index on a Table
tags:
- Tables
summary: Create vector index on a Table
operationId: createIndex
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
column:
type: string
metric_type:
type: string
nullable: false
description: |
The metric type to use for the index. L2, Cosine, Dot are supported.
index_type:
type: string
responses:
"200":
description: Index successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create_scalar_index/:
post:
description: Create a scalar index on a table
tags:
- Tables
summary: Create a scalar index on a table
operationId: createScalarIndex
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
column:
type: string
index_type:
type: string
required: false
responses:
"200":
description: Scalar Index successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"

View File

@@ -1,5 +1,7 @@
mkdocs==1.5.3
mkdocs-jupyter==0.24.1
mkdocs-material==9.5.3
mkdocstrings[python]==0.20.0
pydantic
mkdocstrings[python]==0.25.2
griffe
mkdocs-render-swagger-plugin
pydantic

View File

@@ -38,13 +38,27 @@ Lance supports `IVF_PQ` index type by default.
tbl.create_index(num_partitions=256, num_sub_vectors=96)
```
=== "Typescript"
=== "TypeScript"
```typescript
--8<--- "docs/src/ann_indexes.ts:import"
=== "@lancedb/lancedb"
--8<-- "docs/src/ann_indexes.ts:ingest"
```
Creating indexes is done via the [lancedb.Table.createIndex](../js/classes/Table.md/#createIndex) method.
```typescript
--8<--- "nodejs/examples/ann_indexes.ts:import"
--8<-- "nodejs/examples/ann_indexes.ts:ingest"
```
=== "vectordb (deprecated)"
Creating indexes is done via the [lancedb.Table.createIndex](../javascript/interfaces/Table.md/#createIndex) method.
```typescript
--8<--- "docs/src/ann_indexes.ts:import"
--8<-- "docs/src/ann_indexes.ts:ingest"
```
=== "Rust"
@@ -91,27 +105,27 @@ You can specify the GPU device to train IVF partitions via
=== "Linux"
<!-- skip-test -->
``` { .python .copy }
# Create index using CUDA on Nvidia GPUs.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="cuda"
)
```
<!-- skip-test -->
``` { .python .copy }
# Create index using CUDA on Nvidia GPUs.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="cuda"
)
```
=== "MacOS"
<!-- skip-test -->
```python
# Create index using MPS on Apple Silicon.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="mps"
)
```
<!-- skip-test -->
```python
# Create index using MPS on Apple Silicon.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="mps"
)
```
Troubleshooting:
@@ -150,11 +164,19 @@ There are a couple of parameters that can be used to fine-tune the search:
1 [0.48587373, 0.269207, 0.15095535, 0.65531915,... item 3953 108.393867
```
=== "Typescript"
=== "TypeScript"
```typescript
--8<-- "docs/src/ann_indexes.ts:search1"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search1"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/ann_indexes.ts:search1"
```
=== "Rust"
@@ -172,15 +194,23 @@ You can further filter the elements returned by a search using a where clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).where("item != 'item 1141'").to_pandas()
```
```python
tbl.search(np.random.random((1536))).where("item != 'item 1141'").to_pandas()
```
=== "Typescript"
=== "TypeScript"
```javascript
--8<-- "docs/src/ann_indexes.ts:search2"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search2"
```
=== "vectordb (deprecated)"
```javascript
--8<-- "docs/src/ann_indexes.ts:search2"
```
### Projections (select clause)
@@ -188,23 +218,31 @@ You can select the columns returned by the query using a select clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).select(["vector"]).to_pandas()
```
```python
tbl.search(np.random.random((1536))).select(["vector"]).to_pandas()
```
```text
vector _distance
0 [0.30928212, 0.022668175, 0.1756372, 0.4911822... 93.971092
1 [0.2525465, 0.01723831, 0.261568, 0.002007689,... 95.173485
...
```
```text
vector _distance
0 [0.30928212, 0.022668175, 0.1756372, 0.4911822... 93.971092
1 [0.2525465, 0.01723831, 0.261568, 0.002007689,... 95.173485
...
```
=== "Typescript"
=== "TypeScript"
```typescript
--8<-- "docs/src/ann_indexes.ts:search3"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search3"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/ann_indexes.ts:search3"
```
## FAQ

View File

@@ -4,5 +4,5 @@ The API reference for the LanceDB client SDKs are available at the following loc
- [Python](python/python.md)
- [JavaScript (legacy vectordb package)](javascript/modules.md)
- [JavaScript (newer @lancedb/lancedb package)](js/modules.md)
- [JavaScript (newer @lancedb/lancedb package)](js/globals.md)
- [Rust](https://docs.rs/lancedb/latest/lancedb/index.html)

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@@ -0,0 +1 @@
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@@ -16,11 +16,60 @@
pip install lancedb
```
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```shell
npm install vectordb
```
```shell
npm install @lancedb/lancedb
```
!!! note "Bundling `@lancedb/lancedb` apps with Webpack"
Since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ '@lancedb/lancedb': '@lancedb/lancedb' })
return config;
}
})
```
!!! note "Yarn users"
Unlike other package managers, Yarn does not automatically resolve peer dependencies. If you are using Yarn, you will need to manually install 'apache-arrow':
```shell
yarn add apache-arrow
```
=== "vectordb (deprecated)"
```shell
npm install vectordb
```
!!! note "Bundling `vectordb` apps with Webpack"
Since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ vectordb: 'vectordb' })
return config;
}
})
```
!!! note "Yarn users"
Unlike other package managers, Yarn does not automatically resolve peer dependencies. If you are using Yarn, you will need to manually install 'apache-arrow':
```shell
yarn add apache-arrow
```
=== "Rust"
@@ -58,14 +107,21 @@ recommend switching to stable releases.
pip install --pre --extra-index-url https://pypi.fury.io/lancedb/ lancedb
```
=== "Typescript"
=== "Typescript[^1]"
```shell
npm install vectordb@preview
```
=== "@lancedb/lancedb"
```shell
npm install @lancedb/lancedb@preview
```
=== "vectordb (deprecated)"
```shell
npm install vectordb@preview
```
=== "Rust"
We don't push preview releases to crates.io, but you can referent the tag
in GitHub within your Cargo dependencies:
@@ -93,23 +149,22 @@ recommend switching to stable releases.
use the same syntax as the asynchronous API. To help with this migration we
have created a [migration guide](migration.md) detailing the differences.
=== "Typescript"
=== "Typescript[^1]"
```typescript
--8<-- "docs/src/basic_legacy.ts:import"
=== "@lancedb/lancedb"
--8<-- "docs/src/basic_legacy.ts:open_db"
```
```typescript
import * as lancedb from "@lancedb/lancedb";
import * as arrow from "apache-arrow";
!!! note "`@lancedb/lancedb` vs. `vectordb`"
--8<-- "nodejs/examples/basic.ts:connect"
```
The Javascript SDK was originally released as `vectordb`. In an effort to
reduce maintenance we are aligning our SDKs. The new, aligned, Javascript
API is being released as `lancedb`. If you are starting new work we encourage
you to try out `lancedb`. Once the new API is feature complete we will begin
slowly deprecating `vectordb` in favor of `lancedb`. There is a
[migration guide](migration.md) detailing the differences which will assist
you in this process.
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:open_db"
```
=== "Rust"
@@ -152,15 +207,23 @@ table.
--8<-- "python/python/tests/docs/test_basic.py:create_table_async_pandas"
```
=== "Typescript"
=== "Typescript[^1]"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_table"
```
=== "@lancedb/lancedb"
If the table already exists, LanceDB will raise an error by default.
If you want to overwrite the table, you can pass in `mode="overwrite"`
to the `createTable` function.
```typescript
--8<-- "nodejs/examples/basic.ts:create_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_table"
```
If the table already exists, LanceDB will raise an error by default.
If you want to overwrite the table, you can pass in `mode:"overwrite"`
to the `createTable` function.
=== "Rust"
@@ -200,11 +263,19 @@ similar to a `CREATE TABLE` statement in SQL.
!!! note "You can define schema in Pydantic"
LanceDB comes with Pydantic support, which allows you to define the schema of your data using Pydantic models. This makes it easy to work with LanceDB tables and data. Learn more about all supported types in [tables guide](./guides/tables.md).
=== "Typescript"
=== "Typescript[^1]"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_empty_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
=== "Rust"
@@ -223,11 +294,19 @@ Once created, you can open a table as follows:
--8<-- "python/python/tests/docs/test_basic.py:open_table_async"
```
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:open_table"
```
=== "vectordb (deprecated)"
```typescript
const tbl = await db.openTable("myTable");
```
```typescript
const tbl = await db.openTable("myTable");
```
=== "Rust"
@@ -244,11 +323,18 @@ If you forget the name of your table, you can always get a listing of all table
--8<-- "python/python/tests/docs/test_basic.py:table_names_async"
```
=== "Javascript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```javascript
console.log(await db.tableNames());
```
```typescript
--8<-- "nodejs/examples/basic.ts:table_names"
```
=== "vectordb (deprecated)"
```typescript
console.log(await db.tableNames());
```
=== "Rust"
@@ -267,11 +353,18 @@ After a table has been created, you can always add more data to it as follows:
--8<-- "python/python/tests/docs/test_basic.py:add_data_async"
```
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "docs/src/basic_legacy.ts:add"
```
```typescript
--8<-- "nodejs/examples/basic.ts:add_data"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:add"
```
=== "Rust"
@@ -292,11 +385,18 @@ Once you've embedded the query, you can find its nearest neighbors as follows:
This returns a pandas DataFrame with the results.
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "docs/src/basic_legacy.ts:search"
```
```typescript
--8<-- "nodejs/examples/basic.ts:vector_search"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:search"
```
=== "Rust"
@@ -325,11 +425,18 @@ LanceDB allows you to create an ANN index on a table as follows:
--8<-- "python/python/tests/docs/test_basic.py:create_index_async"
```
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```{.typescript .ignore}
--8<-- "docs/src/basic_legacy.ts:create_index"
```
```typescript
--8<-- "nodejs/examples/basic.ts:create_index"
```
=== "vectordb (deprecated)"
```{.typescript .ignore}
--8<-- "docs/src/basic_legacy.ts:create_index"
```
=== "Rust"
@@ -357,11 +464,19 @@ This can delete any number of rows that match the filter.
--8<-- "python/python/tests/docs/test_basic.py:delete_rows_async"
```
=== "Typescript"
=== "Typescript[^1]"
```typescript
--8<-- "docs/src/basic_legacy.ts:delete"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:delete_rows"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:delete"
```
=== "Rust"
@@ -378,9 +493,15 @@ simple or complex as needed. To see what expressions are supported, see the
Read more: [lancedb.table.Table.delete][]
=== "Javascript"
=== "Typescript[^1]"
Read more: [vectordb.Table.delete](javascript/interfaces/Table.md#delete)
=== "@lancedb/lancedb"
Read more: [lancedb.Table.delete](javascript/interfaces/Table.md#delete)
=== "vectordb (deprecated)"
Read more: [vectordb.Table.delete](javascript/interfaces/Table.md#delete)
=== "Rust"
@@ -392,23 +513,31 @@ Use the `drop_table()` method on the database to remove a table.
=== "Python"
```python
--8<-- "python/python/tests/docs/test_basic.py:drop_table"
--8<-- "python/python/tests/docs/test_basic.py:drop_table_async"
```
```python
--8<-- "python/python/tests/docs/test_basic.py:drop_table"
--8<-- "python/python/tests/docs/test_basic.py:drop_table_async"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
This permanently removes the table and is not recoverable, unlike deleting rows.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
=== "Typescript"
=== "Typescript[^1]"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
=== "@lancedb/lancedb"
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
```typescript
--8<-- "nodejs/examples/basic.ts:drop_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
=== "Rust"
@@ -416,19 +545,6 @@ Use the `drop_table()` method on the database to remove a table.
--8<-- "rust/lancedb/examples/simple.rs:drop_table"
```
!!! note "Bundling `vectordb` apps with Webpack"
If you're using the `vectordb` module in JavaScript, since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ vectordb: 'vectordb' })
return config;
}
})
```
## Using the Embedding API
You can use the embedding API when working with embedding models. It automatically vectorizes the data at ingestion and query time and comes with built-in integrations with popular embedding models like Openai, Hugging Face, Sentence Transformers, CLIP and more.
@@ -440,7 +556,23 @@ You can use the embedding API when working with embedding models. It automatical
--8<-- "python/python/tests/docs/test_embeddings_optional.py:openai_embeddings"
```
Learn about using the existing integrations and creating custom embedding functions in the [embedding API guide](./embeddings/).
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/embedding.ts:imports"
--8<-- "nodejs/examples/embedding.ts:openai_embeddings"
```
=== "Rust"
```rust
--8<-- "rust/lancedb/examples/openai.rs:imports"
--8<-- "rust/lancedb/examples/openai.rs:openai_embeddings"
```
Learn about using the existing integrations and creating custom embedding functions in the [embedding API guide](./embeddings/index.md).
## What's next
@@ -448,3 +580,5 @@ Learn about using the existing integrations and creating custom embedding functi
This section covered the very basics of using LanceDB. If you're learning about vector databases for the first time, you may want to read the page on [indexing](concepts/index_ivfpq.md) to get familiar with the concepts.
If you've already worked with other vector databases, you may want to read the [guides](guides/tables.md) to learn how to work with LanceDB in more detail.
[^1]: The `vectordb` package is a legacy package that is deprecated in favor of `@lancedb/lancedb`. The `vectordb` package will continue to receive bug fixes and security updates until September 2024. We recommend all new projects use `@lancedb/lancedb`. See the [migration guide](migration.md) for more information.

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@@ -1,6 +1,14 @@
// --8<-- [start:import]
import * as lancedb from "vectordb";
import { Schema, Field, Float32, FixedSizeList, Int32, Float16 } from "apache-arrow";
import {
Schema,
Field,
Float32,
FixedSizeList,
Int32,
Float16,
} from "apache-arrow";
import * as arrow from "apache-arrow";
// --8<-- [end:import]
import * as fs from "fs";
import { Table as ArrowTable, Utf8 } from "apache-arrow";
@@ -20,9 +28,33 @@ const example = async () => {
{ vector: [3.1, 4.1], item: "foo", price: 10.0 },
{ vector: [5.9, 26.5], item: "bar", price: 20.0 },
],
{ writeMode: lancedb.WriteMode.Overwrite }
{ writeMode: lancedb.WriteMode.Overwrite },
);
// --8<-- [end:create_table]
{
// --8<-- [start:create_table_with_schema]
const schema = new arrow.Schema([
new arrow.Field(
"vector",
new arrow.FixedSizeList(
2,
new arrow.Field("item", new arrow.Float32(), true),
),
),
new arrow.Field("item", new arrow.Utf8(), true),
new arrow.Field("price", new arrow.Float32(), true),
]);
const data = [
{ vector: [3.1, 4.1], item: "foo", price: 10.0 },
{ vector: [5.9, 26.5], item: "bar", price: 20.0 },
];
const tbl = await db.createTable({
name: "myTableWithSchema",
data,
schema,
});
// --8<-- [end:create_table_with_schema]
}
// --8<-- [start:add]
const newData = Array.from({ length: 500 }, (_, i) => ({
@@ -42,33 +74,35 @@ const example = async () => {
// --8<-- [end:create_index]
// --8<-- [start:create_empty_table]
const schema = new Schema([
new Field("id", new Int32()),
new Field("name", new Utf8()),
const schema = new arrow.Schema([
new arrow.Field("id", new arrow.Int32()),
new arrow.Field("name", new arrow.Utf8()),
]);
const empty_tbl = await db.createTable({ name: "empty_table", schema });
// --8<-- [end:create_empty_table]
// --8<-- [start:create_f16_table]
const dim = 16
const total = 10
const f16_schema = new Schema([
new Field('id', new Int32()),
{
// --8<-- [start:create_f16_table]
const dim = 16;
const total = 10;
const schema = new Schema([
new Field("id", new Int32()),
new Field(
'vector',
new FixedSizeList(dim, new Field('item', new Float16(), true)),
false
)
])
const data = lancedb.makeArrowTable(
"vector",
new FixedSizeList(dim, new Field("item", new Float16(), true)),
false,
),
]);
const data = lancedb.makeArrowTable(
Array.from(Array(total), (_, i) => ({
id: i,
vector: Array.from(Array(dim), Math.random)
vector: Array.from(Array(dim), Math.random),
})),
{ f16_schema }
)
const table = await db.createTable('f16_tbl', data)
// --8<-- [end:create_f16_table]
{ schema },
);
const table = await db.createTable("f16_tbl", data);
// --8<-- [end:create_f16_table]
}
// --8<-- [start:search]
const query = await tbl.search([100, 100]).limit(2).execute();

1
docs/src/cloud/rest.md Normal file
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@@ -0,0 +1 @@
!!swagger ../../openapi.yml!!

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@@ -0,0 +1,92 @@
# Understanding HNSW index
Approximate Nearest Neighbor (ANN) search is a method for finding data points near a given point in a dataset, though not always the exact nearest one. HNSW is one of the most accurate and fastest Approximate Nearest Neighbour search algorithms, Its beneficial in high-dimensional spaces where finding the same nearest neighbor would be too slow and costly
[Jump to usage](#usage)
There are three main types of ANN search algorithms:
* **Tree-based search algorithms**: Use a tree structure to organize and store data points.
* * **Hash-based search algorithms**: Use a specialized geometric hash table to store and manage data points. These algorithms typically focus on theoretical guarantees, and don't usually perform as well as the other approaches in practice.
* **Graph-based search algorithms**: Use a graph structure to store data points, which can be a bit complex.
HNSW is a graph-based algorithm. All graph-based search algorithms rely on the idea of a k-nearest neighbor (or k-approximate nearest neighbor) graph, which we outline below.
HNSW also combines this with the ideas behind a classic 1-dimensional search data structure: the skip list.
## k-Nearest Neighbor Graphs and k-approximate Nearest neighbor Graphs
The k-nearest neighbor graph actually predates its use for ANN search. Its construction is quite simple:
* Each vector in the dataset is given an associated vertex.
* Each vertex has outgoing edges to its k nearest neighbors. That is, the k closest other vertices by Euclidean distance between the two corresponding vectors. This can be thought of as a "friend list" for the vertex.
* For some applications (including nearest-neighbor search), the incoming edges are also added.
Eventually, it was realized that the following greedy search method over such a graph typically results in good approximate nearest neighbors:
* Given a query vector, start at some fixed "entry point" vertex (e.g. the approximate center node).
* Look at that vertex's neighbors. If any of them are closer to the query vector than the current vertex, then move to that vertex.
* Repeat until a local optimum is found.
The above algorithm also generalizes to e.g. top 10 approximate nearest neighbors.
Computing a k-nearest neighbor graph is actually quite slow, taking quadratic time in the dataset size. It was quickly realized that near-identical performance can be achieved using a k-approximate nearest neighbor graph. That is, instead of obtaining the k-nearest neighbors for each vertex, an approximate nearest neighbor search data structure is used to build much faster.
In fact, another data structure is not needed: This can be done "incrementally".
That is, if you start with a k-ANN graph for n-1 vertices, you can extend it to a k-ANN graph for n vertices as well by using the graph to obtain the k-ANN for the new vertex.
One downside of k-NN and k-ANN graphs alone is that one must typically build them with a large value of k to get decent results, resulting in a large index.
## HNSW: Hierarchical Navigable Small Worlds
HNSW builds on k-ANN in two main ways:
* Instead of getting the k-approximate nearest neighbors for a large value of k, it sparsifies the k-ANN graph using a carefully chosen "edge pruning" heuristic, allowing for the number of edges per vertex to be limited to a relatively small constant.
* The "entry point" vertex is chosen dynamically using a recursively constructed data structure on a subset of the data, similarly to a skip list.
This recursive structure can be thought of as separating into layers:
* At the bottom-most layer, an k-ANN graph on the whole dataset is present.
* At the second layer, a k-ANN graph on a fraction of the dataset (e.g. 10%) is present.
* At the Lth layer, a k-ANN graph is present. It is over a (constant) fraction (e.g. 10%) of the vectors/vertices present in the L-1th layer.
Then the greedy search routine operates as follows:
* At the top layer (using an arbitrary vertex as an entry point), use the greedy local search routine on the k-ANN graph to get an approximate nearest neighbor at that layer.
* Using the approximate nearest neighbor found in the previous layer as an entry point, find an approximate nearest neighbor in the next layer with the same method.
* Repeat until the bottom-most layer is reached. Then use the entry point to find multiple nearest neighbors (e.g. top 10).
## Usage
We can combine the above concepts to understand how to build and query an HNSW index in LanceDB.
### Construct index
```python
import lancedb
import numpy as np
uri = "/tmp/lancedb"
db = lancedb.connect(uri)
# Create 10,000 sample vectors
data = [
{"vector": row, "item": f"item {i}"}
for i, row in enumerate(np.random.random((10_000, 1536)).astype('float32'))
]
# Add the vectors to a table
tbl = db.create_table("my_vectors", data=data)
# Create and train the HNSW index for a 1536-dimensional vector
# Make sure you have enough data in the table for an effective training step
tbl.create_index(index_type=IVF_HNSW_SQ)
```
### Query the index
```python
# Search using a random 1536-dimensional embedding
tbl.search(np.random.random((1536))) \
.limit(2) \
.to_pandas()
```

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@@ -0,0 +1,67 @@
# Imagebind embeddings
We have support for [imagebind](https://github.com/facebookresearch/ImageBind) model embeddings. You can download our version of the packaged model via - `pip install imagebind-packaged==0.1.2`.
This function is registered as `imagebind` and supports Audio, Video and Text modalities(extending to Thermal,Depth,IMU data):
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"imagebind_huge"` | Name of the model. |
| `device` | `str` | `"cpu"` | The device to run the model on. Can be `"cpu"` or `"gpu"`. |
| `normalize` | `bool` | `False` | set to `True` to normalize your inputs before model ingestion. |
Below is an example demonstrating how the API works:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect(tmp_path)
func = get_registry().get("imagebind").create()
class ImageBindModel(LanceModel):
text: str
image_uri: str = func.SourceField()
audio_path: str
vector: Vector(func.ndims()) = func.VectorField()
# add locally accessible image paths
text_list=["A dog.", "A car", "A bird"]
image_paths=[".assets/dog_image.jpg", ".assets/car_image.jpg", ".assets/bird_image.jpg"]
audio_paths=[".assets/dog_audio.wav", ".assets/car_audio.wav", ".assets/bird_audio.wav"]
# Load data
inputs = [
{"text": a, "audio_path": b, "image_uri": c}
for a, b, c in zip(text_list, audio_paths, image_paths)
]
#create table and add data
table = db.create_table("img_bind", schema=ImageBindModel)
table.add(inputs)
```
Now, we can search using any modality:
#### image search
```python
query_image = "./assets/dog_image2.jpg" #download an image and enter that path here
actual = table.search(query_image).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "dog")
```
#### audio search
```python
query_audio = "./assets/car_audio2.wav" #download an audio clip and enter path here
actual = table.search(query_audio).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "car")
```
#### Text search
You can add any input query and fetch the result as follows:
```python
query = "an animal which flies and tweets"
actual = table.search(query).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "bird")
```
If you have any questions about the embeddings API, supported models, or see a relevant model missing, please raise an issue [on GitHub](https://github.com/lancedb/lancedb/issues).

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@@ -0,0 +1,51 @@
# Jina Embeddings : Multimodal
Jina embeddings can also be used to embed both text and image data, only some of the models support image data and you can check the list
under [https://jina.ai/embeddings/](https://jina.ai/embeddings/)
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"jina-clip-v1"` | The model ID of the jina model to use |
Usage Example:
```python
import os
import requests
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
import pandas as pd
os.environ['JINA_API_KEY'] = 'jina_*'
db = lancedb.connect("~/.lancedb")
func = get_registry().get("jina").create()
class Images(LanceModel):
label: str
image_uri: str = func.SourceField() # image uri as the source
image_bytes: bytes = func.SourceField() # image bytes as the source
vector: Vector(func.ndims()) = func.VectorField() # vector column
vec_from_bytes: Vector(func.ndims()) = func.VectorField() # Another vector column
table = db.create_table("images", schema=Images)
labels = ["cat", "cat", "dog", "dog", "horse", "horse"]
uris = [
"http://farm1.staticflickr.com/53/167798175_7c7845bbbd_z.jpg",
"http://farm1.staticflickr.com/134/332220238_da527d8140_z.jpg",
"http://farm9.staticflickr.com/8387/8602747737_2e5c2a45d4_z.jpg",
"http://farm5.staticflickr.com/4092/5017326486_1f46057f5f_z.jpg",
"http://farm9.staticflickr.com/8216/8434969557_d37882c42d_z.jpg",
"http://farm6.staticflickr.com/5142/5835678453_4f3a4edb45_z.jpg",
]
# get each uri as bytes
image_bytes = [requests.get(uri).content for uri in uris]
table.add(
pd.DataFrame({"label": labels, "image_uri": uris, "image_bytes": image_bytes})
)
```

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# OpenClip embeddings
We support CLIP model embeddings using the open source alternative, [open-clip](https://github.com/mlfoundations/open_clip) which supports various customizations. It is registered as `open-clip` and supports the following customizations:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"ViT-B-32"` | The name of the model. |
| `pretrained` | `str` | `"laion2b_s34b_b79k"` | The name of the pretrained model to load. |
| `device` | `str` | `"cpu"` | The device to run the model on. Can be `"cpu"` or `"gpu"`. |
| `batch_size` | `int` | `64` | The number of images to process in a batch. |
| `normalize` | `bool` | `True` | Whether to normalize the input images before feeding them to the model. |
This embedding function supports ingesting images as both bytes and urls. You can query them using both test and other images.
!!! info
LanceDB supports ingesting images directly from accessible links.
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect(tmp_path)
func = get_registry().get("open-clip").create()
class Images(LanceModel):
label: str
image_uri: str = func.SourceField() # image uri as the source
image_bytes: bytes = func.SourceField() # image bytes as the source
vector: Vector(func.ndims()) = func.VectorField() # vector column
vec_from_bytes: Vector(func.ndims()) = func.VectorField() # Another vector column
table = db.create_table("images", schema=Images)
labels = ["cat", "cat", "dog", "dog", "horse", "horse"]
uris = [
"http://farm1.staticflickr.com/53/167798175_7c7845bbbd_z.jpg",
"http://farm1.staticflickr.com/134/332220238_da527d8140_z.jpg",
"http://farm9.staticflickr.com/8387/8602747737_2e5c2a45d4_z.jpg",
"http://farm5.staticflickr.com/4092/5017326486_1f46057f5f_z.jpg",
"http://farm9.staticflickr.com/8216/8434969557_d37882c42d_z.jpg",
"http://farm6.staticflickr.com/5142/5835678453_4f3a4edb45_z.jpg",
]
# get each uri as bytes
image_bytes = [requests.get(uri).content for uri in uris]
table.add(
pd.DataFrame({"label": labels, "image_uri": uris, "image_bytes": image_bytes})
)
```
Now we can search using text from both the default vector column and the custom vector column
```python
# text search
actual = table.search("man's best friend").limit(1).to_pydantic(Images)[0]
print(actual.label) # prints "dog"
frombytes = (
table.search("man's best friend", vector_column_name="vec_from_bytes")
.limit(1)
.to_pydantic(Images)[0]
)
print(frombytes.label)
```
Because we're using a multi-modal embedding function, we can also search using images
```python
# image search
query_image_uri = "http://farm1.staticflickr.com/200/467715466_ed4a31801f_z.jpg"
image_bytes = requests.get(query_image_uri).content
query_image = Image.open(io.BytesIO(image_bytes))
actual = table.search(query_image).limit(1).to_pydantic(Images)[0]
print(actual.label == "dog")
# image search using a custom vector column
other = (
table.search(query_image, vector_column_name="vec_from_bytes")
.limit(1)
.to_pydantic(Images)[0]
)
print(actual.label)
```

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# AWS Bedrock Text Embedding Functions
AWS Bedrock supports multiple base models for generating text embeddings. You need to setup the AWS credentials to use this embedding function.
You can do so by using `awscli` and also add your session_token:
```shell
aws configure
aws configure set aws_session_token "<your_session_token>"
```
to ensure that the credentials are set up correctly, you can run the following command:
```shell
aws sts get-caller-identity
```
Supported Embedding modelIDs are:
* `amazon.titan-embed-text-v1`
* `cohere.embed-english-v3`
* `cohere.embed-multilingual-v3`
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| **name** | str | "amazon.titan-embed-text-v1" | The model ID of the bedrock model to use. Supported base models for Text Embeddings: amazon.titan-embed-text-v1, cohere.embed-english-v3, cohere.embed-multilingual-v3 |
| **region** | str | "us-east-1" | Optional name of the AWS Region in which the service should be called (e.g., "us-east-1"). |
| **profile_name** | str | None | Optional name of the AWS profile to use for calling the Bedrock service. If not specified, the default profile will be used. |
| **assumed_role** | str | None | Optional ARN of an AWS IAM role to assume for calling the Bedrock service. If not specified, the current active credentials will be used. |
| **role_session_name** | str | "lancedb-embeddings" | Optional name of the AWS IAM role session to use for calling the Bedrock service. If not specified, a "lancedb-embeddings" name will be used. |
| **runtime** | bool | True | Optional choice of getting different client to perform operations with the Amazon Bedrock service. |
| **max_retries** | int | 7 | Optional number of retries to perform when a request fails. |
Usage Example:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
import pandas as pd
model = get_registry().get("bedrock-text").create()
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("tmp_path")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```

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# Cohere Embeddings
Using cohere API requires cohere package, which can be installed using `pip install cohere`. Cohere embeddings are used to generate embeddings for text data. The embeddings can be used for various tasks like semantic search, clustering, and classification.
You also need to set the `COHERE_API_KEY` environment variable to use the Cohere API.
Supported models are:
- embed-english-v3.0
- embed-multilingual-v3.0
- embed-english-light-v3.0
- embed-multilingual-light-v3.0
- embed-english-v2.0
- embed-english-light-v2.0
- embed-multilingual-v2.0
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|--------|---------|
| `name` | `str` | `"embed-english-v2.0"` | The model ID of the cohere model to use. Supported base models for Text Embeddings: embed-english-v3.0, embed-multilingual-v3.0, embed-english-light-v3.0, embed-multilingual-light-v3.0, embed-english-v2.0, embed-english-light-v2.0, embed-multilingual-v2.0 |
| `source_input_type` | `str` | `"search_document"` | The type of input data to be used for the source column. |
| `query_input_type` | `str` | `"search_query"` | The type of input data to be used for the query. |
Cohere supports following input types:
| Input Type | Description |
|-------------------------|---------------------------------------|
| "`search_document`" | Used for embeddings stored in a vector|
| | database for search use-cases. |
| "`search_query`" | Used for embeddings of search queries |
| | run against a vector DB |
| "`semantic_similarity`" | Specifies the given text will be used |
| | for Semantic Textual Similarity (STS) |
| "`classification`" | Used for embeddings passed through a |
| | text classifier. |
| "`clustering`" | Used for the embeddings run through a |
| | clustering algorithm |
Usage Example:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
cohere = EmbeddingFunctionRegistry
.get_instance()
.get("cohere")
.create(name="embed-multilingual-v2.0")
class TextModel(LanceModel):
text: str = cohere.SourceField()
vector: Vector(cohere.ndims()) = cohere.VectorField()
data = [ { "text": "hello world" },
{ "text": "goodbye world" }]
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(data)
```

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# Gemini Embeddings
With Google's Gemini, you can represent text (words, sentences, and blocks of text) in a vectorized form, making it easier to compare and contrast embeddings. For example, two texts that share a similar subject matter or sentiment should have similar embeddings, which can be identified through mathematical comparison techniques such as cosine similarity. For more on how and why you should use embeddings, refer to the Embeddings guide.
The Gemini Embedding Model API supports various task types:
| Task Type | Description |
|-------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
| "`retrieval_query`" | Specifies the given text is a query in a search/retrieval setting. |
| "`retrieval_document`" | Specifies the given text is a document in a search/retrieval setting. Using this task type requires a title but is automatically proided by Embeddings API |
| "`semantic_similarity`" | Specifies the given text will be used for Semantic Textual Similarity (STS). |
| "`classification`" | Specifies that the embeddings will be used for classification. |
| "`clusering`" | Specifies that the embeddings will be used for clustering. |
Usage Example:
```python
import lancedb
import pandas as pd
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
model = get_registry().get("gemini-text").create()
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```

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# Huggingface embedding models
We offer support for all huggingface models (which can be loaded via [transformers](https://huggingface.co/docs/transformers/en/index) library). The default model is `colbert-ir/colbertv2.0` which also has its own special callout - `registry.get("colbert")`
Example usage -
```python
import lancedb
import pandas as pd
from lancedb.embeddings import get_registry
from lancedb.pydantic import LanceModel, Vector
model = get_registry().get("huggingface").create(name='facebook/bart-base')
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hi hello sayonara", "goodbye world"]})
table = db.create_table("greets", schema=Words)
table.add(df)
query = "old greeting"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```

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# IBM watsonx.ai Embeddings
Generate text embeddings using IBM's watsonx.ai platform.
## Supported Models
You can find a list of supported models at [IBM watsonx.ai Documentation](https://dataplatform.cloud.ibm.com/docs/content/wsj/analyze-data/fm-models-embed.html?context=wx). The currently supported model names are:
- `ibm/slate-125m-english-rtrvr`
- `ibm/slate-30m-english-rtrvr`
- `sentence-transformers/all-minilm-l12-v2`
- `intfloat/multilingual-e5-large`
## Parameters
The following parameters can be passed to the `create` method:
| Parameter | Type | Default Value | Description |
|------------|----------|----------------------------------|-----------------------------------------------------------|
| name | str | "ibm/slate-125m-english-rtrvr" | The model ID of the watsonx.ai model to use |
| api_key | str | None | Optional IBM Cloud API key (or set `WATSONX_API_KEY`) |
| project_id | str | None | Optional watsonx project ID (or set `WATSONX_PROJECT_ID`) |
| url | str | None | Optional custom URL for the watsonx.ai instance |
| params | dict | None | Optional additional parameters for the embedding model |
## Usage Example
First, the watsonx.ai library is an optional dependency, so must be installed seperately:
```
pip install ibm-watsonx-ai
```
Optionally set environment variables (if not passing credentials to `create` directly):
```sh
export WATSONX_API_KEY="YOUR_WATSONX_API_KEY"
export WATSONX_PROJECT_ID="YOUR_WATSONX_PROJECT_ID"
```
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
watsonx_embed = EmbeddingFunctionRegistry
.get_instance()
.get("watsonx")
.create(
name="ibm/slate-125m-english-rtrvr",
# Uncomment and set these if not using environment variables
# api_key="your_api_key_here",
# project_id="your_project_id_here",
# url="your_watsonx_url_here",
# params={...},
)
class TextModel(LanceModel):
text: str = watsonx_embed.SourceField()
vector: Vector(watsonx_embed.ndims()) = watsonx_embed.VectorField()
data = [
{"text": "hello world"},
{"text": "goodbye world"},
]
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("watsonx_test", schema=TextModel, mode="overwrite")
tbl.add(data)
rs = tbl.search("hello").limit(1).to_pandas()
print(rs)
```

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@@ -0,0 +1,50 @@
# Instructor Embeddings
[Instructor](https://instructor-embedding.github.io/) is an instruction-finetuned text embedding model that can generate text embeddings tailored to any task (e.g. classification, retrieval, clustering, text evaluation, etc.) and domains (e.g. science, finance, etc.) by simply providing the task instruction, without any finetuning.
If you want to calculate customized embeddings for specific sentences, you can follow the unified template to write instructions.
!!! info
Represent the `domain` `text_type` for `task_objective`:
* `domain` is optional, and it specifies the domain of the text, e.g. science, finance, medicine, etc.
* `text_type` is required, and it specifies the encoding unit, e.g. sentence, document, paragraph, etc.
* `task_objective` is optional, and it specifies the objective of embedding, e.g. retrieve a document, classify the sentence, etc.
More information about the model can be found at the [source URL](https://github.com/xlang-ai/instructor-embedding).
| Argument | Type | Default | Description |
|---|---|---|---|
| `name` | `str` | "hkunlp/instructor-base" | The name of the model to use |
| `batch_size` | `int` | `32` | The batch size to use when generating embeddings |
| `device` | `str` | `"cpu"` | The device to use when generating embeddings |
| `show_progress_bar` | `bool` | `True` | Whether to show a progress bar when generating embeddings |
| `normalize_embeddings` | `bool` | `True` | Whether to normalize the embeddings |
| `quantize` | `bool` | `False` | Whether to quantize the model |
| `source_instruction` | `str` | `"represent the docuement for retreival"` | The instruction for the source column |
| `query_instruction` | `str` | `"represent the document for retreiving the most similar documents"` | The instruction for the query |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry, InstuctorEmbeddingFunction
instructor = get_registry().get("instructor").create(
source_instruction="represent the docuement for retreival",
query_instruction="represent the document for retreiving the most similar documents"
)
class Schema(LanceModel):
vector: Vector(instructor.ndims()) = instructor.VectorField()
text: str = instructor.SourceField()
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=Schema, mode="overwrite")
texts = [{"text": "Capitalism has been dominant in the Western world since the end of feudalism, but most feel[who?] that..."},
{"text": "The disparate impact theory is especially controversial under the Fair Housing Act because the Act..."},
{"text": "Disparate impact in United States labor law refers to practices in employment, housing, and other areas that.."}]
tbl.add(texts)
```

View File

@@ -0,0 +1,39 @@
# Jina Embeddings
Jina embeddings are used to generate embeddings for text and image data.
You also need to set the `JINA_API_KEY` environment variable to use the Jina API.
You can find a list of supported models under [https://jina.ai/embeddings/](https://jina.ai/embeddings/)
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"jina-clip-v1"` | The model ID of the jina model to use |
Usage Example:
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
os.environ['JINA_API_KEY'] = 'jina_*'
jina_embed = EmbeddingFunctionRegistry.get_instance().get("jina").create(name="jina-embeddings-v2-base-en")
class TextModel(LanceModel):
text: str = jina_embed.SourceField()
vector: Vector(jina_embed.ndims()) = jina_embed.VectorField()
data = [{"text": "hello world"},
{"text": "goodbye world"}]
db = lancedb.connect("~/.lancedb-2")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(data)
```

View File

@@ -0,0 +1,37 @@
# Ollama embeddings
Generate embeddings via the [ollama](https://github.com/ollama/ollama-python) python library. More details:
- [Ollama docs on embeddings](https://github.com/ollama/ollama/blob/main/docs/api.md#generate-embeddings)
- [Ollama blog on embeddings](https://ollama.com/blog/embedding-models)
| Parameter | Type | Default Value | Description |
|------------------------|----------------------------|--------------------------|------------------------------------------------------------------------------------------------------------------------------------------------|
| `name` | `str` | `nomic-embed-text` | The name of the model. |
| `host` | `str` | `http://localhost:11434` | The Ollama host to connect to. |
| `options` | `ollama.Options` or `dict` | `None` | Additional model parameters listed in the documentation for the Modelfile such as `temperature`. |
| `keep_alive` | `float` or `str` | `"5m"` | Controls how long the model will stay loaded into memory following the request. |
| `ollama_client_kwargs` | `dict` | `{}` | kwargs that can be past to the `ollama.Client`. |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("ollama").create(name="nomic-embed-text")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add([
{"text": "hello world"},
{"text": "goodbye world"}
])
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```

View File

@@ -0,0 +1,34 @@
# OpenAI embeddings
LanceDB registers the OpenAI embeddings function in the registry by default, as `openai`. Below are the parameters that you can customize when creating the instances:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"text-embedding-ada-002"` | The name of the model. |
| `dim` | `int` | Model default | For OpenAI's newer text-embedding-3 model, we can specify a dimensionality that is smaller than the 1536 size. This feature supports it |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```

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@@ -0,0 +1,174 @@
# Sentence transformers
Allows you to set parameters when registering a `sentence-transformers` object.
!!! info
Sentence transformer embeddings are normalized by default. It is recommended to use normalized embeddings for similarity search.
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `all-MiniLM-L6-v2` | The name of the model |
| `device` | `str` | `cpu` | The device to run the model on (can be `cpu` or `gpu`) |
| `normalize` | `bool` | `True` | Whether to normalize the input text before feeding it to the model |
| `trust_remote_code` | `bool` | `False` | Whether to trust and execute remote code from the model's Huggingface repository |
??? "Check out available sentence-transformer models here!"
```markdown
- sentence-transformers/all-MiniLM-L12-v2
- sentence-transformers/paraphrase-mpnet-base-v2
- sentence-transformers/gtr-t5-base
- sentence-transformers/LaBSE
- sentence-transformers/all-MiniLM-L6-v2
- sentence-transformers/bert-base-nli-max-tokens
- sentence-transformers/bert-base-nli-mean-tokens
- sentence-transformers/bert-base-nli-stsb-mean-tokens
- sentence-transformers/bert-base-wikipedia-sections-mean-tokens
- sentence-transformers/bert-large-nli-cls-token
- sentence-transformers/bert-large-nli-max-tokens
- sentence-transformers/bert-large-nli-mean-tokens
- sentence-transformers/bert-large-nli-stsb-mean-tokens
- sentence-transformers/distilbert-base-nli-max-tokens
- sentence-transformers/distilbert-base-nli-mean-tokens
- sentence-transformers/distilbert-base-nli-stsb-mean-tokens
- sentence-transformers/distilroberta-base-msmarco-v1
- sentence-transformers/distilroberta-base-msmarco-v2
- sentence-transformers/nli-bert-base-cls-pooling
- sentence-transformers/nli-bert-base-max-pooling
- sentence-transformers/nli-bert-base
- sentence-transformers/nli-bert-large-cls-pooling
- sentence-transformers/nli-bert-large-max-pooling
- sentence-transformers/nli-bert-large
- sentence-transformers/nli-distilbert-base-max-pooling
- sentence-transformers/nli-distilbert-base
- sentence-transformers/nli-roberta-base
- sentence-transformers/nli-roberta-large
- sentence-transformers/roberta-base-nli-mean-tokens
- sentence-transformers/roberta-base-nli-stsb-mean-tokens
- sentence-transformers/roberta-large-nli-mean-tokens
- sentence-transformers/roberta-large-nli-stsb-mean-tokens
- sentence-transformers/stsb-bert-base
- sentence-transformers/stsb-bert-large
- sentence-transformers/stsb-distilbert-base
- sentence-transformers/stsb-roberta-base
- sentence-transformers/stsb-roberta-large
- sentence-transformers/xlm-r-100langs-bert-base-nli-mean-tokens
- sentence-transformers/xlm-r-100langs-bert-base-nli-stsb-mean-tokens
- sentence-transformers/xlm-r-base-en-ko-nli-ststb
- sentence-transformers/xlm-r-bert-base-nli-mean-tokens
- sentence-transformers/xlm-r-bert-base-nli-stsb-mean-tokens
- sentence-transformers/xlm-r-large-en-ko-nli-ststb
- sentence-transformers/bert-base-nli-cls-token
- sentence-transformers/all-distilroberta-v1
- sentence-transformers/multi-qa-MiniLM-L6-dot-v1
- sentence-transformers/multi-qa-distilbert-cos-v1
- sentence-transformers/multi-qa-distilbert-dot-v1
- sentence-transformers/multi-qa-mpnet-base-cos-v1
- sentence-transformers/multi-qa-mpnet-base-dot-v1
- sentence-transformers/nli-distilroberta-base-v2
- sentence-transformers/all-MiniLM-L6-v1
- sentence-transformers/all-mpnet-base-v1
- sentence-transformers/all-mpnet-base-v2
- sentence-transformers/all-roberta-large-v1
- sentence-transformers/allenai-specter
- sentence-transformers/average_word_embeddings_glove.6B.300d
- sentence-transformers/average_word_embeddings_glove.840B.300d
- sentence-transformers/average_word_embeddings_komninos
- sentence-transformers/average_word_embeddings_levy_dependency
- sentence-transformers/clip-ViT-B-32-multilingual-v1
- sentence-transformers/clip-ViT-B-32
- sentence-transformers/distilbert-base-nli-stsb-quora-ranking
- sentence-transformers/distilbert-multilingual-nli-stsb-quora-ranking
- sentence-transformers/distilroberta-base-paraphrase-v1
- sentence-transformers/distiluse-base-multilingual-cased-v1
- sentence-transformers/distiluse-base-multilingual-cased-v2
- sentence-transformers/distiluse-base-multilingual-cased
- sentence-transformers/facebook-dpr-ctx_encoder-multiset-base
- sentence-transformers/facebook-dpr-ctx_encoder-single-nq-base
- sentence-transformers/facebook-dpr-question_encoder-multiset-base
- sentence-transformers/facebook-dpr-question_encoder-single-nq-base
- sentence-transformers/gtr-t5-large
- sentence-transformers/gtr-t5-xl
- sentence-transformers/gtr-t5-xxl
- sentence-transformers/msmarco-MiniLM-L-12-v3
- sentence-transformers/msmarco-MiniLM-L-6-v3
- sentence-transformers/msmarco-MiniLM-L12-cos-v5
- sentence-transformers/msmarco-MiniLM-L6-cos-v5
- sentence-transformers/msmarco-bert-base-dot-v5
- sentence-transformers/msmarco-bert-co-condensor
- sentence-transformers/msmarco-distilbert-base-dot-prod-v3
- sentence-transformers/msmarco-distilbert-base-tas-b
- sentence-transformers/msmarco-distilbert-base-v2
- sentence-transformers/msmarco-distilbert-base-v3
- sentence-transformers/msmarco-distilbert-base-v4
- sentence-transformers/msmarco-distilbert-cos-v5
- sentence-transformers/msmarco-distilbert-dot-v5
- sentence-transformers/msmarco-distilbert-multilingual-en-de-v2-tmp-lng-aligned
- sentence-transformers/msmarco-distilbert-multilingual-en-de-v2-tmp-trained-scratch
- sentence-transformers/msmarco-distilroberta-base-v2
- sentence-transformers/msmarco-roberta-base-ance-firstp
- sentence-transformers/msmarco-roberta-base-v2
- sentence-transformers/msmarco-roberta-base-v3
- sentence-transformers/multi-qa-MiniLM-L6-cos-v1
- sentence-transformers/nli-mpnet-base-v2
- sentence-transformers/nli-roberta-base-v2
- sentence-transformers/nq-distilbert-base-v1
- sentence-transformers/paraphrase-MiniLM-L12-v2
- sentence-transformers/paraphrase-MiniLM-L3-v2
- sentence-transformers/paraphrase-MiniLM-L6-v2
- sentence-transformers/paraphrase-TinyBERT-L6-v2
- sentence-transformers/paraphrase-albert-base-v2
- sentence-transformers/paraphrase-albert-small-v2
- sentence-transformers/paraphrase-distilroberta-base-v1
- sentence-transformers/paraphrase-distilroberta-base-v2
- sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2
- sentence-transformers/paraphrase-multilingual-mpnet-base-v2
- sentence-transformers/paraphrase-xlm-r-multilingual-v1
- sentence-transformers/quora-distilbert-base
- sentence-transformers/quora-distilbert-multilingual
- sentence-transformers/sentence-t5-base
- sentence-transformers/sentence-t5-large
- sentence-transformers/sentence-t5-xxl
- sentence-transformers/sentence-t5-xl
- sentence-transformers/stsb-distilroberta-base-v2
- sentence-transformers/stsb-mpnet-base-v2
- sentence-transformers/stsb-roberta-base-v2
- sentence-transformers/stsb-xlm-r-multilingual
- sentence-transformers/xlm-r-distilroberta-base-paraphrase-v1
- sentence-transformers/clip-ViT-L-14
- sentence-transformers/clip-ViT-B-16
- sentence-transformers/use-cmlm-multilingual
- sentence-transformers/all-MiniLM-L12-v1
```
!!! info
You can also load many other model architectures from the library. For example models from sources such as BAAI, nomic, salesforce research, etc.
See this HF hub page for all [supported models](https://huggingface.co/models?library=sentence-transformers).
!!! note "BAAI Embeddings example"
Here is an example that uses BAAI embedding model from the HuggingFace Hub [supported models](https://huggingface.co/models?library=sentence-transformers)
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
Visit sentence-transformers [HuggingFace HUB](https://huggingface.co/sentence-transformers) page for more information on the available models.

View File

@@ -15,198 +15,226 @@ There is another optional layer of abstraction available: `TextEmbeddingFunction
Let's implement `SentenceTransformerEmbeddings` class. All you need to do is implement the `generate_embeddings()` and `ndims` function to handle the input types you expect and register the class in the global `EmbeddingFunctionRegistry`
```python
from lancedb.embeddings import register
from lancedb.util import attempt_import_or_raise
@register("sentence-transformers")
class SentenceTransformerEmbeddings(TextEmbeddingFunction):
name: str = "all-MiniLM-L6-v2"
# set more default instance vars like device, etc.
=== "Python"
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._ndims = None
def generate_embeddings(self, texts):
return self._embedding_model().encode(list(texts), ...).tolist()
```python
from lancedb.embeddings import register
from lancedb.util import attempt_import_or_raise
def ndims(self):
if self._ndims is None:
self._ndims = len(self.generate_embeddings("foo")[0])
return self._ndims
@register("sentence-transformers")
class SentenceTransformerEmbeddings(TextEmbeddingFunction):
name: str = "all-MiniLM-L6-v2"
# set more default instance vars like device, etc.
@cached(cache={})
def _embedding_model(self):
return sentence_transformers.SentenceTransformer(name)
```
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._ndims = None
This is a stripped down version of our implementation of `SentenceTransformerEmbeddings` that removes certain optimizations and defaul settings.
def generate_embeddings(self, texts):
return self._embedding_model().encode(list(texts), ...).tolist()
def ndims(self):
if self._ndims is None:
self._ndims = len(self.generate_embeddings("foo")[0])
return self._ndims
@cached(cache={})
def _embedding_model(self):
return sentence_transformers.SentenceTransformer(name)
```
=== "TypeScript"
```ts
--8<--- "nodejs/examples/custom_embedding_function.ts:imports"
--8<--- "nodejs/examples/custom_embedding_function.ts:embedding_impl"
```
This is a stripped down version of our implementation of `SentenceTransformerEmbeddings` that removes certain optimizations and default settings.
Now you can use this embedding function to create your table schema and that's it! you can then ingest data and run queries without manually vectorizing the inputs.
```python
from lancedb.pydantic import LanceModel, Vector
=== "Python"
registry = EmbeddingFunctionRegistry.get_instance()
stransformer = registry.get("sentence-transformers").create()
```python
from lancedb.pydantic import LanceModel, Vector
class TextModelSchema(LanceModel):
vector: Vector(stransformer.ndims) = stransformer.VectorField()
text: str = stransformer.SourceField()
registry = EmbeddingFunctionRegistry.get_instance()
stransformer = registry.get("sentence-transformers").create()
tbl = db.create_table("table", schema=TextModelSchema)
class TextModelSchema(LanceModel):
vector: Vector(stransformer.ndims) = stransformer.VectorField()
text: str = stransformer.SourceField()
tbl.add(pd.DataFrame({"text": ["halo", "world"]}))
result = tbl.search("world").limit(5)
```
tbl = db.create_table("table", schema=TextModelSchema)
NOTE:
tbl.add(pd.DataFrame({"text": ["halo", "world"]}))
result = tbl.search("world").limit(5)
```
You can always implement the `EmbeddingFunction` interface directly if you want or need to, `TextEmbeddingFunction` just makes it much simpler and faster for you to do so, by setting up the boiler plat for text-specific use case
=== "TypeScript"
```ts
--8<--- "nodejs/examples/custom_embedding_function.ts:call_custom_function"
```
!!! note
You can always implement the `EmbeddingFunction` interface directly if you want or need to, `TextEmbeddingFunction` just makes it much simpler and faster for you to do so, by setting up the boiler plat for text-specific use case
## Multi-modal embedding function example
You can also use the `EmbeddingFunction` interface to implement more complex workflows such as multi-modal embedding function support. LanceDB implements `OpenClipEmeddingFunction` class that suppports multi-modal seach. Here's the implementation that you can use as a reference to build your own multi-modal embedding functions.
You can also use the `EmbeddingFunction` interface to implement more complex workflows such as multi-modal embedding function support.
```python
@register("open-clip")
class OpenClipEmbeddings(EmbeddingFunction):
name: str = "ViT-B-32"
pretrained: str = "laion2b_s34b_b79k"
device: str = "cpu"
batch_size: int = 64
normalize: bool = True
_model = PrivateAttr()
_preprocess = PrivateAttr()
_tokenizer = PrivateAttr()
=== "Python"
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
open_clip = attempt_import_or_raise("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
model, _, preprocess = open_clip.create_model_and_transforms(
self.name, pretrained=self.pretrained
)
model.to(self.device)
self._model, self._preprocess = model, preprocess
self._tokenizer = open_clip.get_tokenizer(self.name)
self._ndims = None
LanceDB implements `OpenClipEmeddingFunction` class that suppports multi-modal seach. Here's the implementation that you can use as a reference to build your own multi-modal embedding functions.
def ndims(self):
if self._ndims is None:
self._ndims = self.generate_text_embeddings("foo").shape[0]
return self._ndims
```python
@register("open-clip")
class OpenClipEmbeddings(EmbeddingFunction):
name: str = "ViT-B-32"
pretrained: str = "laion2b_s34b_b79k"
device: str = "cpu"
batch_size: int = 64
normalize: bool = True
_model = PrivateAttr()
_preprocess = PrivateAttr()
_tokenizer = PrivateAttr()
def compute_query_embeddings(
self, query: Union[str, "PIL.Image.Image"], *args, **kwargs
) -> List[np.ndarray]:
"""
Compute the embeddings for a given user query
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
open_clip = attempt_import_or_raise("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
model, _, preprocess = open_clip.create_model_and_transforms(
self.name, pretrained=self.pretrained
)
model.to(self.device)
self._model, self._preprocess = model, preprocess
self._tokenizer = open_clip.get_tokenizer(self.name)
self._ndims = None
Parameters
----------
query : Union[str, PIL.Image.Image]
The query to embed. A query can be either text or an image.
"""
if isinstance(query, str):
return [self.generate_text_embeddings(query)]
else:
def ndims(self):
if self._ndims is None:
self._ndims = self.generate_text_embeddings("foo").shape[0]
return self._ndims
def compute_query_embeddings(
self, query: Union[str, "PIL.Image.Image"], *args, **kwargs
) -> List[np.ndarray]:
"""
Compute the embeddings for a given user query
Parameters
----------
query : Union[str, PIL.Image.Image]
The query to embed. A query can be either text or an image.
"""
if isinstance(query, str):
return [self.generate_text_embeddings(query)]
else:
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(query, PIL.Image.Image):
return [self.generate_image_embedding(query)]
else:
raise TypeError("OpenClip supports str or PIL Image as query")
def generate_text_embeddings(self, text: str) -> np.ndarray:
torch = attempt_import_or_raise("torch")
text = self.sanitize_input(text)
text = self._tokenizer(text)
text.to(self.device)
with torch.no_grad():
text_features = self._model.encode_text(text.to(self.device))
if self.normalize:
text_features /= text_features.norm(dim=-1, keepdim=True)
return text_features.cpu().numpy().squeeze()
def sanitize_input(self, images: IMAGES) -> Union[List[bytes], np.ndarray]:
"""
Sanitize the input to the embedding function.
"""
if isinstance(images, (str, bytes)):
images = [images]
elif isinstance(images, pa.Array):
images = images.to_pylist()
elif isinstance(images, pa.ChunkedArray):
images = images.combine_chunks().to_pylist()
return images
def compute_source_embeddings(
self, images: IMAGES, *args, **kwargs
) -> List[np.array]:
"""
Get the embeddings for the given images
"""
images = self.sanitize_input(images)
embeddings = []
for i in range(0, len(images), self.batch_size):
j = min(i + self.batch_size, len(images))
batch = images[i:j]
embeddings.extend(self._parallel_get(batch))
return embeddings
def _parallel_get(self, images: Union[List[str], List[bytes]]) -> List[np.ndarray]:
"""
Issue concurrent requests to retrieve the image data
"""
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = [
executor.submit(self.generate_image_embedding, image)
for image in images
]
return [future.result() for future in futures]
def generate_image_embedding(
self, image: Union[str, bytes, "PIL.Image.Image"]
) -> np.ndarray:
"""
Generate the embedding for a single image
Parameters
----------
image : Union[str, bytes, PIL.Image.Image]
The image to embed. If the image is a str, it is treated as a uri.
If the image is bytes, it is treated as the raw image bytes.
"""
torch = attempt_import_or_raise("torch")
# TODO handle retry and errors for https
image = self._to_pil(image)
image = self._preprocess(image).unsqueeze(0)
with torch.no_grad():
return self._encode_and_normalize_image(image)
def _to_pil(self, image: Union[str, bytes]):
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(query, PIL.Image.Image):
return [self.generate_image_embedding(query)]
else:
raise TypeError("OpenClip supports str or PIL Image as query")
if isinstance(image, bytes):
return PIL.Image.open(io.BytesIO(image))
if isinstance(image, PIL.Image.Image):
return image
elif isinstance(image, str):
parsed = urlparse.urlparse(image)
# TODO handle drive letter on windows.
if parsed.scheme == "file":
return PIL.Image.open(parsed.path)
elif parsed.scheme == "":
return PIL.Image.open(image if os.name == "nt" else parsed.path)
elif parsed.scheme.startswith("http"):
return PIL.Image.open(io.BytesIO(url_retrieve(image)))
else:
raise NotImplementedError("Only local and http(s) urls are supported")
def generate_text_embeddings(self, text: str) -> np.ndarray:
torch = attempt_import_or_raise("torch")
text = self.sanitize_input(text)
text = self._tokenizer(text)
text.to(self.device)
with torch.no_grad():
text_features = self._model.encode_text(text.to(self.device))
def _encode_and_normalize_image(self, image_tensor: "torch.Tensor"):
"""
encode a single image tensor and optionally normalize the output
"""
image_features = self._model.encode_image(image_tensor)
if self.normalize:
text_features /= text_features.norm(dim=-1, keepdim=True)
return text_features.cpu().numpy().squeeze()
image_features /= image_features.norm(dim=-1, keepdim=True)
return image_features.cpu().numpy().squeeze()
```
def sanitize_input(self, images: IMAGES) -> Union[List[bytes], np.ndarray]:
"""
Sanitize the input to the embedding function.
"""
if isinstance(images, (str, bytes)):
images = [images]
elif isinstance(images, pa.Array):
images = images.to_pylist()
elif isinstance(images, pa.ChunkedArray):
images = images.combine_chunks().to_pylist()
return images
=== "TypeScript"
def compute_source_embeddings(
self, images: IMAGES, *args, **kwargs
) -> List[np.array]:
"""
Get the embeddings for the given images
"""
images = self.sanitize_input(images)
embeddings = []
for i in range(0, len(images), self.batch_size):
j = min(i + self.batch_size, len(images))
batch = images[i:j]
embeddings.extend(self._parallel_get(batch))
return embeddings
def _parallel_get(self, images: Union[List[str], List[bytes]]) -> List[np.ndarray]:
"""
Issue concurrent requests to retrieve the image data
"""
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = [
executor.submit(self.generate_image_embedding, image)
for image in images
]
return [future.result() for future in futures]
def generate_image_embedding(
self, image: Union[str, bytes, "PIL.Image.Image"]
) -> np.ndarray:
"""
Generate the embedding for a single image
Parameters
----------
image : Union[str, bytes, PIL.Image.Image]
The image to embed. If the image is a str, it is treated as a uri.
If the image is bytes, it is treated as the raw image bytes.
"""
torch = attempt_import_or_raise("torch")
# TODO handle retry and errors for https
image = self._to_pil(image)
image = self._preprocess(image).unsqueeze(0)
with torch.no_grad():
return self._encode_and_normalize_image(image)
def _to_pil(self, image: Union[str, bytes]):
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(image, bytes):
return PIL.Image.open(io.BytesIO(image))
if isinstance(image, PIL.Image.Image):
return image
elif isinstance(image, str):
parsed = urlparse.urlparse(image)
# TODO handle drive letter on windows.
if parsed.scheme == "file":
return PIL.Image.open(parsed.path)
elif parsed.scheme == "":
return PIL.Image.open(image if os.name == "nt" else parsed.path)
elif parsed.scheme.startswith("http"):
return PIL.Image.open(io.BytesIO(url_retrieve(image)))
else:
raise NotImplementedError("Only local and http(s) urls are supported")
def _encode_and_normalize_image(self, image_tensor: "torch.Tensor"):
"""
encode a single image tensor and optionally normalize the output
"""
image_features = self._model.encode_image(image_tensor)
if self.normalize:
image_features /= image_features.norm(dim=-1, keepdim=True)
return image_features.cpu().numpy().squeeze()
```
Coming Soon! See this [issue](https://github.com/lancedb/lancedb/issues/1482) to track the status!

View File

@@ -1,632 +1,84 @@
There are various embedding functions available out of the box with LanceDB to manage your embeddings implicitly. We're actively working on adding other popular embedding APIs and models.
# 📚 Available Embedding Models
## Text embedding functions
Contains the text embedding functions registered by default.
There are various embedding functions available out of the box with LanceDB to manage your embeddings implicitly. We're actively working on adding other popular embedding APIs and models. 🚀
* Embedding functions have an inbuilt rate limit handler wrapper for source and query embedding function calls that retry with exponential backoff.
* Each `EmbeddingFunction` implementation automatically takes `max_retries` as an argument which has the default value of 7.
Before jumping on the list of available models, let's understand how to get an embedding model initialized and configured to use in our code:
### Sentence transformers
Allows you to set parameters when registering a `sentence-transformers` object.
!!! info
Sentence transformer embeddings are normalized by default. It is recommended to use normalized embeddings for similarity search.
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `all-MiniLM-L6-v2` | The name of the model |
| `device` | `str` | `cpu` | The device to run the model on (can be `cpu` or `gpu`) |
| `normalize` | `bool` | `True` | Whether to normalize the input text before feeding it to the model |
??? "Check out available sentence-transformer models here!"
```markdown
- sentence-transformers/all-MiniLM-L12-v2
- sentence-transformers/paraphrase-mpnet-base-v2
- sentence-transformers/gtr-t5-base
- sentence-transformers/LaBSE
- sentence-transformers/all-MiniLM-L6-v2
- sentence-transformers/bert-base-nli-max-tokens
- sentence-transformers/bert-base-nli-mean-tokens
- sentence-transformers/bert-base-nli-stsb-mean-tokens
- sentence-transformers/bert-base-wikipedia-sections-mean-tokens
- sentence-transformers/bert-large-nli-cls-token
- sentence-transformers/bert-large-nli-max-tokens
- sentence-transformers/bert-large-nli-mean-tokens
- sentence-transformers/bert-large-nli-stsb-mean-tokens
- sentence-transformers/distilbert-base-nli-max-tokens
- sentence-transformers/distilbert-base-nli-mean-tokens
- sentence-transformers/distilbert-base-nli-stsb-mean-tokens
- sentence-transformers/distilroberta-base-msmarco-v1
- sentence-transformers/distilroberta-base-msmarco-v2
- sentence-transformers/nli-bert-base-cls-pooling
- sentence-transformers/nli-bert-base-max-pooling
- sentence-transformers/nli-bert-base
- sentence-transformers/nli-bert-large-cls-pooling
- sentence-transformers/nli-bert-large-max-pooling
- sentence-transformers/nli-bert-large
- sentence-transformers/nli-distilbert-base-max-pooling
- sentence-transformers/nli-distilbert-base
- sentence-transformers/nli-roberta-base
- sentence-transformers/nli-roberta-large
- sentence-transformers/roberta-base-nli-mean-tokens
- sentence-transformers/roberta-base-nli-stsb-mean-tokens
- sentence-transformers/roberta-large-nli-mean-tokens
- sentence-transformers/roberta-large-nli-stsb-mean-tokens
- sentence-transformers/stsb-bert-base
- sentence-transformers/stsb-bert-large
- sentence-transformers/stsb-distilbert-base
- sentence-transformers/stsb-roberta-base
- sentence-transformers/stsb-roberta-large
- sentence-transformers/xlm-r-100langs-bert-base-nli-mean-tokens
- sentence-transformers/xlm-r-100langs-bert-base-nli-stsb-mean-tokens
- sentence-transformers/xlm-r-base-en-ko-nli-ststb
- sentence-transformers/xlm-r-bert-base-nli-mean-tokens
- sentence-transformers/xlm-r-bert-base-nli-stsb-mean-tokens
- sentence-transformers/xlm-r-large-en-ko-nli-ststb
- sentence-transformers/bert-base-nli-cls-token
- sentence-transformers/all-distilroberta-v1
- sentence-transformers/multi-qa-MiniLM-L6-dot-v1
- sentence-transformers/multi-qa-distilbert-cos-v1
- sentence-transformers/multi-qa-distilbert-dot-v1
- sentence-transformers/multi-qa-mpnet-base-cos-v1
- sentence-transformers/multi-qa-mpnet-base-dot-v1
- sentence-transformers/nli-distilroberta-base-v2
- sentence-transformers/all-MiniLM-L6-v1
- sentence-transformers/all-mpnet-base-v1
- sentence-transformers/all-mpnet-base-v2
- sentence-transformers/all-roberta-large-v1
- sentence-transformers/allenai-specter
- sentence-transformers/average_word_embeddings_glove.6B.300d
- sentence-transformers/average_word_embeddings_glove.840B.300d
- sentence-transformers/average_word_embeddings_komninos
- sentence-transformers/average_word_embeddings_levy_dependency
- sentence-transformers/clip-ViT-B-32-multilingual-v1
- sentence-transformers/clip-ViT-B-32
- sentence-transformers/distilbert-base-nli-stsb-quora-ranking
- sentence-transformers/distilbert-multilingual-nli-stsb-quora-ranking
- sentence-transformers/distilroberta-base-paraphrase-v1
- sentence-transformers/distiluse-base-multilingual-cased-v1
- sentence-transformers/distiluse-base-multilingual-cased-v2
- sentence-transformers/distiluse-base-multilingual-cased
- sentence-transformers/facebook-dpr-ctx_encoder-multiset-base
- sentence-transformers/facebook-dpr-ctx_encoder-single-nq-base
- sentence-transformers/facebook-dpr-question_encoder-multiset-base
- sentence-transformers/facebook-dpr-question_encoder-single-nq-base
- sentence-transformers/gtr-t5-large
- sentence-transformers/gtr-t5-xl
- sentence-transformers/gtr-t5-xxl
- sentence-transformers/msmarco-MiniLM-L-12-v3
- sentence-transformers/msmarco-MiniLM-L-6-v3
- sentence-transformers/msmarco-MiniLM-L12-cos-v5
- sentence-transformers/msmarco-MiniLM-L6-cos-v5
- sentence-transformers/msmarco-bert-base-dot-v5
- sentence-transformers/msmarco-bert-co-condensor
- sentence-transformers/msmarco-distilbert-base-dot-prod-v3
- sentence-transformers/msmarco-distilbert-base-tas-b
- sentence-transformers/msmarco-distilbert-base-v2
- sentence-transformers/msmarco-distilbert-base-v3
- sentence-transformers/msmarco-distilbert-base-v4
- sentence-transformers/msmarco-distilbert-cos-v5
- sentence-transformers/msmarco-distilbert-dot-v5
- sentence-transformers/msmarco-distilbert-multilingual-en-de-v2-tmp-lng-aligned
- sentence-transformers/msmarco-distilbert-multilingual-en-de-v2-tmp-trained-scratch
- sentence-transformers/msmarco-distilroberta-base-v2
- sentence-transformers/msmarco-roberta-base-ance-firstp
- sentence-transformers/msmarco-roberta-base-v2
- sentence-transformers/msmarco-roberta-base-v3
- sentence-transformers/multi-qa-MiniLM-L6-cos-v1
- sentence-transformers/nli-mpnet-base-v2
- sentence-transformers/nli-roberta-base-v2
- sentence-transformers/nq-distilbert-base-v1
- sentence-transformers/paraphrase-MiniLM-L12-v2
- sentence-transformers/paraphrase-MiniLM-L3-v2
- sentence-transformers/paraphrase-MiniLM-L6-v2
- sentence-transformers/paraphrase-TinyBERT-L6-v2
- sentence-transformers/paraphrase-albert-base-v2
- sentence-transformers/paraphrase-albert-small-v2
- sentence-transformers/paraphrase-distilroberta-base-v1
- sentence-transformers/paraphrase-distilroberta-base-v2
- sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2
- sentence-transformers/paraphrase-multilingual-mpnet-base-v2
- sentence-transformers/paraphrase-xlm-r-multilingual-v1
- sentence-transformers/quora-distilbert-base
- sentence-transformers/quora-distilbert-multilingual
- sentence-transformers/sentence-t5-base
- sentence-transformers/sentence-t5-large
- sentence-transformers/sentence-t5-xxl
- sentence-transformers/sentence-t5-xl
- sentence-transformers/stsb-distilroberta-base-v2
- sentence-transformers/stsb-mpnet-base-v2
- sentence-transformers/stsb-roberta-base-v2
- sentence-transformers/stsb-xlm-r-multilingual
- sentence-transformers/xlm-r-distilroberta-base-paraphrase-v1
- sentence-transformers/clip-ViT-L-14
- sentence-transformers/clip-ViT-B-16
- sentence-transformers/use-cmlm-multilingual
- sentence-transformers/all-MiniLM-L12-v1
```
!!! info
You can also load many other model architectures from the library. For example models from sources such as BAAI, nomic, salesforce research, etc.
See this HF hub page for all [supported models](https://huggingface.co/models?library=sentence-transformers).
!!! note "BAAI Embeddings example"
Here is an example that uses BAAI embedding model from the HuggingFace Hub [supported models](https://huggingface.co/models?library=sentence-transformers)
!!! example "Example usage"
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
Visit sentence-transformers [HuggingFace HUB](https://huggingface.co/sentence-transformers) page for more information on the available models.
### Huggingface embedding models
We offer support for all huggingface models (which can be loaded via [transformers](https://huggingface.co/docs/transformers/en/index) library). The default model is `colbert-ir/colbertv2.0` which also has its own special callout - `registry.get("colbert")`
Example usage -
```python
import lancedb
import pandas as pd
from lancedb.embeddings import get_registry
from lancedb.pydantic import LanceModel, Vector
model = get_registry().get("huggingface").create(name='facebook/bart-base')
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hi hello sayonara", "goodbye world"]})
table = db.create_table("greets", schema=Words)
table.add()
query = "old greeting"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
### Ollama embeddings
Generate embeddings via the [ollama](https://github.com/ollama/ollama-python) python library. More details:
- [Ollama docs on embeddings](https://github.com/ollama/ollama/blob/main/docs/api.md#generate-embeddings)
- [Ollama blog on embeddings](https://ollama.com/blog/embedding-models)
| Parameter | Type | Default Value | Description |
|------------------------|----------------------------|--------------------------|------------------------------------------------------------------------------------------------------------------------------------------------|
| `name` | `str` | `nomic-embed-text` | The name of the model. |
| `host` | `str` | `http://localhost:11434` | The Ollama host to connect to. |
| `options` | `ollama.Options` or `dict` | `None` | Additional model parameters listed in the documentation for the Modelfile such as `temperature`. |
| `keep_alive` | `float` or `str` | `"5m"` | Controls how long the model will stay loaded into memory following the request. |
| `ollama_client_kwargs` | `dict` | `{}` | kwargs that can be past to the `ollama.Client`. |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("ollama").create(name="nomic-embed-text")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add([
{"text": "hello world"},
{"text": "goodbye world"}
])
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
### OpenAI embeddings
LanceDB registers the OpenAI embeddings function in the registry by default, as `openai`. Below are the parameters that you can customize when creating the instances:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"text-embedding-ada-002"` | The name of the model. |
| `dim` | `int` | Model default | For OpenAI's newer text-embedding-3 model, we can specify a dimensionality that is smaller than the 1536 size. This feature supports it |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
### Instructor Embeddings
[Instructor](https://instructor-embedding.github.io/) is an instruction-finetuned text embedding model that can generate text embeddings tailored to any task (e.g. classification, retrieval, clustering, text evaluation, etc.) and domains (e.g. science, finance, etc.) by simply providing the task instruction, without any finetuning.
If you want to calculate customized embeddings for specific sentences, you can follow the unified template to write instructions.
!!! info
Represent the `domain` `text_type` for `task_objective`:
* `domain` is optional, and it specifies the domain of the text, e.g. science, finance, medicine, etc.
* `text_type` is required, and it specifies the encoding unit, e.g. sentence, document, paragraph, etc.
* `task_objective` is optional, and it specifies the objective of embedding, e.g. retrieve a document, classify the sentence, etc.
More information about the model can be found at the [source URL](https://github.com/xlang-ai/instructor-embedding).
| Argument | Type | Default | Description |
|---|---|---|---|
| `name` | `str` | "hkunlp/instructor-base" | The name of the model to use |
| `batch_size` | `int` | `32` | The batch size to use when generating embeddings |
| `device` | `str` | `"cpu"` | The device to use when generating embeddings |
| `show_progress_bar` | `bool` | `True` | Whether to show a progress bar when generating embeddings |
| `normalize_embeddings` | `bool` | `True` | Whether to normalize the embeddings |
| `quantize` | `bool` | `False` | Whether to quantize the model |
| `source_instruction` | `str` | `"represent the docuement for retreival"` | The instruction for the source column |
| `query_instruction` | `str` | `"represent the document for retreiving the most similar documents"` | The instruction for the query |
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry, InstuctorEmbeddingFunction
instructor = get_registry().get("instructor").create(
source_instruction="represent the docuement for retreival",
query_instruction="represent the document for retreiving the most similar documents"
)
class Schema(LanceModel):
vector: Vector(instructor.ndims()) = instructor.VectorField()
text: str = instructor.SourceField()
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=Schema, mode="overwrite")
texts = [{"text": "Capitalism has been dominant in the Western world since the end of feudalism, but most feel[who?] that..."},
{"text": "The disparate impact theory is especially controversial under the Fair Housing Act because the Act..."},
{"text": "Disparate impact in United States labor law refers to practices in employment, housing, and other areas that.."}]
tbl.add(texts)
```
### Gemini Embeddings
With Google's Gemini, you can represent text (words, sentences, and blocks of text) in a vectorized form, making it easier to compare and contrast embeddings. For example, two texts that share a similar subject matter or sentiment should have similar embeddings, which can be identified through mathematical comparison techniques such as cosine similarity. For more on how and why you should use embeddings, refer to the Embeddings guide.
The Gemini Embedding Model API supports various task types:
| Task Type | Description |
|-------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
| "`retrieval_query`" | Specifies the given text is a query in a search/retrieval setting. |
| "`retrieval_document`" | Specifies the given text is a document in a search/retrieval setting. Using this task type requires a title but is automatically proided by Embeddings API |
| "`semantic_similarity`" | Specifies the given text will be used for Semantic Textual Similarity (STS). |
| "`classification`" | Specifies that the embeddings will be used for classification. |
| "`clusering`" | Specifies that the embeddings will be used for clustering. |
Usage Example:
```python
import lancedb
import pandas as pd
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
model = get_registry().get("gemini-text").create()
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
### Cohere Embeddings
Using cohere API requires cohere package, which can be installed using `pip install cohere`. Cohere embeddings are used to generate embeddings for text data. The embeddings can be used for various tasks like semantic search, clustering, and classification.
You also need to set the `COHERE_API_KEY` environment variable to use the Cohere API.
Supported models are:
```
* embed-english-v3.0
* embed-multilingual-v3.0
* embed-english-light-v3.0
* embed-multilingual-light-v3.0
* embed-english-v2.0
* embed-english-light-v2.0
* embed-multilingual-v2.0
```
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"embed-english-v2.0"` | The model ID of the cohere model to use. Supported base models for Text Embeddings: embed-english-v3.0, embed-multilingual-v3.0, embed-english-light-v3.0, embed-multilingual-light-v3.0, embed-english-v2.0, embed-english-light-v2.0, embed-multilingual-v2.0 |
| `source_input_type` | `str` | `"search_document"` | The type of input data to be used for the source column. |
| `query_input_type` | `str` | `"search_query"` | The type of input data to be used for the query. |
Cohere supports following input types:
| Input Type | Description |
|-------------------------|---------------------------------------|
| "`search_document`" | Used for embeddings stored in a vector|
| | database for search use-cases. |
| "`search_query`" | Used for embeddings of search queries |
| | run against a vector DB |
| "`semantic_similarity`" | Specifies the given text will be used |
| | for Semantic Textual Similarity (STS) |
| "`classification`" | Used for embeddings passed through a |
| | text classifier. |
| "`clustering`" | Used for the embeddings run through a |
| | clustering algorithm |
Usage Example:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
cohere = EmbeddingFunctionRegistry
.get_instance()
.get("cohere")
.create(name="embed-multilingual-v2.0")
class TextModel(LanceModel):
text: str = cohere.SourceField()
vector: Vector(cohere.ndims()) = cohere.VectorField()
data = [ { "text": "hello world" },
{ "text": "goodbye world" }]
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(data)
model = get_registry()
.get("openai")
.create(name="text-embedding-ada-002")
```
### AWS Bedrock Text Embedding Functions
AWS Bedrock supports multiple base models for generating text embeddings. You need to setup the AWS credentials to use this embedding function.
You can do so by using `awscli` and also add your session_token:
```shell
aws configure
aws configure set aws_session_token "<your_session_token>"
```
to ensure that the credentials are set up correctly, you can run the following command:
```shell
aws sts get-caller-identity
```
Supported Embedding modelIDs are:
* `amazon.titan-embed-text-v1`
* `cohere.embed-english-v3`
* `cohere.embed-multilingual-v3`
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| **name** | str | "amazon.titan-embed-text-v1" | The model ID of the bedrock model to use. Supported base models for Text Embeddings: amazon.titan-embed-text-v1, cohere.embed-english-v3, cohere.embed-multilingual-v3 |
| **region** | str | "us-east-1" | Optional name of the AWS Region in which the service should be called (e.g., "us-east-1"). |
| **profile_name** | str | None | Optional name of the AWS profile to use for calling the Bedrock service. If not specified, the default profile will be used. |
| **assumed_role** | str | None | Optional ARN of an AWS IAM role to assume for calling the Bedrock service. If not specified, the current active credentials will be used. |
| **role_session_name** | str | "lancedb-embeddings" | Optional name of the AWS IAM role session to use for calling the Bedrock service. If not specified, a "lancedb-embeddings" name will be used. |
| **runtime** | bool | True | Optional choice of getting different client to perform operations with the Amazon Bedrock service. |
| **max_retries** | int | 7 | Optional number of retries to perform when a request fails. |
Usage Example:
Now let's understand the above syntax:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
model = get_registry().get("bedrock-text").create()
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("tmp_path")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
model = get_registry().get("model_id").create(...params)
```
**This👆 line effectively creates a configured instance of an `embedding function` with `model` of choice that is ready for use.**
## Multi-modal embedding functions
Multi-modal embedding functions allow you to query your table using both images and text.
- `get_registry()` : This function call returns an instance of a `EmbeddingFunctionRegistry` object. This registry manages the registration and retrieval of embedding functions.
### OpenClip embeddings
We support CLIP model embeddings using the open source alternative, [open-clip](https://github.com/mlfoundations/open_clip) which supports various customizations. It is registered as `open-clip` and supports the following customizations:
- `.get("model_id")` : This method call on the registry object and retrieves the **embedding models functions** associated with the `"model_id"` (1) .
{ .annotate }
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"ViT-B-32"` | The name of the model. |
| `pretrained` | `str` | `"laion2b_s34b_b79k"` | The name of the pretrained model to load. |
| `device` | `str` | `"cpu"` | The device to run the model on. Can be `"cpu"` or `"gpu"`. |
| `batch_size` | `int` | `64` | The number of images to process in a batch. |
| `normalize` | `bool` | `True` | Whether to normalize the input images before feeding them to the model. |
1. Hover over the names in table below to find out the `model_id` of different embedding functions.
This embedding function supports ingesting images as both bytes and urls. You can query them using both test and other images.
- `.create(...params)` : This method call is on the object returned by the `get` method. It instantiates an embedding model function using the **specified parameters**.
!!! info
LanceDB supports ingesting images directly from accessible links.
??? question "What parameters does the `.create(...params)` method accepts?"
**Checkout the documentation of specific embedding models (links in the table below👇) to know what parameters it takes**.
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
!!! tip "Moving on"
Now that we know how to get the **desired embedding model** and use it in our code, let's explore the comprehensive **list** of embedding models **supported by LanceDB**, in the tables below.
db = lancedb.connect(tmp_path)
func = get_registry.get("open-clip").create()
## Text Embedding Functions 📝
These functions are registered by default to handle text embeddings.
class Images(LanceModel):
label: str
image_uri: str = func.SourceField() # image uri as the source
image_bytes: bytes = func.SourceField() # image bytes as the source
vector: Vector(func.ndims()) = func.VectorField() # vector column
vec_from_bytes: Vector(func.ndims()) = func.VectorField() # Another vector column
- 🔄 **Embedding functions** have an inbuilt rate limit handler wrapper for source and query embedding function calls that retry with **exponential backoff**.
table = db.create_table("images", schema=Images)
labels = ["cat", "cat", "dog", "dog", "horse", "horse"]
uris = [
"http://farm1.staticflickr.com/53/167798175_7c7845bbbd_z.jpg",
"http://farm1.staticflickr.com/134/332220238_da527d8140_z.jpg",
"http://farm9.staticflickr.com/8387/8602747737_2e5c2a45d4_z.jpg",
"http://farm5.staticflickr.com/4092/5017326486_1f46057f5f_z.jpg",
"http://farm9.staticflickr.com/8216/8434969557_d37882c42d_z.jpg",
"http://farm6.staticflickr.com/5142/5835678453_4f3a4edb45_z.jpg",
]
# get each uri as bytes
image_bytes = [requests.get(uri).content for uri in uris]
table.add(
[{"label": labels, "image_uri": uris, "image_bytes": image_bytes}]
)
```
Now we can search using text from both the default vector column and the custom vector column
```python
- 🌕 Each `EmbeddingFunction` implementation automatically takes `max_retries` as an argument which has the default value of 7.
# text search
actual = table.search("man's best friend").limit(1).to_pydantic(Images)[0]
print(actual.label) # prints "dog"
🌟 **Available Text Embeddings**
frombytes = (
table.search("man's best friend", vector_column_name="vec_from_bytes")
.limit(1)
.to_pydantic(Images)[0]
)
print(frombytes.label)
| **Embedding** :material-information-outline:{ title="Hover over the name to find out the model_id" } | **Description** | **Documentation** |
|-----------|-------------|---------------|
| [**Sentence Transformers**](available_embedding_models/text_embedding_functions/sentence_transformers.md "sentence-transformers") | 🧠 **SentenceTransformers** is a Python framework for state-of-the-art sentence, text, and image embeddings. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/sbert_2.png" alt="Sentence Transformers Icon" width="90" height="35">](available_embedding_models/text_embedding_functions/sentence_transformers.md)|
| [**Huggingface Models**](available_embedding_models/text_embedding_functions/huggingface_embedding.md "huggingface") |🤗 We offer support for all **Huggingface** models. The default model is `colbert-ir/colbertv2.0`. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/hugging_face.png" alt="Huggingface Icon" width="130" height="35">](available_embedding_models/text_embedding_functions/huggingface_embedding.md) |
| [**Ollama Embeddings**](available_embedding_models/text_embedding_functions/ollama_embedding.md "ollama") | 🔍 Generate embeddings via the **Ollama** python library. Ollama supports embedding models, making it possible to build RAG apps. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/Ollama.png" alt="Ollama Icon" width="110" height="35">](available_embedding_models/text_embedding_functions/ollama_embedding.md)|
| [**OpenAI Embeddings**](available_embedding_models/text_embedding_functions/openai_embedding.md "openai")| 🔑 **OpenAIs** text embeddings measure the relatedness of text strings. **LanceDB** supports state-of-the-art embeddings from OpenAI. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/openai.png" alt="OpenAI Icon" width="100" height="35">](available_embedding_models/text_embedding_functions/openai_embedding.md)|
| [**Instructor Embeddings**](available_embedding_models/text_embedding_functions/instructor_embedding.md "instructor") | 📚 **Instructor**: An instruction-finetuned text embedding model that can generate text embeddings tailored to any task and domains by simply providing the task instruction, without any finetuning. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/instructor_embedding.png" alt="Instructor Embedding Icon" width="140" height="35">](available_embedding_models/text_embedding_functions/instructor_embedding.md) |
| [**Gemini Embeddings**](available_embedding_models/text_embedding_functions/gemini_embedding.md "gemini-text") | 🌌 Googles Gemini API generates state-of-the-art embeddings for words, phrases, and sentences. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/gemini.png" alt="Gemini Icon" width="95" height="35">](available_embedding_models/text_embedding_functions/gemini_embedding.md) |
| [**Cohere Embeddings**](available_embedding_models/text_embedding_functions/cohere_embedding.md "cohere") | 💬 This will help you get started with **Cohere** embedding models using LanceDB. Using cohere API requires cohere package. Install it via `pip`. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/cohere.png" alt="Cohere Icon" width="140" height="35">](available_embedding_models/text_embedding_functions/cohere_embedding.md) |
| [**Jina Embeddings**](available_embedding_models/text_embedding_functions/jina_embedding.md "jina") | 🔗 World-class embedding models to improve your search and RAG systems. You will need **jina api key**. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/jina.png" alt="Jina Icon" width="90" height="35">](available_embedding_models/text_embedding_functions/jina_embedding.md) |
| [ **AWS Bedrock Functions**](available_embedding_models/text_embedding_functions/aws_bedrock_embedding.md "bedrock-text") | ☁️ AWS Bedrock supports multiple base models for generating text embeddings. You need to setup the AWS credentials to use this embedding function. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/aws_bedrock.png" alt="AWS Bedrock Icon" width="120" height="35">](available_embedding_models/text_embedding_functions/aws_bedrock_embedding.md) |
| [**IBM Watsonx.ai**](available_embedding_models/text_embedding_functions/ibm_watsonx_ai_embedding.md "watsonx") | 💡 Generate text embeddings using IBM's watsonx.ai platform. **Note**: watsonx.ai library is an optional dependency. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/watsonx.png" alt="Watsonx Icon" width="140" height="35">](available_embedding_models/text_embedding_functions/ibm_watsonx_ai_embedding.md) |
```
Because we're using a multi-modal embedding function, we can also search using images
```python
# image search
query_image_uri = "http://farm1.staticflickr.com/200/467715466_ed4a31801f_z.jpg"
image_bytes = requests.get(query_image_uri).content
query_image = Image.open(io.BytesIO(image_bytes))
actual = table.search(query_image).limit(1).to_pydantic(Images)[0]
print(actual.label == "dog")
[st-key]: "sentence-transformers"
[hf-key]: "huggingface"
[ollama-key]: "ollama"
[openai-key]: "openai"
[instructor-key]: "instructor"
[gemini-key]: "gemini-text"
[cohere-key]: "cohere"
[jina-key]: "jina"
[aws-key]: "bedrock-text"
[watsonx-key]: "watsonx"
# image search using a custom vector column
other = (
table.search(query_image, vector_column_name="vec_from_bytes")
.limit(1)
.to_pydantic(Images)[0]
)
print(actual.label)
```
## Multi-modal Embedding Functions🖼
### Imagebind embeddings
We have support for [imagebind](https://github.com/facebookresearch/ImageBind) model embeddings. You can download our version of the packaged model via - `pip install imagebind-packaged==0.1.2`.
Multi-modal embedding functions allow you to query your table using both images and text. 💬🖼️
This function is registered as `imagebind` and supports Audio, Video and Text modalities(extending to Thermal,Depth,IMU data):
🌐 **Available Multi-modal Embeddings**
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"imagebind_huge"` | Name of the model. |
| `device` | `str` | `"cpu"` | The device to run the model on. Can be `"cpu"` or `"gpu"`. |
| `normalize` | `bool` | `False` | set to `True` to normalize your inputs before model ingestion. |
| Embedding :material-information-outline:{ title="Hover over the name to find out the model_id" } | Description | Documentation |
|-----------|-------------|---------------|
| [**OpenClip Embeddings**](available_embedding_models/multimodal_embedding_functions/openclip_embedding.md "open-clip") | 🎨 We support CLIP model embeddings using the open source alternative, **open-clip** which supports various customizations. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/openclip_github.png" alt="openclip Icon" width="150" height="35">](available_embedding_models/multimodal_embedding_functions/openclip_embedding.md) |
| [**Imagebind Embeddings**](available_embedding_models/multimodal_embedding_functions/imagebind_embedding.md "imageind") | 🌌 We have support for **imagebind model embeddings**. You can download our version of the packaged model via - `pip install imagebind-packaged==0.1.2`. | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/imagebind_meta.png" alt="imagebind Icon" width="150" height="35">](available_embedding_models/multimodal_embedding_functions/imagebind_embedding.md)|
| [**Jina Multi-modal Embeddings**](available_embedding_models/multimodal_embedding_functions/jina_multimodal_embedding.md "jina") | 🔗 **Jina embeddings** can also be used to embed both **text** and **image** data, only some of the models support image data and you can check the detailed documentation. 👉 | [<img src="https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/logos/jina.png" alt="jina Icon" width="90" height="35">](available_embedding_models/multimodal_embedding_functions/jina_multimodal_embedding.md) |
Below is an example demonstrating how the API works:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect(tmp_path)
func = get_registry.get("imagebind").create()
class ImageBindModel(LanceModel):
text: str
image_uri: str = func.SourceField()
audio_path: str
vector: Vector(func.ndims()) = func.VectorField()
# add locally accessible image paths
text_list=["A dog.", "A car", "A bird"]
image_paths=[".assets/dog_image.jpg", ".assets/car_image.jpg", ".assets/bird_image.jpg"]
audio_paths=[".assets/dog_audio.wav", ".assets/car_audio.wav", ".assets/bird_audio.wav"]
# Load data
inputs = [
{"text": a, "audio_path": b, "image_uri": c}
for a, b, c in zip(text_list, audio_paths, image_paths)
]
#create table and add data
table = db.create_table("img_bind", schema=ImageBindModel)
table.add(inputs)
```
Now, we can search using any modality:
#### image search
```python
query_image = "./assets/dog_image2.jpg" #download an image and enter that path here
actual = table.search(query_image).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "dog")
```
#### audio search
```python
query_audio = "./assets/car_audio2.wav" #download an audio clip and enter path here
actual = table.search(query_audio).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "car")
```
#### Text search
You can add any input query and fetch the result as follows:
```python
query = "an animal which flies and tweets"
actual = table.search(query).limit(1).to_pydantic(ImageBindModel)[0]
print(actual.text == "bird")
```
If you have any questions about the embeddings API, supported models, or see a relevant model missing, please raise an issue [on GitHub](https://github.com/lancedb/lancedb/issues).
!!! note
If you'd like to request support for additional **embedding functions**, please feel free to open an issue on our LanceDB [GitHub issue page](https://github.com/lancedb/lancedb/issues).

View File

@@ -2,12 +2,12 @@ Representing multi-modal data as vector embeddings is becoming a standard practi
For this purpose, LanceDB introduces an **embedding functions API**, that allow you simply set up once, during the configuration stage of your project. After this, the table remembers it, effectively making the embedding functions *disappear in the background* so you don't have to worry about manually passing callables, and instead, simply focus on the rest of your data engineering pipeline.
!!! Note "LanceDB cloud doesn't support embedding functions yet"
LanceDB Cloud does not support embedding functions yet. You need to generate embeddings before ingesting into the table or querying.
!!! Note "Embedding functions on LanceDB cloud"
When using embedding functions with LanceDB cloud, the embeddings will be generated on the source device and sent to the cloud. This means that the source device must have the necessary resources to generate the embeddings.
!!! warning
Using the embedding function registry means that you don't have to explicitly generate the embeddings yourself.
However, if your embedding function changes, you'll have to re-configure your table with the new embedding function
Using the embedding function registry means that you don't have to explicitly generate the embeddings yourself.
However, if your embedding function changes, you'll have to re-configure your table with the new embedding function
and regenerate the embeddings. In the future, we plan to support the ability to change the embedding function via
table metadata and have LanceDB automatically take care of regenerating the embeddings.
@@ -16,7 +16,7 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
=== "Python"
In the LanceDB python SDK, we define a global embedding function registry with
many different embedding models and even more coming soon.
many different embedding models and even more coming soon.
Here's let's an implementation of CLIP as example.
```python
@@ -26,20 +26,35 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
clip = registry.get("open-clip").create()
```
You can also define your own embedding function by implementing the `EmbeddingFunction`
You can also define your own embedding function by implementing the `EmbeddingFunction`
abstract base interface. It subclasses Pydantic Model which can be utilized to write complex schemas simply as we'll see next!
=== "JavaScript""
=== "TypeScript"
In the TypeScript SDK, the choices are more limited. For now, only the OpenAI
embedding function is available.
```javascript
const lancedb = require("vectordb");
import * as lancedb from '@lancedb/lancedb'
import { getRegistry } from '@lancedb/lancedb/embeddings'
// You need to provide an OpenAI API key
const apiKey = "sk-..."
// The embedding function will create embeddings for the 'text' column
const embedding = new lancedb.OpenAIEmbeddingFunction('text', apiKey)
const func = getRegistry().get("openai").create({apiKey})
```
=== "Rust"
In the Rust SDK, the choices are more limited. For now, only the OpenAI
embedding function is available. But unlike the Python and TypeScript SDKs, you need manually register the OpenAI embedding function.
```toml
// Make sure to include the `openai` feature
[dependencies]
lancedb = {version = "*", features = ["openai"]}
```
```rust
--8<-- "rust/lancedb/examples/openai.rs:imports"
--8<-- "rust/lancedb/examples/openai.rs:openai_embeddings"
```
## 2. Define the data model or schema
@@ -55,14 +70,14 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
`VectorField` tells LanceDB to use the clip embedding function to generate query embeddings for the `vector` column and `SourceField` ensures that when adding data, we automatically use the specified embedding function to encode `image_uri`.
=== "JavaScript"
=== "TypeScript"
For the TypeScript SDK, a schema can be inferred from input data, or an explicit
Arrow schema can be provided.
## 3. Create table and add data
Now that we have chosen/defined our embedding function and the schema,
Now that we have chosen/defined our embedding function and the schema,
we can create the table and ingest data without needing to explicitly generate
the embeddings at all:
@@ -74,17 +89,26 @@ the embeddings at all:
table.add([{"image_uri": u} for u in uris])
```
=== "JavaScript"
=== "TypeScript"
```javascript
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
=== "@lancedb/lancedb"
const table = await db.createTable("vectors", data, embedding)
```
```ts
--8<-- "nodejs/examples/embedding.ts:imports"
--8<-- "nodejs/examples/embedding.ts:embedding_function"
```
=== "vectordb (deprecated)"
```ts
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
const table = await db.createTable("vectors", data, embedding)
```
## 4. Querying your table
Not only can you forget about the embeddings during ingestion, you also don't
@@ -97,8 +121,8 @@ need to worry about it when you query the table:
```python
results = (
table.search("dog")
.limit(10)
.to_pandas()
.limit(10)
.to_pandas()
)
```
@@ -109,22 +133,32 @@ need to worry about it when you query the table:
query_image = Image.open(p)
results = (
table.search(query_image)
.limit(10)
.to_pandas()
.limit(10)
.to_pandas()
)
```
Both of the above snippet returns a pandas DataFrame with the 10 closest vectors to the query.
=== "JavaScript"
=== "TypeScript"
=== "@lancedb/lancedb"
```ts
const results = await table.search("What's the best pizza topping?")
.limit(10)
.toArray()
```
=== "vectordb (deprecated)
```ts
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
```javascript
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
The above snippet returns an array of records with the top 10 nearest neighbors to the query.
---

View File

@@ -1,13 +1,13 @@
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio.
This makes them a very powerful tool for machine learning practitioners.
However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio.
This makes them a very powerful tool for machine learning practitioners.
However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs
(both commercial and open source) that can be used to generate embeddings from structured/unstructured data.
LanceDB supports 3 methods of working with embeddings.
1. You can manually generate embeddings for the data and queries. This is done outside of LanceDB.
2. You can use the built-in [embedding functions](./embedding_functions.md) to embed the data and queries in the background.
3. For python users, you can define your own [custom embedding function](./custom_embedding_function.md)
3. You can define your own [custom embedding function](./custom_embedding_function.md)
that extends the default embedding functions.
For python users, there is also a legacy [with_embeddings API](./legacy.md).
@@ -18,21 +18,109 @@ It is retained for compatibility and will be removed in a future version.
To get started with embeddings, you can use the built-in embedding functions.
### OpenAI Embedding function
LanceDB registers the OpenAI embeddings function in the registry as `openai`. You can pass any supported model name to the `create`. By default it uses `"text-embedding-ada-002"`.
=== "Python"
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
=== "TypeScript"
```typescript
--8<--- "nodejs/examples/embedding.ts:imports"
--8<--- "nodejs/examples/embedding.ts:openai_embeddings"
```
=== "Rust"
```rust
--8<--- "rust/lancedb/examples/openai.rs:imports"
--8<--- "rust/lancedb/examples/openai.rs:openai_embeddings"
```
### Sentence Transformers Embedding function
LanceDB registers the Sentence Transformers embeddings function in the registry as `sentence-transformers`. You can pass any supported model name to the `create`. By default it uses `"sentence-transformers/paraphrase-MiniLM-L6-v2"`.
=== "Python"
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
=== "TypeScript"
Coming Soon!
=== "Rust"
Coming Soon!
### Embedding function with LanceDB cloud
Embedding functions are now supported on LanceDB cloud. The embeddings will be generated on the source device and sent to the cloud. This means that the source device must have the necessary resources to generate the embeddings. Here's an example using the OpenAI embedding function:
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
os.environ['OPENAI_API_KEY'] = "..."
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
db = lancedb.connect(
uri="db://....",
api_key="sk_...",
region="us-east-1"
)
func = get_registry().get("openai").create()
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
@@ -44,31 +132,3 @@ query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
### Sentence Transformers Embedding function
LanceDB registers the Sentence Transformers embeddings function in the registry as `sentence-transformers`. You can pass any supported model name to the `create`. By default it uses `"sentence-transformers/paraphrase-MiniLM-L6-v2"`.
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```

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@@ -1,17 +1,22 @@
# Examples: Python
# Overview : Python Examples
To help you get started, we provide some examples, projects and applications that use the LanceDB Python API. You can always find the latest examples in our [VectorDB Recipes](https://github.com/lancedb/vectordb-recipes) repository.
To help you get started, we provide some examples, projects, and applications that use the LanceDB Python API. These examples are designed to get you right into the code with minimal introduction, enabling you to move from an idea to a proof of concept in minutes.
| Example | Interactive Envs | Scripts |
|-------- | ---------------- | ------ |
| | | |
| [Youtube transcript search bot](https://github.com/lancedb/vectordb-recipes/tree/main/examples/youtube_bot/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/youtube_bot/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>| [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/youtube_bot/main.py)|
| [Langchain: Code Docs QA bot](https://github.com/lancedb/vectordb-recipes/tree/main/examples/Code-Documentation-QA-Bot/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>| [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/Code-Documentation-QA-Bot/main.py) |
| [AI Agents: Reducing Hallucination](https://github.com/lancedb/vectordb-recipes/tree/main/examples/reducing_hallucinations_ai_agents/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>| [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/reducing_hallucinations_ai_agents/main.py)|
| [Multimodal CLIP: DiffusionDB](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_clip/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>| [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_clip/main.py) |
| [Multimodal CLIP: Youtube videos](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_video_search/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>| [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_video_search/main.py) |
| [Movie Recommender](https://github.com/lancedb/vectordb-recipes/tree/main/examples/movie-recommender/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/movie-recommender/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a> | [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/movie-recommender/main.py) |
| [Audio Search](https://github.com/lancedb/vectordb-recipes/tree/main/examples/audio_search/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/audio_search/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a> | [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/audio_search/main.py) |
| [Multimodal Image + Text Search](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_search/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_search/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a> | [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/examples/multimodal_search/main.py) |
| [Evaluating Prompts with Prompttools](https://github.com/lancedb/vectordb-recipes/tree/main/examples/prompttools-eval-prompts/) | <a href="https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/prompttools-eval-prompts/main.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a> | |
You can find the latest examples in our [VectorDB Recipes](https://github.com/lancedb/vectordb-recipes) repository.
**Introduction**
Explore applied examples available as Colab notebooks or Python scripts to integrate into your applications. You can also checkout our blog posts related to the particular example for deeper understanding.
| Explore | Description |
|----------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [**Build from Scratch with LanceDB** 🛠️🚀](python_examples/build_from_scratch.md) | Start building your **GenAI applications** from the **ground up** using **LanceDB's** efficient vector-based document retrieval capabilities! Get started quickly with a solid foundation. |
| [**Multimodal Search with LanceDB** 🤹‍♂️🔍](python_examples/multimodal.md) | Combine **text** and **image queries** to find the most relevant results using **LanceDBs multimodal** capabilities. Leverage the efficient vector-based similarity search. |
| [**RAG (Retrieval-Augmented Generation) with LanceDB** 🔓🧐](python_examples/rag.md) | Build RAG (Retrieval-Augmented Generation) with **LanceDB** for efficient **vector-based information retrieval** and more accurate responses from AI. |
| [**Vector Search: Efficient Retrieval** 🔓👀](python_examples/vector_search.md) | Use **LanceDB's** vector search capabilities to perform efficient and accurate **similarity searches**, enabling rapid discovery and retrieval of relevant documents in Large datasets. |
| [**Chatbot applications with LanceDB** 🤖](python_examples/chatbot.md) | Create **chatbots** that retrieves relevant context for **coherent and context-aware replies**, enhancing user experience through advanced conversational AI. |
| [**Evaluation: Assessing Text Performance with Precision** 📊💡](python_examples/evaluations.md) | Develop **evaluation** applications that allows you to input reference and candidate texts to **measure** their performance across various metrics. |
| [**AI Agents: Intelligent Collaboration** 🤖](python_examples/aiagent.md) | Enable **AI agents** to communicate and collaborate efficiently through dense vector representations, achieving shared goals seamlessly. |
| [**Recommender Systems: Personalized Discovery** 🍿📺](python_examples/recommendersystem.md) | Deliver **personalized experiences** by efficiently storing and querying item embeddings with **LanceDB's** powerful vector database capabilities. |
| **Miscellaneous Examples🌟** | Find other **unique examples** and **creative solutions** using **LanceDB**, showcasing the flexibility and broad applicability of the platform. |

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@@ -10,7 +10,7 @@ LanceDB provides language APIs, allowing you to embed a database in your languag
## Applications powered by LanceDB
| Project Name | Description | Screenshot |
|-----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------|-------------------------------------------|
| [YOLOExplorer](https://github.com/lancedb/yoloexplorer) | Iterate on your YOLO / CV datasets using SQL, Vector semantic search, and more within seconds | ![YOLOExplorer](https://github.com/lancedb/vectordb-recipes/assets/15766192/ae513a29-8f15-4e0b-99a1-ccd8272b6131) |
| [Website Chatbot (Deployable Vercel Template)](https://github.com/lancedb/lancedb-vercel-chatbot) | Create a chatbot from the sitemap of any website/docs of your choice. Built using vectorDB serverless native javascript package. | ![Chatbot](../assets/vercel-template.gif) |
| Project Name | Description |
| --- | --- |
| **Ultralytics Explorer 🚀**<br>[![Ultralytics](https://img.shields.io/badge/Ultralytics-Docs-green?labelColor=0f3bc4&style=flat-square&logo=https://cdn.prod.website-files.com/646dd1f1a3703e451ba81ecc/64994922cf2a6385a4bf4489_UltralyticsYOLO_mark_blue.svg&link=https://docs.ultralytics.com/datasets/explorer/)](https://docs.ultralytics.com/datasets/explorer/)<br>[![Open In Collab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/ultralytics/ultralytics/blob/main/docs/en/datasets/explorer/explorer.ipynb) | - 🔍 **Explore CV Datasets**: Semantic search, SQL queries, vector similarity, natural language.<br>- 🖥️ **GUI & Python API**: Seamless dataset interaction.<br>- ⚡ **Efficient & Scalable**: Leverages LanceDB for large datasets.<br>- 📊 **Detailed Analysis**: Easily analyze data patterns.<br>- 🌐 **Browser GUI Demo**: Create embeddings, search images, run queries. |
| **Website Chatbot🤖**<br>[![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/lancedb-vercel-chatbot)<br>[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Flancedb%2Flancedb-vercel-chatbot&amp;env=OPENAI_API_KEY&amp;envDescription=OpenAI%20API%20Key%20for%20chat%20completion.&amp;project-name=lancedb-vercel-chatbot&amp;repository-name=lancedb-vercel-chatbot&amp;demo-title=LanceDB%20Chatbot%20Demo&amp;demo-description=Demo%20website%20chatbot%20with%20LanceDB.&amp;demo-url=https%3A%2F%2Flancedb.vercel.app&amp;demo-image=https%3A%2F%2Fi.imgur.com%2FazVJtvr.png) | - 🌐 **Chatbot from Sitemap/Docs**: Create a chatbot using site or document context.<br>- 🚀 **Embed LanceDB in Next.js**: Lightweight, on-prem storage.<br>- 🧠 **AI-Powered Context Retrieval**: Efficiently access relevant data.<br>- 🔧 **Serverless & Native JS**: Seamless integration with Next.js.<br>- ⚡ **One-Click Deploy on Vercel**: Quick and easy setup.. |

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@@ -0,0 +1,27 @@
# AI Agents: Intelligent Collaboration🤖
Think of a platform where AI Agents can seamlessly exchange information, coordinate over tasks, and achieve shared targets with great efficiency💻📈.
## Vector-Based Coordination: The Technical Advantage
Leveraging LanceDB's vector-based capabilities, we can enable **AI agents 🤖** to communicate and collaborate through dense vector representations. AI agents can exchange information, coordinate on a task or work towards a common goal, just by giving queries📝.
| **AI Agents** | **Description** | **Links** |
|:--------------|:----------------|:----------|
| **AI Agents: Reducing Hallucinationt📊** | 🤖💡 **Reduce AI hallucinations** using Critique-Based Contexting! Learn by Simplifying and Automating tedious workflows by going through fitness trainer agent example.💪 | [![Github](../../assets/github.svg)][hullucination_github] <br>[![Open In Collab](../../assets/colab.svg)][hullucination_colab] <br>[![Python](../../assets/python.svg)][hullucination_python] <br>[![Ghost](../../assets/ghost.svg)][hullucination_ghost] |
| **AI Trends Searcher: CrewAI🔍** | 🔍️ Learn about **CrewAI Agents** ! Utilize the features of CrewAI - Role-based Agents, Task Management, and Inter-agent Delegation ! Make AI agents work together to do tricky stuff 😺| [![Github](../../assets/github.svg)][trend_github] <br>[![Open In Collab](../../assets/colab.svg)][trend_colab] <br>[![Ghost](../../assets/ghost.svg)][trend_ghost] |
| **SuperAgent Autogen🤖** | 💻 AI interactions with the Super Agent! Integrating **Autogen**, **LanceDB**, **LangChain**, **LiteLLM**, and **Ollama** to create AI agent that excels in understanding and processing complex queries.🤖 | [![Github](../../assets/github.svg)][superagent_github] <br>[![Open In Collab](../../assets/colab.svg)][superagent_colab] |
[hullucination_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents
[hullucination_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents/main.ipynb
[hullucination_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents/main.py
[hullucination_ghost]: https://blog.lancedb.com/how-to-reduce-hallucinations-from-llm-powered-agents-using-long-term-memory-72f262c3cc1f/
[trend_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/AI-Trends-with-CrewAI
[trend_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/AI-Trends-with-CrewAI/CrewAI_AI_Trends.ipynb
[trend_ghost]: https://blog.lancedb.com/track-ai-trends-crewai-agents-rag/
[superagent_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/SuperAgent_Autogen
[superagent_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/SuperAgent_Autogen/main.ipynb

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# **Build from Scratch with LanceDB 🛠️🚀**
Start building your GenAI applications from the ground up using **LanceDB's** efficient vector-based document retrieval capabilities! 📑
**Get Started in Minutes ⏱️**
These examples provide a solid foundation for building your own GenAI applications using LanceDB. Jump from idea to **proof of concept** quickly with applied examples. Get started and see what you can create! 💻
| **Build From Scratch** | **Description** | **Links** |
|:-------------------------------------------|:-------------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Build RAG from Scratch🚀💻** | 📝 Create a **Retrieval-Augmented Generation** (RAG) model from scratch using LanceDB. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/RAG-from-Scratch)<br>[![Open In Collab](https://colab.research.google.com/assets/colab-badge.svg)]() |
| **Local RAG from Scratch with Llama3🔥💡** | 🐫 Build a local RAG model using **Llama3** and **LanceDB** for fast and efficient text generation. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Local-RAG-from-Scratch)<br>[![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Local-RAG-from-Scratch/rag.py) |
| **Multi-Head RAG from Scratch📚💻** | 🤯 Develop a **Multi-Head RAG model** from scratch, enabling generation of text based on multiple documents. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Multi-Head-RAG-from-Scratch)<br>[![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Multi-Head-RAG-from-Scratch) |

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**Chatbot applications with LanceDB 🤖**
====================================================================
Create innovative chatbot applications that utilizes LanceDB for efficient vector-based response generation! 🌐✨
**Introduction 👋✨**
Users can input their queries, allowing the chatbot to retrieve relevant context seamlessly. 🔍📚 This enables the generation of coherent and context-aware replies that enhance user experience. 🌟🤝 Dive into the world of advanced conversational AI and streamline interactions with powerful data management! 🚀💡
| **Chatbot** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Databricks DBRX Website Bot ⚡️** | Engage with the **Hogwarts chatbot**, that uses Open-source RAG with **DBRX**, **LanceDB** and **LLama-index with Hugging Face Embeddings**, to provide interactive and engaging user experiences. ✨ | [![GitHub](../../assets/github.svg)][databricks_github] <br>[![Python](../../assets/python.svg)][databricks_python] |
| **CLI SDK Manual Chatbot Locally 💻** | CLI chatbot for SDK/hardware documents using **Local RAG** with **LLama3**, **Ollama**, **LanceDB**, and **Openhermes Embeddings**, built with **Phidata** Assistant and Knowledge Base 🤖 | [![GitHub](../../assets/github.svg)][clisdk_github] <br>[![Python](../../assets/python.svg)][clisdk_python] |
| **Youtube Transcript Search QA Bot 📹** | Search through **youtube transcripts** using natural language with a Q&A bot, leveraging **LanceDB** for effortless data storage and management 💬 | [![GitHub](../../assets/github.svg)][youtube_github] <br>[![Open In Collab](../../assets/colab.svg)][youtube_colab] <br>[![Python](../../assets/python.svg)][youtube_python] |
| **Code Documentation Q&A Bot with LangChain 🤖** | Query your own documentation easily using questions in natural language with a Q&A bot, powered by **LangChain** and **LanceDB**, demonstrated with **Numpy 1.26 docs** 📚 | [![GitHub](../../assets/github.svg)][docs_github] <br>[![Open In Collab](../../assets/colab.svg)][docs_colab] <br>[![Python](../../assets/python.svg)][docs_python] |
| **Context-aware Chatbot using Llama 2 & LanceDB 🤖** | Build **conversational AI** with a **context-aware chatbot**, powered by **Llama 2**, **LanceDB**, and **LangChain**, that enables intuitive and meaningful conversations with your data 📚💬 | [![GitHub](../../assets/github.svg)][aware_github] <br>[![Open In Collab](../../assets/colab.svg)][aware_colab] <br>[![Ghost](../../assets/ghost.svg)][aware_ghost] |
| **Chat with csv using Hybrid Search 📊** | **Chat** application that interacts with **CSV** and **Excel files** using **LanceDBs** hybrid search capabilities, performing direct operations on large-scale columnar data efficiently 🚀 | [![GitHub](../../assets/github.svg)][csv_github] <br>[![Open In Collab](../../assets/colab.svg)][csv_colab] <br>[![Ghost](../../assets/ghost.svg)][csv_ghost] |
[databricks_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/databricks_DBRX_website_bot
[databricks_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/databricks_DBRX_website_bot/main.py
[clisdk_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/CLI-SDK-Manual-Chatbot-Locally
[clisdk_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/CLI-SDK-Manual-Chatbot-Locally/assistant.py
[youtube_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot
[youtube_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot/main.ipynb
[youtube_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot/main.py
[docs_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot
[docs_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot/main.ipynb
[docs_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot/main.py
[aware_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/chatbot_using_Llama2_&_lanceDB
[aware_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/chatbot_using_Llama2_&_lanceDB/main.ipynb
[aware_ghost]: https://blog.lancedb.com/context-aware-chatbot-using-llama-2-lancedb-as-vector-database-4d771d95c755
[csv_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Chat_with_csv_file
[csv_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Chat_with_csv_file/main.ipynb
[csv_ghost]: https://blog.lancedb.com/p/d8c71df4-e55f-479a-819e-cde13354a6a3/

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**Evaluation: Assessing Text Performance with Precision 📊💡**
====================================================================
Evaluation is a comprehensive tool designed to measure the performance of text-based inputs, enabling data-driven optimization and improvement 📈.
**Text Evaluation 101 📚**
Using robust framework for assessing reference and candidate texts across various metrics📊, ensure that the text outputs are high-quality and meet specific requirements and standards📝.
| **Evaluation** | **Description** | **Links** |
| -------------- | --------------- | --------- |
| **Evaluating Prompts with Prompttools 🤖** | Compare, visualize & evaluate **embedding functions** (incl. OpenAI) across metrics like latency & custom evaluation 📈📊 | [![Github](../../assets/github.svg)][prompttools_github] <br>[![Open In Collab](../../assets/colab.svg)][prompttools_colab] |
| **Evaluating RAG with RAGAs and GPT-4o 📊** | Evaluate **RAG pipelines** with cutting-edge metrics and tools, integrate with CI/CD for continuous performance checks, and generate responses with GPT-4o 🤖📈 | [![Github](../../assets/github.svg)][RAGAs_github] <br>[![Open In Collab](../../assets/colab.svg)][RAGAs_colab] |
[prompttools_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/prompttools-eval-prompts
[prompttools_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/prompttools-eval-prompts/main.ipynb
[RAGAs_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Evaluating_RAG_with_RAGAs
[RAGAs_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Evaluating_RAG_with_RAGAs/Evaluating_RAG_with_RAGAs.ipynb

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# **Multimodal Search with LanceDB 🤹‍♂️🔍**
Using LanceDB's multimodal capabilities, combine text and image queries to find the most relevant results in your corpus ! 🔓💡
**Explore the Future of Search 🚀**
LanceDB supports multimodal search by indexing and querying vector representations of text and image data 🤖. This enables efficient retrieval of relevant documents and images using vector-based similarity search 📊. The platform facilitates cross-modal search, allowing for text-image and image-text retrieval, and supports scalable indexing of high-dimensional vector spaces 💻.
| **Multimodal** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Multimodal CLIP: DiffusionDB 🌐💥** | Multi-Modal Search with **CLIP** and **LanceDB** Using **DiffusionDB** Data for Combined Text and Image Understanding ! 🔓 | [![GitHub](../../assets/github.svg)][Clip_diffusionDB_github] <br>[![Open In Collab](../../assets/colab.svg)][Clip_diffusionDB_colab] <br>[![Python](../../assets/python.svg)][Clip_diffusionDB_python] <br>[![Ghost](../../assets/ghost.svg)][Clip_diffusionDB_ghost] |
| **Multimodal CLIP: Youtube Videos 📹👀** | Search **Youtube videos** using Multimodal CLIP, finding relevant content with ease and accuracy! 🎯 | [![Github](../../assets/github.svg)][Clip_youtube_github] <br>[![Open In Collab](../../assets/colab.svg)][Clip_youtube_colab] <br> [![Python](../../assets/python.svg)][Clip_youtube_python] <br>[![Ghost](../../assets/ghost.svg)][Clip_youtube_python] |
| **Multimodal Image + Text Search 📸🔍** | Find **relevant documents** and **images** with a single query using **LanceDB's** multimodal search capabilities, to seamlessly integrate text and visuals ! 🌉 | [![GitHub](../../assets/github.svg)](https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_search) <br>[![Open In Collab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_search/main.ipynb) <br> [![Python](../../assets/python.svg)](https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_search/main.py)<br> [![Ghost](../../assets/ghost.svg)](https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/) |
| **Cambrian-1: Vision-Centric Image Exploration 🔍👀** | Learn how **Cambrian-1** works, using an example of **Vision-Centric** exploration on images found through vector search ! Work on **Flickr-8k** dataset 🔎 | [![Kaggle](https://img.shields.io/badge/Kaggle-035a7d?style=for-the-badge&logo=kaggle&logoColor=white)](https://www.kaggle.com/code/prasantdixit/cambrian-1-vision-centric-exploration-of-images/)<br> [![Ghost](../../assets/ghost.svg)](https://blog.lancedb.com/cambrian-1-vision-centric-exploration/) |
[Clip_diffusionDB_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb
[Clip_diffusionDB_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb/main.ipynb
[Clip_diffusionDB_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb/main.py
[Clip_diffusionDB_ghost]: https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/
[Clip_youtube_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search
[Clip_youtube_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search/main.ipynb
[Clip_youtube_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search/main.py
[Clip_youtube_ghost]: https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/

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**RAG (Retrieval-Augmented Generation) with LanceDB 🔓🧐**
====================================================================
Build RAG (Retrieval-Augmented Generation) with LanceDB, a powerful solution for efficient vector-based information retrieval 📊.
**Experience the Future of Search 🔄**
🤖 RAG enables AI to **retrieve** relevant information from external sources and use it to **generate** more accurate and context-specific responses. 💻 LanceDB provides a robust framework for integrating LLMs with external knowledge sources 📝.
| **RAG** | **Description** | **Links** |
|----------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------|
| **RAG with Matryoshka Embeddings and LlamaIndex** 🪆🔗 | Utilize **Matryoshka embeddings** and **LlamaIndex** to improve the efficiency and accuracy of your RAG models. 📈✨ | [![Github](../../assets/github.svg)][matryoshka_github] <br>[![Open In Collab](../../assets/colab.svg)][matryoshka_colab] |
| **Improve RAG with Re-ranking** 📈🔄 | Enhance your RAG applications by implementing **re-ranking strategies** for more relevant document retrieval. 📚🔍 | [![Github](../../assets/github.svg)][rag_reranking_github] <br>[![Open In Collab](../../assets/colab.svg)][rag_reranking_colab] <br>[![Ghost](../../assets/ghost.svg)][rag_reranking_ghost] |
| **Instruct-Multitask** 🧠🎯 | Integrate the **Instruct Embedding Model** with LanceDB to streamline your embedding API, reducing redundant code and overhead. 🌐📊 | [![Github](../../assets/github.svg)][instruct_multitask_github] <br>[![Open In Collab](../../assets/colab.svg)][instruct_multitask_colab] <br>[![Python](../../assets/python.svg)][instruct_multitask_python] <br>[![Ghost](../../assets/ghost.svg)][instruct_multitask_ghost] |
| **Improve RAG with HyDE** 🌌🔍 | Use **Hypothetical Document Embeddings** for efficient, accurate, and unsupervised dense retrieval. 📄🔍 | [![Github](../../assets/github.svg)][hyde_github] <br>[![Open In Collab](../../assets/colab.svg)][hyde_colab]<br>[![Ghost](../../assets/ghost.svg)][hyde_ghost] |
| **Improve RAG with LOTR** 🧙‍♂️📜 | Enhance RAG with **Lord of the Retriever (LOTR)** to address 'Lost in the Middle' challenges, especially in medical data. 🌟📜 | [![Github](../../assets/github.svg)][lotr_github] <br>[![Open In Collab](../../assets/colab.svg)][lotr_colab] <br>[![Ghost](../../assets/ghost.svg)][lotr_ghost] |
| **Advanced RAG: Parent Document Retriever** 📑🔗 | Use **Parent Document & Bigger Chunk Retriever** to maintain context and relevance when generating related content. 🎵📄 | [![Github](../../assets/github.svg)][parent_doc_retriever_github] <br>[![Open In Collab](../../assets/colab.svg)][parent_doc_retriever_colab] <br>[![Ghost](../../assets/ghost.svg)][parent_doc_retriever_ghost] |
| **Corrective RAG with Langgraph** 🔧📊 | Enhance RAG reliability with **Corrective RAG (CRAG)** by self-reflecting and fact-checking for accurate and trustworthy results. ✅🔍 |[![Github](../../assets/github.svg)][corrective_rag_github] <br>[![Open In Collab](../../assets/colab.svg)][corrective_rag_colab] <br>[![Ghost](../../assets/ghost.svg)][corrective_rag_ghost] |
| **Contextual Compression with RAG** 🗜️🧠 | Apply **contextual compression techniques** to condense large documents while retaining essential information. 📄🗜️ | [![Github](../../assets/github.svg)][compression_rag_github] <br>[![Open In Collab](../../assets/colab.svg)][compression_rag_colab] <br>[![Ghost](../../assets/ghost.svg)][compression_rag_ghost] |
| **Improve RAG with FLARE** 🔥| Enable users to ask questions directly to **academic papers**, focusing on **ArXiv papers**, with **F**orward-**L**ooking **A**ctive **RE**trieval augmented generation.🚀🌟 | [![Github](../../assets/github.svg)][flare_github] <br>[![Open In Collab](../../assets/colab.svg)][flare_colab] <br>[![Ghost](../../assets/ghost.svg)][flare_ghost] |
| **Query Expansion and Reranker** 🔍🔄 | Enhance RAG with query expansion using Large Language Models and advanced **reranking methods** like **Cross Encoders**, **ColBERT v2**, and **FlashRank** for improved document retrieval precision and recall 🔍📈 | [![Github](../../assets/github.svg)][query_github] <br>[![Open In Collab](../../assets/colab.svg)][query_colab] |
| **RAG Fusion** ⚡🌐 | Build RAG Fusion, utilize the **RRF algorithm** to rerank documents based on user queries ! Use **LanceDB** as vector database to store and retrieve documents related to queries via **OPENAI Embeddings**⚡🌐 | [![Github](../../assets/github.svg)][fusion_github] <br>[![Open In Collab](../../assets/colab.svg)][fusion_colab] |
| **Agentic RAG** 🤖📚 | Build autonomous information retrieval with **Agentic RAG**, a framework of **intelligent agents** that collaborate to synthesize, summarize, and compare data across sources, that enables proactive and informed decision-making 🤖📚 | [![Github](../../assets/github.svg)][agentic_github] <br>[![Open In Collab](../../assets/colab.svg)][agentic_colab] |
[matryoshka_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/RAG-with_MatryoshkaEmbed-Llamaindex
[matryoshka_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/RAG-with_MatryoshkaEmbed-Llamaindex/RAG_with_MatryoshkaEmbedding_and_Llamaindex.ipynb
[rag_reranking_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/RAG_Reranking
[rag_reranking_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/RAG_Reranking/main.ipynb
[rag_reranking_ghost]: https://blog.lancedb.com/simplest-method-to-improve-rag-pipeline-re-ranking-cf6eaec6d544
[instruct_multitask_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask
[instruct_multitask_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask/main.ipynb
[instruct_multitask_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask/main.py
[instruct_multitask_ghost]: https://blog.lancedb.com/multitask-embedding-with-lancedb-be18ec397543
[hyde_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE
[hyde_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE/main.ipynb
[hyde_ghost]: https://blog.lancedb.com/advanced-rag-precise-zero-shot-dense-retrieval-with-hyde-0946c54dfdcb
[lotr_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Advance_RAG_LOTR
[lotr_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance_RAG_LOTR/main.ipynb
[lotr_ghost]: https://blog.lancedb.com/better-rag-with-lotr-lord-of-retriever-23c8336b9a35
[parent_doc_retriever_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/parent_document_retriever
[parent_doc_retriever_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/parent_document_retriever/main.ipynb
[parent_doc_retriever_ghost]: https://blog.lancedb.com/modified-rag-parent-document-bigger-chunk-retriever-62b3d1e79bc6
[corrective_rag_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph
[corrective_rag_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph/CRAG_with_Langgraph.ipynb
[corrective_rag_ghost]: https://blog.lancedb.com/implementing-corrective-rag-in-the-easiest-way-2/
[compression_rag_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Contextual-Compression-with-RAG
[compression_rag_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Contextual-Compression-with-RAG/main.ipynb
[compression_rag_ghost]: https://blog.lancedb.com/enhance-rag-integrate-contextual-compression-and-filtering-for-precision-a29d4a810301/
[flare_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR
[flare_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR/main.ipynb
[flare_ghost]: https://blog.lancedb.com/better-rag-with-active-retrieval-augmented-generation-flare-3b66646e2a9f/
[query_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/QueryExpansion&Reranker
[query_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/QueryExpansion&Reranker/main.ipynb
[fusion_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/RAG_Fusion
[fusion_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/RAG_Fusion/main.ipynb
[agentic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG
[agentic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG/main.ipynb

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**Recommender Systems: Personalized Discovery🍿📺**
==============================================================
Deliver personalized experiences with Recommender Systems. 🎁
**Technical Overview📜**
🔍️ LanceDB's powerful vector database capabilities can efficiently store and query item embeddings. Recommender Systems can utilize it and provide personalized recommendations based on user preferences 🤝 and item features 📊 and therefore enhance the user experience.🗂️
| **Recommender System** | **Description** | **Links** |
| ---------------------- | --------------- | --------- |
| **Movie Recommender System🎬** | 🤝 Use **collaborative filtering** to predict user preferences, assuming similar users will like similar movies, and leverage **Singular Value Decomposition** (SVD) from Numpy for precise matrix factorization and accurate recommendations📊 | [![Github](../../assets/github.svg)][movie_github] <br>[![Open In Collab](../../assets/colab.svg)][movie_colab] <br>[![Python](../../assets/python.svg)][movie_python] |
| **🎥 Movie Recommendation with Genres** | 🔍 Creates movie embeddings using **Doc2Vec**, capturing genre and characteristic nuances, and leverages VectorDB for efficient storage and querying, enabling accurate genre classification and personalized movie recommendations through **similarity searches**🎥 | [![Github](../../assets/github.svg)][genre_github] <br>[![Open In Collab](../../assets/colab.svg)][genre_colab] <br>[![Ghost](../../assets/ghost.svg)][genre_ghost] |
| **🛍️ Product Recommender using Collaborative Filtering and LanceDB** | 📈 Using **Collaborative Filtering** and **LanceDB** to analyze your past purchases, recommends products based on user's past purchases. Demonstrated with the Instacart dataset in our example🛒 | [![Github](../../assets/github.svg)][product_github] <br>[![Open In Collab](../../assets/colab.svg)][product_colab] <br>[![Python](../../assets/python.svg)][product_python] |
| **🔍 Arxiv Search with OpenCLIP and LanceDB** | 💡 Build a semantic search engine for **Arxiv papers** using **LanceDB**, and benchmarks its performance against traditional keyword-based search on **Nomic's Atlas**, to demonstrate the power of semantic search in finding relevant research papers📚 | [![Github](../../assets/github.svg)][arxiv_github] <br>[![Open In Collab](../../assets/colab.svg)][arxiv_colab] <br>[![Python](../../assets/python.svg)][arxiv_python] |
| **Food Recommendation System🍴** | 🍔 Build a food recommendation system with **LanceDB**, featuring vector-based recommendations, full-text search, hybrid search, and reranking model integration for personalized and accurate food suggestions👌 | [![Github](../../assets/github.svg)][food_github] <br>[![Open In Collab](../../assets/colab.svg)][food_colab] |
[movie_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/movie-recommender
[movie_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/movie-recommender/main.ipynb
[movie_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/movie-recommender/main.py
[genre_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/movie-recommendation-with-genres
[genre_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/movie-recommendation-with-genres/movie_recommendation_with_doc2vec_and_lancedb.ipynb
[genre_ghost]: https://blog.lancedb.com/movie-recommendation-system-using-lancedb-and-doc2vec/
[product_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/product-recommender
[product_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/product-recommender/main.ipynb
[product_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/product-recommender/main.py
[arxiv_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/arxiv-recommender
[arxiv_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/arxiv-recommender/main.ipynb
[arxiv_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/arxiv-recommender/main.py
[food_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Food_recommendation
[food_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Food_recommendation/main.ipynb

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**Vector Search: Efficient Retrieval 🔓👀**
====================================================================
Vector search with LanceDB, is a solution for efficient and accurate similarity searches in large datasets 📊.
**Vector Search Capabilities in LanceDB🔝**
LanceDB implements vector search algorithms for efficient document retrieval and analysis 📊. This enables fast and accurate discovery of relevant documents, leveraging dense vector representations 🤖. The platform supports scalable indexing and querying of high-dimensional vector spaces, facilitating precise document matching and retrieval 📈.
| **Vector Search** | **Description** | **Links** |
|:-----------------|:---------------|:---------|
| **Inbuilt Hybrid Search 🔄** | Perform hybrid search in **LanceDB** by combining the results of semantic and full-text search via a reranking algorithm of your choice 📊 | [![Github](../../assets/github.svg)][inbuilt_hybrid_search_github] <br>[![Open In Collab](../../assets/colab.svg)][inbuilt_hybrid_search_colab] |
| **Hybrid Search with BM25 and LanceDB 💡** | Use **Synergizes BM25's** keyword-focused precision (term frequency, document length normalization, bias-free retrieval) with **LanceDB's** semantic understanding (contextual analysis, query intent alignment) for nuanced search results in complex datasets 📈 | [![Github](../../assets/github.svg)][BM25_github] <br>[![Open In Collab](../../assets/colab.svg)][BM25_colab] <br>[![Ghost](../../assets/ghost.svg)][BM25_ghost] |
| **NER-powered Semantic Search 🔎** | Extract and identify essential information from text with Named Entity Recognition **(NER)** methods: Dictionary-Based, Rule-Based, and Deep Learning-Based, to accurately extract and categorize entities, enabling precise semantic search results 🗂️ | [![Github](../../assets/github.svg)][NER_github] <br>[![Open In Collab](../../assets/colab.svg)][NER_colab] <br>[![Ghost](../../assets/ghost.svg)][NER_ghost]|
| **Audio Similarity Search using Vector Embeddings 🎵** | Create vector **embeddings of audio files** to find similar audio content, enabling efficient audio similarity search and retrieval in **LanceDB's** vector store 📻 |[![Github](../../assets/github.svg)][audio_search_github] <br>[![Open In Collab](../../assets/colab.svg)][audio_search_colab] <br>[![Python](../../assets/python.svg)][audio_search_python]|
| **LanceDB Embeddings API: Multi-lingual Semantic Search 🌎** | Build a universal semantic search table with **LanceDB's Embeddings API**, supporting multiple languages (e.g., English, French) using **cohere's** multi-lingual model, for accurate cross-lingual search results 📄 | [![Github](../../assets/github.svg)][mls_github] <br>[![Open In Collab](../../assets/colab.svg)][mls_colab] <br>[![Python](../../assets/python.svg)][mls_python] |
| **Facial Recognition: Face Embeddings 🤖** | Detect, crop, and embed faces using Facenet, then store and query face embeddings in **LanceDB** for efficient facial recognition and top-K matching results 👥 | [![Github](../../assets/github.svg)][fr_github] <br>[![Open In Collab](../../assets/colab.svg)][fr_colab] |
| **Sentiment Analysis: Hotel Reviews 🏨** | Analyze customer sentiments towards the hotel industry using **BERT models**, storing sentiment labels, scores, and embeddings in **LanceDB**, enabling queries on customer opinions and potential areas for improvement 💬 | [![Github](../../assets/github.svg)][sentiment_analysis_github] <br>[![Open In Collab](../../assets/colab.svg)][sentiment_analysis_colab] <br>[![Ghost](../../assets/ghost.svg)][sentiment_analysis_ghost] |
| **Vector Arithmetic with LanceDB ⚖️** | Perform **vector arithmetic** on embeddings, enabling complex relationships and nuances in data to be captured, and simplifying the process of retrieving semantically similar results 📊 | [![Github](../../assets/github.svg)][arithmetic_github] <br>[![Open In Collab](../../assets/colab.svg)][arithmetic_colab] <br>[![Ghost](../../assets/ghost.svg)][arithmetic_ghost] |
| **Imagebind Demo 🖼️** | Explore the multi-modal capabilities of **Imagebind** through a Gradio app, use **LanceDB API** for seamless image search and retrieval experiences 📸 | [![Github](../../assets/github.svg)][imagebind_github] <br> [![Open in Spaces](../../assets/open_hf_space.svg)][imagebind_huggingface] |
| **Search Engine using SAM & CLIP 🔍** | Build a search engine within an image using **SAM** and **CLIP** models, enabling object-level search and retrieval, with LanceDB indexing and search capabilities to find the closest match between image embeddings and user queries 📸 | [![Github](../../assets/github.svg)][swi_github] <br>[![Open In Collab](../../assets/colab.svg)][swi_colab] <br>[![Ghost](../../assets/ghost.svg)][swi_ghost] |
| **Zero Shot Object Localization and Detection with CLIP 🔎** | Perform object detection on images using **OpenAI's CLIP**, enabling zero-shot localization and detection of objects, with capabilities to split images into patches, parse with CLIP, and plot bounding boxes 📊 | [![Github](../../assets/github.svg)][zsod_github] <br>[![Open In Collab](../../assets/colab.svg)][zsod_colab] |
| **Accelerate Vector Search with OpenVINO 🚀** | Boost vector search applications using **OpenVINO**, achieving significant speedups with **CLIP** for text-to-image and image-to-image searching, through PyTorch model optimization, FP16 and INT8 format conversion, and quantization with **OpenVINO NNCF** 📈 | [![Github](../../assets/github.svg)][openvino_github] <br>[![Open In Collab](../../assets/colab.svg)][openvino_colab] <br>[![Ghost](../../assets/ghost.svg)][openvino_ghost] |
| **Zero-Shot Image Classification with CLIP and LanceDB 📸** | Achieve zero-shot image classification using **CLIP** and **LanceDB**, enabling models to classify images without prior training on specific use cases, unlocking flexible and adaptable image classification capabilities 🔓 | [![Github](../../assets/github.svg)][zsic_github] <br>[![Open In Collab](../../assets/colab.svg)][zsic_colab] <br>[![Ghost](../../assets/ghost.svg)][zsic_ghost] |
[inbuilt_hybrid_search_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Inbuilt-Hybrid-Search
[inbuilt_hybrid_search_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Inbuilt-Hybrid-Search/Inbuilt_Hybrid_Search_with_LanceDB.ipynb
[BM25_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Hybrid_search_bm25_lancedb
[BM25_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Hybrid_search_bm25_lancedb/main.ipynb
[BM25_ghost]: https://blog.lancedb.com/hybrid-search-combining-bm25-and-semantic-search-for-better-results-with-lan-1358038fe7e6
[NER_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/NER-powered-Semantic-Search
[NER_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/NER-powered-Semantic-Search/NER_powered_Semantic_Search_with_LanceDB.ipynb
[NER_ghost]: https://blog.lancedb.com/ner-powered-semantic-search-using-lancedb-51051dc3e493
[audio_search_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/audio_search
[audio_search_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/audio_search/main.ipynb
[audio_search_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/audio_search/main.py
[mls_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa
[mls_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa/main.ipynb
[mls_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa/main.py
[fr_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/facial_recognition
[fr_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/facial_recognition/main.ipynb
[sentiment_analysis_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Sentiment-Analysis-Analyse-Hotel-Reviews
[sentiment_analysis_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Sentiment-Analysis-Analyse-Hotel-Reviews/Sentiment_Analysis_using_LanceDB.ipynb
[sentiment_analysis_ghost]: https://blog.lancedb.com/sentiment-analysis-using-lancedb-2da3cb1e3fa6
[arithmetic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Vector-Arithmetic-with-LanceDB
[arithmetic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Vector-Arithmetic-with-LanceDB/main.ipynb
[arithmetic_ghost]: https://blog.lancedb.com/vector-arithmetic-with-lancedb-an-intro-to-vector-embeddings/
[imagebind_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/imagebind_demo
[imagebind_huggingface]: https://huggingface.co/spaces/raghavd99/imagebind2
[swi_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/search-within-images-with-sam-and-clip
[swi_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/search-within-images-with-sam-and-clip/main.ipynb
[swi_ghost]: https://blog.lancedb.com/search-within-an-image-331b54e4285e
[zsod_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/zero-shot-object-detection-CLIP
[zsod_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/zero-shot-object-detection-CLIP/zero_shot_object_detection_clip.ipynb
[openvino_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Accelerate-Vector-Search-Applications-Using-OpenVINO
[openvino_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Accelerate-Vector-Search-Applications-Using-OpenVINO/clip_text_image_search.ipynb
[openvino_ghost]: https://blog.lancedb.com/accelerate-vector-search-applications-using-openvino-lancedb/
[zsic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/zero-shot-image-classification
[zsic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/zero-shot-image-classification/main.ipynb
[zsic_ghost]: https://blog.lancedb.com/zero-shot-image-classification-with-vector-search/

View File

@@ -25,8 +25,8 @@ s3://eto-public/datasets/sift/vec_data.lance
Then, we can write a quick Python script to populate our LanceDB Table:
```python
import pylance
sift_dataset = pylance.dataset("/path/to/local/vec_data.lance")
import lance
sift_dataset = lance.dataset("/path/to/local/vec_data.lance")
df = sift_dataset.to_table().to_pandas()
import lancedb

View File

@@ -1,9 +1,14 @@
# Full-text search
LanceDB provides support for full-text search via [Tantivy](https://github.com/quickwit-oss/tantivy) (currently Python only), allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions. Our goal is to push the FTS integration down to the Rust level in the future, so that it's available for Rust and JavaScript users as well. Follow along at [this Github issue](https://github.com/lancedb/lance/issues/1195)
LanceDB provides support for full-text search via Lance (before via [Tantivy](https://github.com/quickwit-oss/tantivy) (Python only)), allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions.
Currently, the Lance full text search is missing some features that are in the Tantivy full text search. This includes phrase queries, re-ranking, and customizing the tokenizer. Thus, in Python, Tantivy is still the default way to do full text search and many of the instructions below apply just to Tantivy-based indices.
## Installation
## Installation (Only for Tantivy-based FTS)
!!! note
No need to install the tantivy dependency if using native FTS
To use full-text search, install the dependency [`tantivy-py`](https://github.com/quickwit-oss/tantivy-py):
@@ -14,42 +19,83 @@ pip install tantivy==0.20.1
## Example
Consider that we have a LanceDB table named `my_table`, whose string column `text` we want to index and query via keyword search.
Consider that we have a LanceDB table named `my_table`, whose string column `text` we want to index and query via keyword search, the FTS index must be created before you can search via keywords.
```python
import lancedb
=== "Python"
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
```python
import lancedb
table = db.create_table(
"my_table",
data=[
{"vector": [3.1, 4.1], "text": "Frodo was a happy puppy"},
{"vector": [5.9, 26.5], "text": "There are several kittens playing"},
],
)
```
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
## Create FTS index on single column
table = db.create_table(
"my_table",
data=[
{"vector": [3.1, 4.1], "text": "Frodo was a happy puppy"},
{"vector": [5.9, 26.5], "text": "There are several kittens playing"},
],
)
The FTS index must be created before you can search via keywords.
# passing `use_tantivy=False` to use lance FTS index
# `use_tantivy=True` by default
table.create_fts_index("text")
table.search("puppy").limit(10).select(["text"]).to_list()
# [{'text': 'Frodo was a happy puppy', '_score': 0.6931471824645996}]
# ...
```
```python
table.create_fts_index("text")
```
=== "TypeScript"
To search an FTS index via keywords, LanceDB's `table.search` accepts a string as input:
```typescript
import * as lancedb from "@lancedb/lancedb";
const uri = "data/sample-lancedb"
const db = await lancedb.connect(uri);
```python
table.search("puppy").limit(10).select(["text"]).to_list()
```
const data = [
{ vector: [3.1, 4.1], text: "Frodo was a happy puppy" },
{ vector: [5.9, 26.5], text: "There are several kittens playing" },
];
const tbl = await db.createTable("my_table", data, { mode: "overwrite" });
await tbl.createIndex("text", {
config: lancedb.Index.fts(),
});
This returns the result as a list of dictionaries as follows.
await tbl
.search("puppy", queryType="fts")
.select(["text"])
.limit(10)
.toArray();
```
```python
[{'text': 'Frodo was a happy puppy', 'score': 0.6931471824645996}]
```
=== "Rust"
```rust
let uri = "data/sample-lancedb";
let db = connect(uri).execute().await?;
let initial_data: Box<dyn RecordBatchReader + Send> = create_some_records()?;
let tbl = db
.create_table("my_table", initial_data)
.execute()
.await?;
tbl
.create_index(&["text"], Index::FTS(FtsIndexBuilder::default()))
.execute()
.await?;
tbl
.query()
.full_text_search(FullTextSearchQuery::new("puppy".to_owned()))
.select(lancedb::query::Select::Columns(vec!["text".to_owned()]))
.limit(10)
.execute()
.await?;
```
It would search on all indexed columns by default, so it's useful when there are multiple indexed columns.
For now, this is supported in tantivy way only.
Passing `fts_columns="text"` if you want to specify the columns to search, but it's not available for Tantivy-based full text search.
!!! note
LanceDB automatically searches on the existing FTS index if the input to the search is of type `str`. If you provide a vector as input, LanceDB will search the ANN index instead.
@@ -57,20 +103,33 @@ This returns the result as a list of dictionaries as follows.
## Tokenization
By default the text is tokenized by splitting on punctuation and whitespaces and then removing tokens that are longer than 40 chars. For more language specific tokenization then provide the argument tokenizer_name with the 2 letter language code followed by "_stem". So for english it would be "en_stem".
```python
table.create_fts_index("text", tokenizer_name="en_stem")
```
For now, only the Tantivy-based FTS index supports to specify the tokenizer, so it's only available in Python with `use_tantivy=True`.
The following [languages](https://docs.rs/tantivy/latest/tantivy/tokenizer/enum.Language.html) are currently supported.
=== "use_tantivy=True"
```python
table.create_fts_index("text", use_tantivy=True, tokenizer_name="en_stem")
```
=== "use_tantivy=False"
[**Not supported yet**](https://github.com/lancedb/lance/issues/1195)
the following [languages](https://docs.rs/tantivy/latest/tantivy/tokenizer/enum.Language.html) are currently supported.
## Index multiple columns
If you have multiple string columns to index, there's no need to combine them manually -- simply pass them all as a list to `create_fts_index`:
```python
table.create_fts_index(["text1", "text2"])
```
=== "use_tantivy=True"
```python
table.create_fts_index(["text1", "text2"])
```
=== "use_tantivy=False"
[**Not supported yet**](https://github.com/lancedb/lance/issues/1195)
Note that the search API call does not change - you can search over all indexed columns at once.
@@ -80,19 +139,48 @@ Currently the LanceDB full text search feature supports *post-filtering*, meanin
applied on top of the full text search results. This can be invoked via the familiar
`where` syntax:
```python
table.search("puppy").limit(10).where("meta='foo'").to_list()
```
=== "Python"
```python
table.search("puppy").limit(10).where("meta='foo'").to_list()
```
=== "TypeScript"
```typescript
await tbl
.search("apple")
.select(["id", "doc"])
.limit(10)
.where("meta='foo'")
.toArray();
```
=== "Rust"
```rust
table
.query()
.full_text_search(FullTextSearchQuery::new(words[0].to_owned()))
.select(lancedb::query::Select::Columns(vec!["doc".to_owned()]))
.limit(10)
.only_if("meta='foo'")
.execute()
.await?;
```
## Sorting
!!! warning "Warn"
Sorting is available for only Tantivy-based FTS
You can pre-sort the documents by specifying `ordering_field_names` when
creating the full-text search index. Once pre-sorted, you can then specify
`ordering_field_name` while searching to return results sorted by the given
field. For example,
field. For example,
```
table.create_fts_index(["text_field"], ordering_field_names=["sort_by_field"])
```python
table.create_fts_index(["text_field"], use_tantivy=True, ordering_field_names=["sort_by_field"])
(table.search("terms", ordering_field_name="sort_by_field")
.limit(20)
@@ -105,8 +193,8 @@ table.create_fts_index(["text_field"], ordering_field_names=["sort_by_field"])
error will be raised that looks like `ValueError: The field does not exist: xxx`
!!! note
The fields to sort on must be of typed unsigned integer, or else you will see
an error during indexing that looks like
The fields to sort on must be of typed unsigned integer, or else you will see
an error during indexing that looks like
`TypeError: argument 'value': 'float' object cannot be interpreted as an integer`.
!!! note
@@ -116,6 +204,9 @@ table.create_fts_index(["text_field"], ordering_field_names=["sort_by_field"])
## Phrase queries vs. terms queries
!!! warning "Warn"
Lance-based FTS doesn't support queries combining by boolean operators `OR`, `AND`.
For full-text search you can specify either a **phrase** query like `"the old man and the sea"`,
or a **terms** search query like `"(Old AND Man) AND Sea"`. For more details on the terms
query syntax, see Tantivy's [query parser rules](https://docs.rs/tantivy/latest/tantivy/query/struct.QueryParser.html).
@@ -142,7 +233,7 @@ enforce it in one of two ways:
1. Place the double-quoted query inside single quotes. For example, `table.search('"they could have been dogs OR cats"')` is treated as
a phrase query.
2. Explicitly declare the `phrase_query()` method. This is useful when you have a phrase query that
1. Explicitly declare the `phrase_query()` method. This is useful when you have a phrase query that
itself contains double quotes. For example, `table.search('the cats OR dogs were not really "pets" at all').phrase_query()`
is treated as a phrase query.
@@ -150,7 +241,7 @@ In general, a query that's declared as a phrase query will be wrapped in double
double quotes replaced by single quotes.
## Configurations
## Configurations (Only for Tantivy-based FTS)
By default, LanceDB configures a 1GB heap size limit for creating the index. You can
reduce this if running on a smaller node, or increase this for faster performance while
@@ -164,6 +255,8 @@ table.create_fts_index(["text1", "text2"], writer_heap_size=heap, replace=True)
## Current limitations
For that Tantivy-based FTS:
1. Currently we do not yet support incremental writes.
If you add data after FTS index creation, it won't be reflected
in search results until you do a full reindex.

View File

@@ -0,0 +1,108 @@
# Building Scalar Index
Similar to many SQL databases, LanceDB supports several types of Scalar indices to accelerate search
over scalar columns.
- `BTREE`: The most common type is BTREE. This index is inspired by the btree data structure
although only the first few layers of the btree are cached in memory.
It will perform well on columns with a large number of unique values and few rows per value.
- `BITMAP`: this index stores a bitmap for each unique value in the column.
This index is useful for columns with a finite number of unique values and many rows per value.
For example, columns that represent "categories", "labels", or "tags"
- `LABEL_LIST`: a special index that is used to index list columns whose values have a finite set of possibilities.
For example, a column that contains lists of tags (e.g. `["tag1", "tag2", "tag3"]`) can be indexed with a `LABEL_LIST` index.
| Data Type | Filter | Index Type |
| --------------------------------------------------------------- | ----------------------------------------- | ------------ |
| Numeric, String, Temporal | `<`, `=`, `>`, `in`, `between`, `is null` | `BTREE` |
| Boolean, numbers or strings with fewer than 1,000 unique values | `<`, `=`, `>`, `in`, `between`, `is null` | `BITMAP` |
| List of low cardinality of numbers or strings | `array_has_any`, `array_has_all` | `LABEL_LIST` |
=== "Python"
```python
import lancedb
books = [
{"book_id": 1, "publisher": "plenty of books", "tags": ["fantasy", "adventure"]},
{"book_id": 2, "publisher": "book town", "tags": ["non-fiction"]},
{"book_id": 3, "publisher": "oreilly", "tags": ["textbook"]}
]
db = lancedb.connect("./db")
table = db.create_table("books", books)
table.create_scalar_index("book_id") # BTree by default
table.create_scalar_index("publisher", index_type="BITMAP")
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data");
const tbl = await db.openTable("my_vectors");
await tbl.create_index("book_id");
await tlb.create_index("publisher", { config: lancedb.Index.bitmap() })
```
For example, the following scan will be faster if the column `my_col` has a scalar index:
=== "Python"
```python
import lancedb
table = db.open_table("books")
my_df = table.search().where("book_id = 2").to_pandas()
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data");
const tbl = await db.openTable("books");
await tbl
.query()
.where("book_id = 2")
.limit(10)
.toArray();
```
Scalar indices can also speed up scans containing a vector search or full text search, and a prefilter:
=== "Python"
```python
import lancedb
data = [
{"book_id": 1, "vector": [1, 2]},
{"book_id": 2, "vector": [3, 4]},
{"book_id": 3, "vector": [5, 6]}
]
table = db.create_table("book_with_embeddings", data)
(
table.search([1, 2])
.where("book_id != 3", prefilter=True)
.to_pandas()
)
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data/lance");
const tbl = await db.openTable("book_with_embeddings");
await tbl.search(Array(1536).fill(1.2))
.where("book_id != 3") // prefilter is default behavior.
.limit(10)
.toArray();
```

View File

@@ -32,28 +32,54 @@ LanceDB OSS supports object stores such as AWS S3 (and compatible stores), Azure
db = lancedb.connect("az://bucket/path")
```
=== "JavaScript"
=== "TypeScript"
AWS S3:
=== "@lancedb/lancedb"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
```
AWS S3:
Google Cloud Storage:
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path");
```
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("gs://bucket/path");
```
Google Cloud Storage:
Azure Blob Storage:
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("gs://bucket/path");
```
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("az://bucket/path");
```
Azure Blob Storage:
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("az://bucket/path");
```
=== "vectordb (deprecated)"
AWS S3:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
```
Google Cloud Storage:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("gs://bucket/path");
```
Azure Blob Storage:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("az://bucket/path");
```
In most cases, when running in the respective cloud and permissions are set up correctly, no additional configuration is required. When running outside of the respective cloud, authentication credentials must be provided. Credentials and other configuration options can be set in two ways: first, by setting environment variables. And second, by passing a `storage_options` object to the `connect` function. For example, to increase the request timeout to 60 seconds, you can set the `TIMEOUT` environment variable to `60s`:
@@ -78,13 +104,26 @@ If you only want this to apply to one particular connection, you can pass the `s
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path",
{storageOptions: {timeout: "60s"}});
```
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path", {
storageOptions: {timeout: "60s"}
});
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path", {
storageOptions: {timeout: "60s"}
});
```
Getting even more specific, you can set the `timeout` for only a particular table:
@@ -101,18 +140,33 @@ Getting even more specific, you can set the `timeout` for only a particular tabl
)
```
=== "JavaScript"
=== "TypeScript"
<!-- skip-test -->
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
=== "@lancedb/lancedb"
<!-- skip-test -->
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
=== "vectordb (deprecated)"
<!-- skip-test -->
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
!!! info "Storage option casing"
@@ -135,7 +189,6 @@ There are several options that can be set for all object stores, mostly related
| `proxy_ca_certificate` | PEM-formatted CA certificate for proxy connections. |
| `proxy_excludes` | List of hosts that bypass the proxy. This is a comma-separated list of domains and IP masks. Any subdomain of the provided domain will be bypassed. For example, `example.com, 192.168.1.0/24` would bypass `https://api.example.com`, `https://www.example.com`, and any IP in the range `192.168.1.0/24`. |
### AWS S3
To configure credentials for AWS S3, you can use the `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, and `AWS_SESSION_TOKEN` keys. Region can also be set, but it is not mandatory when using AWS.
@@ -155,21 +208,39 @@ These can be set as environment variables or passed in the `storage_options` par
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
}
}
}
);
```
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
}
}
);
```
Alternatively, if you are using AWS SSO, you can use the `AWS_PROFILE` and `AWS_DEFAULT_REGION` environment variables.
@@ -188,7 +259,6 @@ The following keys can be used as both environment variables or keys in the `sto
| `aws_sse_kms_key_id` | The KMS key ID to use for server-side encryption. If set, `aws_server_side_encryption` must be `"aws:kms"` or `"aws:kms:dsse"`. |
| `aws_sse_bucket_key_enabled` | Whether to use bucket keys for server-side encryption. |
!!! tip "Automatic cleanup for failed writes"
LanceDB uses [multi-part uploads](https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html) when writing data to S3 in order to maximize write speed. LanceDB will abort these uploads when it shuts down gracefully, such as when cancelled by keyboard interrupt. However, in the rare case that LanceDB crashes, it is possible that some data will be left lingering in your account. To cleanup this data, we recommend (as AWS themselves do) that you setup a lifecycle rule to delete in-progress uploads after 7 days. See the AWS guide:
@@ -265,6 +335,108 @@ For **read-only access**, LanceDB will need a policy such as:
}
```
#### DynamoDB Commit Store for concurrent writes
By default, S3 does not support concurrent writes. Having two or more processes
writing to the same table at the same time can lead to data corruption. This is
because S3, unlike other object stores, does not have any atomic put or copy
operation.
To enable concurrent writes, you can configure LanceDB to use a DynamoDB table
as a commit store. This table will be used to coordinate writes between
different processes. To enable this feature, you must modify your connection
URI to use the `s3+ddb` scheme and add a query parameter `ddbTableName` with the
name of the table to use.
=== "Python"
```python
import lancedb
db = await lancedb.connect_async(
"s3+ddb://bucket/path?ddbTableName=my-dynamodb-table",
)
```
=== "JavaScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3+ddb://bucket/path?ddbTableName=my-dynamodb-table",
);
```
The DynamoDB table must be created with the following schema:
- Hash key: `base_uri` (string)
- Range key: `version` (number)
You can create this programmatically with:
=== "Python"
<!-- skip-test -->
```python
import boto3
dynamodb = boto3.client("dynamodb")
table = dynamodb.create_table(
TableName=table_name,
KeySchema=[
{"AttributeName": "base_uri", "KeyType": "HASH"},
{"AttributeName": "version", "KeyType": "RANGE"},
],
AttributeDefinitions=[
{"AttributeName": "base_uri", "AttributeType": "S"},
{"AttributeName": "version", "AttributeType": "N"},
],
ProvisionedThroughput={"ReadCapacityUnits": 1, "WriteCapacityUnits": 1},
)
```
=== "JavaScript"
<!-- skip-test -->
```javascript
import {
CreateTableCommand,
DynamoDBClient,
} from "@aws-sdk/client-dynamodb";
const dynamodb = new DynamoDBClient({
region: CONFIG.awsRegion,
credentials: {
accessKeyId: CONFIG.awsAccessKeyId,
secretAccessKey: CONFIG.awsSecretAccessKey,
},
endpoint: CONFIG.awsEndpoint,
});
const command = new CreateTableCommand({
TableName: table_name,
AttributeDefinitions: [
{
AttributeName: "base_uri",
AttributeType: "S",
},
{
AttributeName: "version",
AttributeType: "N",
},
],
KeySchema: [
{ AttributeName: "base_uri", KeyType: "HASH" },
{ AttributeName: "version", KeyType: "RANGE" },
],
ProvisionedThroughput: {
ReadCapacityUnits: 1,
WriteCapacityUnits: 1,
},
});
await client.send(command);
```
#### S3-compatible stores
LanceDB can also connect to S3-compatible stores, such as MinIO. To do so, you must specify both region and endpoint:
@@ -282,20 +454,37 @@ LanceDB can also connect to S3-compatible stores, such as MinIO. To do so, you m
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
}
}
}
);
```
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
}
}
);
```
This can also be done with the ``AWS_ENDPOINT`` and ``AWS_DEFAULT_REGION`` environment variables.
@@ -326,21 +515,37 @@ To configure LanceDB to use an S3 Express endpoint, you must set the storage opt
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
}
}
}
);
```
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
}
}
);
```
### Google Cloud Storage
@@ -359,26 +564,40 @@ GCS credentials are configured by setting the `GOOGLE_SERVICE_ACCOUNT` environme
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
}
}
}
);
```
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
}
}
);
```
!!! info "HTTP/2 support"
By default, GCS uses HTTP/1 for communication, as opposed to HTTP/2. This improves maximum throughput significantly. However, if you wish to use HTTP/2 for some reason, you can set the environment variable `HTTP1_ONLY` to `false`.
The following keys can be used as both environment variables or keys in the `storage_options` parameter:
<!-- source: https://docs.rs/object_store/latest/object_store/gcp/enum.GoogleConfigKey.html -->
@@ -388,7 +607,6 @@ The following keys can be used as both environment variables or keys in the `sto
| ``google_service_account_key`` | The serialized service account key. |
| ``google_application_credentials`` | Path to the application credentials. |
### Azure Blob Storage
Azure Blob Storage credentials can be configured by setting the `AZURE_STORAGE_ACCOUNT_NAME`and `AZURE_STORAGE_ACCOUNT_KEY` environment variables. Alternatively, you can pass the account name and key in the `storage_options` parameter:
@@ -407,20 +625,37 @@ Azure Blob Storage credentials can be configured by setting the `AZURE_STORAGE_A
)
```
=== "JavaScript"
=== "TypeScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
}
}
}
);
```
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
}
}
);
```
These keys can be used as both environment variables or keys in the `storage_options` parameter:
@@ -445,4 +680,4 @@ These keys can be used as both environment variables or keys in the `storage_opt
| ``azure_use_azure_cli`` | Use azure cli for acquiring access token. |
| ``azure_disable_tagging`` | Disables tagging objects. This can be desirable if not supported by the backing store. |
<!-- TODO: demonstrate how to configure networked file systems for optimal performance -->
<!-- TODO: demonstrate how to configure networked file systems for optimal performance -->

View File

@@ -3,32 +3,46 @@
A Table is a collection of Records in a LanceDB Database. Tables in Lance have a schema that defines the columns and their types. These schemas can include nested columns and can evolve over time.
This guide will show how to create tables, insert data into them, and update the data.
This guide will show how to create tables, insert data into them, and update the data.
## Creating a LanceDB Table
Initialize a LanceDB connection and create a table
=== "Python"
Initialize a LanceDB connection and create a table using one of the many methods listed below.
```python
import lancedb
db = lancedb.connect("./.lancedb")
```
=== "Javascript"
Initialize a VectorDB connection and create a table using one of the many methods listed below.
```javascript
const lancedb = require("vectordb");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
LanceDB allows ingesting data from various sources - `dict`, `list[dict]`, `pd.DataFrame`, `pa.Table` or a `Iterator[pa.RecordBatch]`. Let's take a look at some of the these.
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
import * as lancedb from "@lancedb/lancedb";
import * as arrow from "apache-arrow";
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
=== "vectordb (deprecated)"
```typescript
const lancedb = require("vectordb");
const arrow = require("apache-arrow");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
### From list of tuples or dictionaries
=== "Python"
@@ -45,102 +59,150 @@ This guide will show how to create tables, insert data into them, and update the
db["my_table"].head()
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default.
If the table already exists, LanceDB will raise an error by default.
`create_table` supports an optional `exist_ok` parameter. When set to True
and the table exists, then it simply opens the existing table. The data you
passed in will NOT be appended to the table in that case.
```python
db.create_table("name", data, exist_ok=True)
```
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode="overwrite" to the createTable function.
```python
db.create_table("name", data, mode="overwrite")
```
=== "Javascript"
You can create a LanceDB table in JavaScript using an array of JSON records as follows.
```javascript
const tb = await db.createTable("my_table", [{
"vector": [3.1, 4.1],
"item": "foo",
"price": 10.0
}, {
"vector": [5.9, 26.5],
"item": "bar",
"price": 20.0
}]);
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default. If you want to overwrite the table, you need to specify the `WriteMode` in the createTable function.
```javascript
const table = await con.createTable(tableName, data, { writeMode: WriteMode.Overwrite })
```python
db.create_table("name", data, exist_ok=True)
```
### From a Pandas DataFrame
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode="overwrite" to the createTable function.
```python
import pandas as pd
data = pd.DataFrame({
"vector": [[1.1, 1.2, 1.3, 1.4], [0.2, 1.8, 0.4, 3.6]],
"lat": [45.5, 40.1],
"long": [-122.7, -74.1]
})
db.create_table("my_table", data)
db["my_table"].head()
db.create_table("name", data, mode="overwrite")
```
!!! info "Note"
=== "Typescript[^1]"
You can create a LanceDB table in JavaScript using an array of records as follows.
=== "@lancedb/lancedb"
```ts
--8<-- "nodejs/examples/basic.ts:create_table"
```
This will infer the schema from the provided data. If you want to explicitly provide a schema, you can use `apache-arrow` to declare a schema
```ts
--8<-- "nodejs/examples/basic.ts:create_table_with_schema"
```
!!! info "Note"
`createTable` supports an optional `existsOk` parameter. When set to true
and the table exists, then it simply opens the existing table. The data you
passed in will NOT be appended to the table in that case.
```ts
--8<-- "nodejs/examples/basic.ts:create_table_exists_ok"
```
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode: "overwrite" to the createTable function.
```ts
--8<-- "nodejs/examples/basic.ts:create_table_overwrite"
```
=== "vectordb (deprecated)"
```ts
--8<-- "docs/src/basic_legacy.ts:create_table"
```
This will infer the schema from the provided data. If you want to explicitly provide a schema, you can use apache-arrow to declare a schema
```ts
--8<-- "docs/src/basic_legacy.ts:create_table_with_schema"
```
!!! warning
`existsOk` is not available in `vectordb`
If the table already exists, vectordb will raise an error by default.
You can use `writeMode: WriteMode.Overwrite` to overwrite the table.
But this will delete the existing table and create a new one with the same name.
Sometimes you want to make sure that you start fresh.
If you want to overwrite the table, you can pass in `writeMode: lancedb.WriteMode.Overwrite` to the createTable function.
```ts
const table = await con.createTable(tableName, data, {
writeMode: WriteMode.Overwrite
})
```
### From a Pandas DataFrame
```python
import pandas as pd
data = pd.DataFrame({
"vector": [[1.1, 1.2, 1.3, 1.4], [0.2, 1.8, 0.4, 3.6]],
"lat": [45.5, 40.1],
"long": [-122.7, -74.1]
})
db.create_table("my_table", data)
db["my_table"].head()
```
!!! info "Note"
Data is converted to Arrow before being written to disk. For maximum control over how data is saved, either provide the PyArrow schema to convert to or else provide a PyArrow Table directly.
The **`vector`** column needs to be a [Vector](../python/pydantic.md#vector-field) (defined as [pyarrow.FixedSizeList](https://arrow.apache.org/docs/python/generated/pyarrow.list_.html)) type.
The **`vector`** column needs to be a [Vector](../python/pydantic.md#vector-field) (defined as [pyarrow.FixedSizeList](https://arrow.apache.org/docs/python/generated/pyarrow.list_.html)) type.
```python
custom_schema = pa.schema([
pa.field("vector", pa.list_(pa.float32(), 4)),
pa.field("lat", pa.float32()),
pa.field("long", pa.float32())
])
```python
custom_schema = pa.schema([
pa.field("vector", pa.list_(pa.float32(), 4)),
pa.field("lat", pa.float32()),
pa.field("long", pa.float32())
])
table = db.create_table("my_table", data, schema=custom_schema)
```
table = db.create_table("my_table", data, schema=custom_schema)
```
### From a Polars DataFrame
LanceDB supports [Polars](https://pola.rs/), a modern, fast DataFrame library
written in Rust. Just like in Pandas, the Polars integration is enabled by PyArrow
under the hood. A deeper integration between LanceDB Tables and Polars DataFrames
is on the way.
LanceDB supports [Polars](https://pola.rs/), a modern, fast DataFrame library
written in Rust. Just like in Pandas, the Polars integration is enabled by PyArrow
under the hood. A deeper integration between LanceDB Tables and Polars DataFrames
is on the way.
```python
import polars as pl
```python
import polars as pl
data = pl.DataFrame({
"vector": [[3.1, 4.1], [5.9, 26.5]],
"item": ["foo", "bar"],
"price": [10.0, 20.0]
})
table = db.create_table("pl_table", data=data)
```
data = pl.DataFrame({
"vector": [[3.1, 4.1], [5.9, 26.5]],
"item": ["foo", "bar"],
"price": [10.0, 20.0]
})
table = db.create_table("pl_table", data=data)
```
### From an Arrow Table
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports float16 data type!
=== "Python"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports float16 data type!
```python
import pyarrows as pa
import numpy as np
dim = 16
total = 2
schema = pa.schema(
@@ -160,13 +222,19 @@ This guide will show how to create tables, insert data into them, and update the
tbl = db.create_table("f16_tbl", data, schema=schema)
```
=== "Javascript"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports Float16 data type!
=== "Typescript[^1]"
```javascript
--8<-- "docs/src/basic_legacy.ts:create_f16_table"
```
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_f16_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_f16_table"
```
### From Pydantic Models
@@ -225,7 +293,7 @@ class NestedSchema(LanceModel):
tbl = db.create_table("nested_table", schema=NestedSchema, mode="overwrite")
```
This creates a struct column called "document" that has two subfields
This creates a struct column called "document" that has two subfields
called "content" and "source":
```
@@ -236,7 +304,7 @@ vector: fixed_size_list<item: float>[1536] not null
child 0, item: float
document: struct<content: string not null, source: string not null> not null
child 0, content: string not null
child 1, source: string not null
child 1, source: string not null
```
#### Validators
@@ -261,7 +329,7 @@ class TestModel(LanceModel):
@classmethod
def tz_must_match(cls, dt: datetime) -> datetime:
assert dt.tzinfo == tz
return dt
return dt
ok = TestModel(dt_with_tz=datetime.now(tz))
@@ -329,25 +397,25 @@ You can also use iterators of other types like Pandas DataFrame or Pylists direc
tbl = db.open_table("my_table")
```
=== "JavaScript"
=== "Typescript[^1]"
If you forget the name of your table, you can always get a listing of all table names.
```javascript
```typescript
console.log(await db.tableNames());
```
Then, you can open any existing tables.
```javascript
```typescript
const tbl = await db.openTable("my_table");
```
## Creating empty table
You can create an empty table for scenarios where you want to add data to the table later. An example would be when you want to collect data from a stream/external file and then add it to a table in batches.
=== "Python"
In Python, you can create an empty table for scenarios where you want to add data to the table later. An example would be when you want to collect data from a stream/external file and then add it to a table in batches.
```python
An empty table can be initialized via a PyArrow schema.
@@ -364,8 +432,8 @@ You can also use iterators of other types like Pandas DataFrame or Pylists direc
tbl = db.create_table("empty_table_add", schema=schema)
```
Alternatively, you can also use Pydantic to specify the schema for the empty table. Note that we do not
directly import `pydantic` but instead use `lancedb.pydantic` which is a subclass of `pydantic.BaseModel`
Alternatively, you can also use Pydantic to specify the schema for the empty table. Note that we do not
directly import `pydantic` but instead use `lancedb.pydantic` which is a subclass of `pydantic.BaseModel`
that has been extended to support LanceDB specific types like `Vector`.
```python
@@ -382,9 +450,23 @@ You can also use iterators of other types like Pandas DataFrame or Pylists direc
Once the empty table has been created, you can add data to it via the various methods listed in the [Adding to a table](#adding-to-a-table) section.
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_empty_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
## Adding to a table
After a table has been created, you can always add more data to it using the various methods available.
After a table has been created, you can always add more data to it usind the `add` method
=== "Python"
You can add any of the valid data structures accepted by LanceDB table, i.e, `dict`, `list[dict]`, `pd.DataFrame`, or `Iterator[pa.RecordBatch]`. Below are some examples.
@@ -472,9 +554,7 @@ After a table has been created, you can always add more data to it using the var
tbl.add(models)
```
=== "JavaScript"
=== "Typescript[^1]"
```javascript
await tbl.add(
@@ -530,15 +610,15 @@ Use the `delete()` method on tables to delete rows from a table. To choose which
# 0 3 [5.0, 6.0]
```
=== "JavaScript"
=== "Typescript[^1]"
```javascript
```ts
await tbl.delete('item = "fizz"')
```
### Deleting row with specific column value
```javascript
```ts
const con = await lancedb.connect("./.lancedb")
const data = [
{id: 1, vector: [1, 2]},
@@ -552,7 +632,7 @@ Use the `delete()` method on tables to delete rows from a table. To choose which
### Delete from a list of values
```javascript
```ts
const to_remove = [1, 5];
await tbl.delete(`id IN (${to_remove.join(",")})`)
await tbl.countRows() // Returns 1
@@ -609,26 +689,49 @@ This can be used to update zero to all rows depending on how many rows match the
2 2 [10.0, 10.0]
```
=== "JavaScript/Typescript"
=== "Typescript[^1]"
API Reference: [vectordb.Table.update](../javascript/interfaces/Table.md/#update)
=== "@lancedb/lancedb"
```javascript
const lancedb = require("vectordb");
API Reference: [lancedb.Table.update](../js/classes/Table.md/#update)
const db = await lancedb.connect("./.lancedb");
```ts
import * as lancedb from "@lancedb/lancedb";
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
const db = await lancedb.connect("./.lancedb");
await tbl.update({ where: "x = 2", values: {vector: [10, 10]} })
```
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
The `values` parameter is used to provide the new values for the columns as literal values. You can also use the `values_sql` / `valuesSql` parameter to provide SQL expressions for the new values. For example, you can use `values_sql="x + 1"` to increment the value of the `x` column by 1.
await tbl.update({vector: [10, 10]}, { where: "x = 2"})
```
=== "vectordb (deprecated)"
API Reference: [vectordb.Table.update](../javascript/interfaces/Table.md/#update)
```ts
const lancedb = require("vectordb");
const db = await lancedb.connect("./.lancedb");
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
await tbl.update({ where: "x = 2", values: {vector: [10, 10]} })
```
#### Updating using a sql query
The `values` parameter is used to provide the new values for the columns as literal values. You can also use the `values_sql` / `valuesSql` parameter to provide SQL expressions for the new values. For example, you can use `values_sql="x + 1"` to increment the value of the `x` column by 1.
=== "Python"
@@ -647,11 +750,17 @@ The `values` parameter is used to provide the new values for the columns as lite
2 3 [10.0, 10.0]
```
=== "JavaScript/Typescript"
=== "Typescript[^1]"
```javascript
await tbl.update({ valuesSql: { x: "x + 1" } })
```
=== "@lancedb/lancedb"
Coming Soon!
=== "vectordb (deprecated)"
```ts
await tbl.update({ valuesSql: { x: "x + 1" } })
```
!!! info "Note"
@@ -672,7 +781,7 @@ Use the `drop_table()` method on the database to remove a table.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
=== "Javascript/Typescript"
=== "TypeScript"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
@@ -697,7 +806,7 @@ There are three possible settings for `read_consistency_interval`:
This is only tune-able in LanceDB OSS. In LanceDB Cloud, readers are always eventually consistent.
=== "Python"
To set strong consistency, use `timedelta(0)`:
```python
@@ -719,33 +828,35 @@ There are three possible settings for `read_consistency_interval`:
```python
db = lancedb.connect("./.lancedb")
table = db.open_table("my_table")
# (Other writes happen to my_table from another process)
# Check for updates
table.checkout_latest()
```
=== "JavaScript/Typescript"
=== "Typescript[^1]"
To set strong consistency, use `0`:
```javascript
```ts
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 0 });
const table = await db.openTable("my_table");
```
For eventual consistency, specify the update interval as seconds:
```javascript
```ts
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 5 });
const table = await db.openTable("my_table");
```
<!-- Node doesn't yet support the version time travel: https://github.com/lancedb/lancedb/issues/1007
<!-- Node doesn't yet support the version time travel: https://github.com/lancedb/lancedb/issues/1007
Once it does, we can show manual consistency check for Node as well.
-->
## What's next?
Learn the best practices on creating an ANN index and getting the most out of it.
Learn the best practices on creating an ANN index and getting the most out of it.
[^1]: The `vectordb` package is a legacy package that is deprecated in favor of `@lancedb/lancedb`. The `vectordb` package will continue to receive bug fixes and security updates until September 2024. We recommend all new projects use `@lancedb/lancedb`. See the [migration guide](migration.md) for more information.

View File

@@ -1,4 +1,7 @@
## Improving retriever performance
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/lancedb_reranking.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
VectorDBs are used as retreivers in recommender or chatbot-based systems for retrieving relevant data based on user queries. For example, retriever is a critical component of Retrieval Augmented Generation (RAG) acrhitectures. In this section, we will discuss how to improve the performance of retrievers.
There are serveral ways to improve the performance of retrievers. Some of the common techniques are:

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@@ -1,4 +1,6 @@
Continuing from the previous example, we can now rerank the results using more complex rerankers.
Continuing from the previous section, we can now rerank the results using more complex rerankers.
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/lancedb_reranking.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
## Reranking search results
You can rerank any search results using a reranker. The syntax for reranking is as follows:

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@@ -0,0 +1,82 @@
## Finetuning the Embedding Model
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/embedding_tuner.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
Another way to improve retriever performance is to fine-tune the embedding model itself. Fine-tuning the embedding model can help in learning better representations for the documents and queries in the dataset. This can be particularly useful when the dataset is very different from the pre-trained data used to train the embedding model.
We'll use the same dataset as in the previous sections. Start off by splitting the dataset into training and validation sets:
```python
from sklearn.model_selection import train_test_split
train_df, validation_df = train_test_split("data_qa.csv", test_size=0.2, random_state=42)
train_df.to_csv("data_train.csv", index=False)
validation_df.to_csv("data_val.csv", index=False)
```
You can use any tuning API to fine-tune embedding models. In this example, we'll utilise Llama-index as it also comes with utilities for synthetic data generation and training the model.
Then parse the dataset as llama-index text nodes and generate synthetic QA pairs from each node.
```python
from llama_index.core.node_parser import SentenceSplitter
from llama_index.readers.file import PagedCSVReader
from llama_index.finetuning import generate_qa_embedding_pairs
from llama_index.core.evaluation import EmbeddingQAFinetuneDataset
def load_corpus(file):
loader = PagedCSVReader(encoding="utf-8")
docs = loader.load_data(file=Path(file))
parser = SentenceSplitter()
nodes = parser.get_nodes_from_documents(docs)
return nodes
from llama_index.llms.openai import OpenAI
train_dataset = generate_qa_embedding_pairs(
llm=OpenAI(model="gpt-3.5-turbo"), nodes=train_nodes, verbose=False
)
val_dataset = generate_qa_embedding_pairs(
llm=OpenAI(model="gpt-3.5-turbo"), nodes=val_nodes, verbose=False
)
```
Now we'll use `SentenceTransformersFinetuneEngine` engine to fine-tune the model. You can also use `sentence-transformers` or `transformers` library to fine-tune the model.
```python
from llama_index.finetuning import SentenceTransformersFinetuneEngine
finetune_engine = SentenceTransformersFinetuneEngine(
train_dataset,
model_id="BAAI/bge-small-en-v1.5",
model_output_path="tuned_model",
val_dataset=val_dataset,
)
finetune_engine.finetune()
embed_model = finetune_engine.get_finetuned_model()
```
This saves the fine tuned embedding model in `tuned_model` folder. This al
# Evaluation results
In order to eval the retriever, you can either use this model to ingest the data into LanceDB directly or llama-index's LanceDB integration to create a `VectorStoreIndex` and use it as a retriever.
On performing the same hit-rate evaluation as before, we see a significant improvement in the hit-rate across all query types.
### Baseline
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.640 |
| Full-text Search | 0.595 |
| Reranked Vector Search | 0.677 |
| Reranked Full-text Search | 0.672 |
| Hybrid Search (w/ CohereReranker) | 0.759|
### Fine-tuned model ( 2 iterations )
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.672 |
| Full-text Search | 0.595 |
| Reranked Vector Search | 0.754 |
| Reranked Full-text Search | 0.672|
| Hybrid Search (w/ CohereReranker) | 0.768 |

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@@ -43,200 +43,32 @@ table.create_fts_index("text")
# hybrid search with default re-ranker
results = table.search("flower moon", query_type="hybrid").to_pandas()
```
!!! Note
You can also pass the vector and text query manually. This is useful if you're not using the embedding API or if you're using a separate embedder service.
### Explicitly passing the vector and text query
```python
vector_query = [0.1, 0.2, 0.3, 0.4, 0.5]
text_query = "flower moon"
results = table.search(query_type="hybrid")
.vector(vector_query)
.text(text_query)
.limit(5)
.to_pandas()
By default, LanceDB uses `LinearCombinationReranker(weight=0.7)` to combine and rerank the results of semantic and full-text search. You can customize the hyperparameters as needed or write your own custom reranker. Here's how you can use any of the available rerankers:
```
By default, LanceDB uses `RRFReranker()`, which uses reciprocal rank fusion score, to combine and rerank the results of semantic and full-text search. You can customize the hyperparameters as needed or write your own custom reranker. Here's how you can use any of the available rerankers:
### `rerank()` arguments
* `normalize`: `str`, default `"score"`:
The method to normalize the scores. Can be "rank" or "score". If "rank", the scores are converted to ranks and then normalized. If "score", the scores are normalized directly.
* `reranker`: `Reranker`, default `LinearCombinationReranker(weight=0.7)`.
* `reranker`: `Reranker`, default `RRF()`.
The reranker to use. If not specified, the default reranker is used.
## Available Rerankers
LanceDB provides a number of re-rankers out of the box. You can use any of these re-rankers by passing them to the `rerank()` method. Here's a list of available re-rankers:
### Linear Combination Reranker
This is the default re-ranker used by LanceDB. It combines the results of semantic and full-text search using a linear combination of the scores. The weights for the linear combination can be specified. It defaults to 0.7, i.e, 70% weight for semantic search and 30% weight for full-text search.
LanceDB provides a number of re-rankers out of the box. You can use any of these re-rankers by passing them to the `rerank()` method.
Go to [Rerankers](../reranking/index.md) to learn more about using the available rerankers and implementing custom rerankers.
```python
from lancedb.rerankers import LinearCombinationReranker
reranker = LinearCombinationReranker(weight=0.3) # Use 0.3 as the weight for vector search
results = table.search("rebel", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `weight`: `float`, default `0.7`:
The weight to use for the semantic search score. The weight for the full-text search score is `1 - weights`.
* `fill`: `float`, default `1.0`:
The score to give to results that are only in one of the two result sets.This is treated as penalty, so a higher value means a lower score.
TODO: We should just hardcode this-- its pretty confusing as we invert scores to calculate final score
* `return_score` : str, default `"relevance"`
options are "relevance" or "all"
The type of score to return. If "relevance", will return only the `_relevance_score. If "all", will return all scores from the vector and FTS search along with the relevance score.
### Cohere Reranker
This re-ranker uses the [Cohere](https://cohere.ai/) API to combine the results of semantic and full-text search. You can use this re-ranker by passing `CohereReranker()` to the `rerank()` method. Note that you'll need to set the `COHERE_API_KEY` environment variable to use this re-ranker.
```python
from lancedb.rerankers import CohereReranker
reranker = CohereReranker()
results = table.search("vampire weekend", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : str, default `"rerank-english-v2.0"`
The name of the cross encoder model to use. Available cohere models are:
- rerank-english-v2.0
- rerank-multilingual-v2.0
* `column` : str, default `"text"`
The name of the column to use as input to the cross encoder model.
* `top_n` : str, default `None`
The number of results to return. If None, will return all results.
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### Cross Encoder Reranker
This reranker uses the [Sentence Transformers](https://www.sbert.net/) library to combine the results of semantic and full-text search. You can use it by passing `CrossEncoderReranker()` to the `rerank()` method.
```python
from lancedb.rerankers import CrossEncoderReranker
reranker = CrossEncoderReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model` : str, default `"cross-encoder/ms-marco-TinyBERT-L-6"`
The name of the cross encoder model to use. Available cross encoder models can be found [here](https://www.sbert.net/docs/pretrained_cross-encoders.html)
* `column` : str, default `"text"`
The name of the column to use as input to the cross encoder model.
* `device` : str, default `None`
The device to use for the cross encoder model. If None, will use "cuda" if available, otherwise "cpu".
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### ColBERT Reranker
This reranker uses the ColBERT model to combine the results of semantic and full-text search. You can use it by passing `ColbertrReranker()` to the `rerank()` method.
ColBERT reranker model calculates relevance of given docs against the query and don't take existing fts and vector search scores into account, so it currently only supports `return_score="relevance"`. By default, it looks for `text` column to rerank the results. But you can specify the column name to use as input to the cross encoder model as described below.
```python
from lancedb.rerankers import ColbertReranker
reranker = ColbertReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : `str`, default `"colbert-ir/colbertv2.0"`
The name of the cross encoder model to use.
* `column` : `str`, default `"text"`
The name of the column to use as input to the cross encoder model.
* `return_score` : `str`, default `"relevance"`
options are `"relevance"` or `"all"`. Only `"relevance"` is supported for now.
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### OpenAI Reranker
This reranker uses the OpenAI API to combine the results of semantic and full-text search. You can use it by passing `OpenaiReranker()` to the `rerank()` method.
!!! Note
This prompts chat model to rerank results which is not a dedicated reranker model. This should be treated as experimental.
!!! Tip
- You might run out of token limit so set the search `limits` based on your token limit.
- It is recommended to use gpt-4-turbo-preview, the default model, older models might lead to undesired behaviour
```python
from lancedb.rerankers import OpenaiReranker
reranker = OpenaiReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : `str`, default `"gpt-4-turbo-preview"`
The name of the cross encoder model to use.
* `column` : `str`, default `"text"`
The name of the column to use as input to the cross encoder model.
* `return_score` : `str`, default `"relevance"`
options are "relevance" or "all". Only "relevance" is supported for now.
* `api_key` : `str`, default `None`
The API key to use. If None, will use the OPENAI_API_KEY environment variable.
## Building Custom Rerankers
You can build your own custom reranker by subclassing the `Reranker` class and implementing the `rerank_hybrid()` method. Here's an example of a custom reranker that combines the results of semantic and full-text search using a linear combination of the scores.
The `Reranker` base interface comes with a `merge_results()` method that can be used to combine the results of semantic and full-text search. This is a vanilla merging algorithm that simply concatenates the results and removes the duplicates without taking the scores into consideration. It only keeps the first copy of the row encountered. This works well in cases that don't require the scores of semantic and full-text search to combine the results. If you want to use the scores or want to support `return_score="all"`, you'll need to implement your own merging algorithm.
```python
from lancedb.rerankers import Reranker
import pyarrow as pa
class MyReranker(Reranker):
def __init__(self, param1, param2, ..., return_score="relevance"):
super().__init__(return_score)
self.param1 = param1
self.param2 = param2
def rerank_hybrid(self, query: str, vector_results: pa.Table, fts_results: pa.Table):
# Use the built-in merging function
combined_result = self.merge_results(vector_results, fts_results)
# Do something with the combined results
# ...
# Return the combined results
return combined_result
```
### Example of a Custom Reranker
For the sake of simplicity let's build custom reranker that just enchances the Cohere Reranker by accepting a filter query, and accept other CohereReranker params as kwags.
```python
from typing import List, Union
import pandas as pd
from lancedb.rerankers import CohereReranker
class MofidifiedCohereReranker(CohereReranker):
def __init__(self, filters: Union[str, List[str]], **kwargs):
super().__init__(**kwargs)
filters = filters if isinstance(filters, list) else [filters]
self.filters = filters
def rerank_hybrid(self, query: str, vector_results: pa.Table, fts_results: pa.Table)-> pa.Table:
combined_result = super().rerank_hybrid(query, vector_results, fts_results)
df = combined_result.to_pandas()
for filter in self.filters:
df = df.query("not text.str.contains(@filter)")
return pa.Table.from_pandas(df)
```
!!! tip
The `vector_results` and `fts_results` are pyarrow tables. You can convert them to pandas dataframes using `to_pandas()` method and perform any operations you want. After you are done, you can convert the dataframe back to pyarrow table using `pa.Table.from_pandas()` method and return it.

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@@ -0,0 +1,142 @@
# dlt
[dlt](https://dlthub.com/docs/intro) is an open-source library that you can add to your Python scripts to load data from various and often messy data sources into well-structured, live datasets. dlt's [integration with LanceDB](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb) lets you ingest data from any source (databases, APIs, CSVs, dataframes, JSONs, and more) into LanceDB with a few lines of simple python code. The integration enables automatic normalization of nested data, schema inference, incremental loading and embedding the data. dlt also has integrations with several other tools like dbt, airflow, dagster etc. that can be inserted into your LanceDB workflow.
## How to ingest data into LanceDB
In this example, we will be fetching movie information from the [Open Movie Database (OMDb) API](https://www.omdbapi.com/) and loading it into a local LanceDB instance. To implement it, you will need an API key for the OMDb API (which can be created freely [here](https://www.omdbapi.com/apikey.aspx)).
1. **Install `dlt` with LanceDB extras:**
```sh
pip install dlt[lancedb]
```
2. **Inside an empty directory, initialize a `dlt` project with:**
```sh
dlt init rest_api lancedb
```
This will add all the files necessary to create a `dlt` pipeline that can ingest data from any REST API (ex: OMDb API) and load into LanceDB.
```text
├── .dlt
│ ├── config.toml
│ └── secrets.toml
├── rest_api
├── rest_api_pipeline.py
└── requirements.txt
```
dlt has a list of pre-built [sources](https://dlthub.com/docs/dlt-ecosystem/verified-sources/) like [SQL databases](https://dlthub.com/docs/dlt-ecosystem/verified-sources/sql_database), [REST APIs](https://dlthub.com/docs/dlt-ecosystem/verified-sources/rest_api), [Google Sheets](https://dlthub.com/docs/dlt-ecosystem/verified-sources/google_sheets), [Notion](https://dlthub.com/docs/dlt-ecosystem/verified-sources/notion) etc., that can be used out-of-the-box by running `dlt init <source_name> lancedb`. Since dlt is a python library, it is also very easy to modify these pre-built sources or to write your own custom source from scratch.
3. **Specify necessary credentials and/or embedding model details:**
In order to fetch data from the OMDb API, you will need to pass a valid API key into your pipeline. Depending on whether you're using LanceDB OSS or LanceDB cloud, you also may need to provide the necessary credentials to connect to the LanceDB instance. These can be pasted inside `.dlt/sercrets.toml`.
dlt's LanceDB integration also allows you to automatically embed the data during ingestion. Depending on the embedding model chosen, you may need to paste the necessary credentials inside `.dlt/sercrets.toml`:
```toml
[sources.rest_api]
api_key = "api_key" # Enter the API key for the OMDb API
[destination.lancedb]
embedding_model_provider = "sentence-transformers"
embedding_model = "all-MiniLM-L6-v2"
[destination.lancedb.credentials]
uri = ".lancedb"
api_key = "api_key" # API key to connect to LanceDB Cloud. Leave out if you are using LanceDB OSS.
embedding_model_provider_api_key = "embedding_model_provider_api_key" # Not needed for providers that don't need authentication (ollama, sentence-transformers).
```
See [here](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb#configure-the-destination) for more information and for a list of available models and model providers.
4. **Write the pipeline code inside `rest_api_pipeline.py`:**
The following code shows how you can configure dlt's REST API source to connect to the [OMDb API](https://www.omdbapi.com/), fetch all movies with the word "godzilla" in the title, and load it into a LanceDB table. The REST API source allows you to pull data from any API with minimal code, to learn more read the [dlt docs](https://dlthub.com/docs/dlt-ecosystem/verified-sources/rest_api).
```python
# Import necessary modules
import dlt
from rest_api import rest_api_source
# Configure the REST API source
movies_source = rest_api_source(
{
"client": {
"base_url": "https://www.omdbapi.com/",
"auth": { # authentication strategy for the OMDb API
"type": "api_key",
"name": "apikey",
"api_key": dlt.secrets["sources.rest_api.api_token"], # read API credentials directly from secrets.toml
"location": "query"
},
"paginator": { # pagination strategy for the OMDb API
"type": "page_number",
"base_page": 1,
"total_path": "totalResults",
"maximum_page": 5
}
},
"resources": [ # list of API endpoints to request
{
"name": "movie_search",
"endpoint": {
"path": "/",
"params": {
"s": "godzilla",
"type": "movie"
}
}
}
]
})
if __name__ == "__main__":
# Create a pipeline object
pipeline = dlt.pipeline(
pipeline_name='movies_pipeline',
destination='lancedb', # this tells dlt to load the data into LanceDB
dataset_name='movies_data_pipeline',
)
# Run the pipeline
load_info = pipeline.run(movies_source)
# pretty print the information on data that was loaded
print(load_info)
```
The script above will ingest the data into LanceDB as it is, i.e. without creating any embeddings. If we want to embed one of the fields (for example, `"Title"` that contains the movie titles), then we will use dlt's `lancedb_adapter` and modify the script as follows:
- Add the following import statement:
```python
from dlt.destinations.adapters import lancedb_adapter
```
- Modify the pipeline run like this:
```python
load_info = pipeline.run(
lancedb_adapter(
movies_source,
embed="Title",
)
)
```
This will use the embedding model specified inside `.dlt/secrets.toml` to embed the field `"Title"`.
5. **Install necessary dependencies:**
```sh
pip install -r requirements.txt
```
Note: You may need to install the dependencies for your embedding models separately.
```sh
pip install sentence-transformers
```
6. **Run the pipeline:**
Finally, running the following command will ingest the data into your LanceDB instance.
```sh
python custom_source.py
```
For more information and advanced usage of dlt's LanceDB integration, read [the dlt documentation](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb).

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@@ -2,7 +2,7 @@
![Illustration](../assets/langchain.png)
## Quick Start
You can load your document data using langchain's loaders, for this example we are using `TextLoader` and `OpenAIEmbeddings` as the embedding model.
You can load your document data using langchain's loaders, for this example we are using `TextLoader` and `OpenAIEmbeddings` as the embedding model. Checkout Complete example here - [LangChain demo](../notebooks/langchain_example.ipynb)
```python
import os
from langchain.document_loaders import TextLoader
@@ -38,6 +38,8 @@ The exhaustive list of parameters for `LanceDB` vector store are :
- `api_key`: (Optional) API key to use for LanceDB cloud database. Defaults to `None`.
- `region`: (Optional) Region to use for LanceDB cloud database. Only for LanceDB Cloud, defaults to `None`.
- `mode`: (Optional) Mode to use for adding data to the table. Defaults to `'overwrite'`.
- `reranker`: (Optional) The reranker to use for LanceDB.
- `relevance_score_fn`: (Optional[Callable[[float], float]]) Langchain relevance score function to be used. Defaults to `None`.
```python
db_url = "db://lang_test" # url of db you created
@@ -54,12 +56,14 @@ vector_store = LanceDB(
```
### Methods
To add texts and store respective embeddings automatically:
##### add_texts()
- `texts`: `Iterable` of strings to add to the vectorstore.
- `metadatas`: Optional `list[dict()]` of metadatas associated with the texts.
- `ids`: Optional `list` of ids to associate with the texts.
- `kwargs`: `Any`
This method adds texts and stores respective embeddings automatically.
```python
vector_store.add_texts(texts = ['test_123'], metadatas =[{'source' :'wiki'}])
@@ -74,7 +78,6 @@ pd_df.to_csv("docsearch.csv", index=False)
# you can also create a new vector store object using an older connection object:
vector_store = LanceDB(connection=tbl, embedding=embeddings)
```
For index creation make sure your table has enough data in it. An ANN index is ususally not needed for datasets ~100K vectors. For large-scale (>1M) or higher dimension vectors, it is beneficial to create an ANN index.
##### create_index()
- `col_name`: `Optional[str] = None`
- `vector_col`: `Optional[str] = None`
@@ -82,6 +85,8 @@ For index creation make sure your table has enough data in it. An ANN index is u
- `num_sub_vectors`: `Optional[int] = 96`
- `index_cache_size`: `Optional[int] = None`
This method creates an index for the vector store. For index creation make sure your table has enough data in it. An ANN index is ususally not needed for datasets ~100K vectors. For large-scale (>1M) or higher dimension vectors, it is beneficial to create an ANN index.
```python
# for creating vector index
vector_store.create_index(vector_col='vector', metric = 'cosine')
@@ -89,4 +94,108 @@ vector_store.create_index(vector_col='vector', metric = 'cosine')
# for creating scalar index(for non-vector columns)
vector_store.create_index(col_name='text')
```
```
##### similarity_search()
- `query`: `str`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `fts`: `Optional[bool] = False`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Return documents most similar to the query without relevance scores
```python
docs = docsearch.similarity_search(query)
print(docs[0].page_content)
```
##### similarity_search_by_vector()
- `embedding`: `List[float]`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Returns documents most similar to the query vector.
```python
docs = docsearch.similarity_search_by_vector(query)
print(docs[0].page_content)
```
##### similarity_search_with_score()
- `query`: `str`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `kwargs`: `Any`
Returns documents most similar to the query string with relevance scores, gets called by base class's `similarity_search_with_relevance_scores` which selects relevance score based on our `_select_relevance_score_fn`.
```python
docs = docsearch.similarity_search_with_relevance_scores(query)
print("relevance score - ", docs[0][1])
print("text- ", docs[0][0].page_content[:1000])
```
##### similarity_search_by_vector_with_relevance_scores()
- `embedding`: `List[float]`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Return documents most similar to the query vector with relevance scores.
Relevance score
```python
docs = docsearch.similarity_search_by_vector_with_relevance_scores(query_embedding)
print("relevance score - ", docs[0][1])
print("text- ", docs[0][0].page_content[:1000])
```
##### max_marginal_relevance_search()
- `query`: `str`
- `k`: `Optional[int] = None`
- `fetch_k` : Number of Documents to fetch to pass to MMR algorithm, `Optional[int] = None`
- `lambda_mult`: Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5. `float = 0.5`
- `filter`: `Optional[Dict[str, str]] = None`
- `kwargs`: `Any`
Returns docs selected using the maximal marginal relevance(MMR).
Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.
Similarly, `max_marginal_relevance_search_by_vector()` function returns docs most similar to the embedding passed to the function using MMR. instead of a string query you need to pass the embedding to be searched for.
```python
result = docsearch.max_marginal_relevance_search(
query="text"
)
result_texts = [doc.page_content for doc in result]
print(result_texts)
## search by vector :
result = docsearch.max_marginal_relevance_search_by_vector(
embeddings.embed_query("text")
)
result_texts = [doc.page_content for doc in result]
print(result_texts)
```
##### add_images()
- `uris` : File path to the image. `List[str]`.
- `metadatas` : Optional list of metadatas. `(Optional[List[dict]], optional)`
- `ids` : Optional list of IDs. `(Optional[List[str]], optional)`
Adds images by automatically creating their embeddings and adds them to the vectorstore.
```python
vec_store.add_images(uris=image_uris)
# here image_uris are local fs paths to the images.
```

View File

@@ -2,7 +2,8 @@
![Illustration](../assets/llama-index.jpg)
## Quick start
You would need to install the integration via `pip install llama-index-vector-stores-lancedb` in order to use it. You can run the below script to try it out :
You would need to install the integration via `pip install llama-index-vector-stores-lancedb` in order to use it.
You can run the below script to try it out :
```python
import logging
import sys
@@ -43,6 +44,8 @@ retriever = index.as_retriever(vector_store_kwargs={"where": lance_filter})
response = retriever.retrieve("What did the author do growing up?")
```
Checkout Complete example here - [LlamaIndex demo](../notebooks/LlamaIndex_example.ipynb)
### Filtering
For metadata filtering, you can use a Lance SQL-like string filter as demonstrated in the example above. Additionally, you can also filter using the `MetadataFilters` class from LlamaIndex:
```python

View File

@@ -1,4 +1,6 @@
@lancedb/lancedb / [Exports](modules.md)
**@lancedb/lancedb** • [**Docs**](globals.md)
***
# LanceDB JavaScript SDK
@@ -45,29 +47,20 @@ npm run test
### Running lint / format
LanceDb uses eslint for linting. VSCode does not need any plugins to use eslint. However, it
may need some additional configuration. Make sure that eslint.experimental.useFlatConfig is
set to true. Also, if your vscode root folder is the repo root then you will need to set
the eslint.workingDirectories to ["nodejs"]. To manually lint your code you can run:
LanceDb uses [biome](https://biomejs.dev/) for linting and formatting. if you are using VSCode you will need to install the official [Biome](https://marketplace.visualstudio.com/items?itemName=biomejs.biome) extension.
To manually lint your code you can run:
```sh
npm run lint
```
LanceDb uses prettier for formatting. If you are using VSCode you will need to install the
"Prettier - Code formatter" extension. You should then configure it to be the default formatter
for typescript and you should enable format on save. To manually check your code's format you
can run:
to automatically fix all fixable issues:
```sh
npm run chkformat
npm run lint-fix
```
If you need to manually format your code you can run:
```sh
npx prettier --write .
```
If you do not have your workspace root set to the `nodejs` directory, unfortunately the extension will not work. You can still run the linting and formatting commands manually.
### Generating docs

View File

@@ -1,6 +1,10 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Connection
[**@lancedb/lancedb**](../README.md) **Docs**
# Class: Connection
***
[@lancedb/lancedb](../globals.md) / Connection
# Class: `abstract` Connection
A LanceDB Connection that allows you to open tables and create new ones.
@@ -19,62 +23,21 @@ be closed when they are garbage collected.
Any created tables are independent and will continue to work even if
the underlying connection has been closed.
## Table of contents
### Constructors
- [constructor](Connection.md#constructor)
### Properties
- [inner](Connection.md#inner)
### Methods
- [close](Connection.md#close)
- [createEmptyTable](Connection.md#createemptytable)
- [createTable](Connection.md#createtable)
- [display](Connection.md#display)
- [dropTable](Connection.md#droptable)
- [isOpen](Connection.md#isopen)
- [openTable](Connection.md#opentable)
- [tableNames](Connection.md#tablenames)
## Constructors
### constructor
### new Connection()
**new Connection**(`inner`): [`Connection`](Connection.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Connection` |
> **new Connection**(): [`Connection`](Connection.md)
#### Returns
[`Connection`](Connection.md)
#### Defined in
[connection.ts:72](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L72)
## Properties
### inner
`Readonly` **inner**: `Connection`
#### Defined in
[connection.ts:70](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L70)
## Methods
### close
### close()
**close**(): `void`
> `abstract` **close**(): `void`
Close the connection, releasing any underlying resources.
@@ -86,63 +49,78 @@ Any attempt to use the connection after it is closed will result in an error.
`void`
#### Defined in
***
[connection.ts:88](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L88)
### createEmptyTable()
___
### createEmptyTable
**createEmptyTable**(`name`, `schema`, `options?`): `Promise`\<[`Table`](Table.md)\>
> `abstract` **createEmptyTable**(`name`, `schema`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
Creates a new empty Table
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `schema` | `Schema`\<`any`\> | The schema of the table |
| `options?` | `Partial`\<[`CreateTableOptions`](../interfaces/CreateTableOptions.md)\> | - |
**name**: `string`
The name of the table.
**schema**: `SchemaLike`
The schema of the table
**options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
#### Returns
`Promise`\<[`Table`](Table.md)\>
`Promise`&lt;[`Table`](Table.md)&gt;
#### Defined in
***
[connection.ts:151](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L151)
### createTable()
___
#### createTable(options)
### createTable
**createTable**(`name`, `data`, `options?`): `Promise`\<[`Table`](Table.md)\>
> `abstract` **createTable**(`options`): `Promise`&lt;[`Table`](Table.md)&gt;
Creates a new Table and initialize it with new data.
#### Parameters
##### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `options?` | `Partial`\<[`CreateTableOptions`](../interfaces/CreateTableOptions.md)\> | - |
**options**: `object` & `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
#### Returns
The options object.
`Promise`\<[`Table`](Table.md)\>
##### Returns
#### Defined in
`Promise`&lt;[`Table`](Table.md)&gt;
[connection.ts:123](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L123)
#### createTable(name, data, options)
___
> `abstract` **createTable**(`name`, `data`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
### display
Creates a new Table and initialize it with new data.
**display**(): `string`
##### Parameters
**name**: `string`
The name of the table.
**data**: `TableLike` \| `Record`&lt;`string`, `unknown`&gt;[]
Non-empty Array of Records
to be inserted into the table
**options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
##### Returns
`Promise`&lt;[`Table`](Table.md)&gt;
***
### display()
> `abstract` **display**(): `string`
Return a brief description of the connection
@@ -150,37 +128,29 @@ Return a brief description of the connection
`string`
#### Defined in
***
[connection.ts:93](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L93)
### dropTable()
___
### dropTable
**dropTable**(`name`): `Promise`\<`void`\>
> `abstract` **dropTable**(`name`): `Promise`&lt;`void`&gt;
Drop an existing table.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table to drop. |
**name**: `string`
The name of the table to drop.
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[connection.ts:173](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L173)
### isOpen()
___
### isOpen
**isOpen**(): `boolean`
> `abstract` **isOpen**(): `boolean`
Return true if the connection has not been closed
@@ -188,37 +158,31 @@ Return true if the connection has not been closed
`boolean`
#### Defined in
***
[connection.ts:77](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L77)
### openTable()
___
### openTable
**openTable**(`name`): `Promise`\<[`Table`](Table.md)\>
> `abstract` **openTable**(`name`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
Open a table in the database.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table |
**name**: `string`
The name of the table
**options?**: `Partial`&lt;`OpenTableOptions`&gt;
#### Returns
`Promise`\<[`Table`](Table.md)\>
`Promise`&lt;[`Table`](Table.md)&gt;
#### Defined in
***
[connection.ts:112](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L112)
### tableNames()
___
### tableNames
**tableNames**(`options?`): `Promise`\<`string`[]\>
> `abstract` **tableNames**(`options`?): `Promise`&lt;`string`[]&gt;
List all the table names in this database.
@@ -226,14 +190,11 @@ Tables will be returned in lexicographical order.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `options?` | `Partial`\<[`TableNamesOptions`](../interfaces/TableNamesOptions.md)\> | options to control the paging / start point |
**options?**: `Partial`&lt;[`TableNamesOptions`](../interfaces/TableNamesOptions.md)&gt;
options to control the
paging / start point
#### Returns
`Promise`\<`string`[]\>
#### Defined in
[connection.ts:104](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L104)
`Promise`&lt;`string`[]&gt;

View File

@@ -1,57 +1,16 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Index
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / Index
# Class: Index
## Table of contents
### Constructors
- [constructor](Index.md#constructor)
### Properties
- [inner](Index.md#inner)
### Methods
- [btree](Index.md#btree)
- [ivfPq](Index.md#ivfpq)
## Constructors
### constructor
**new Index**(`inner`): [`Index`](Index.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Index` |
#### Returns
[`Index`](Index.md)
#### Defined in
[indices.ts:118](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L118)
## Properties
### inner
`Private` `Readonly` **inner**: `Index`
#### Defined in
[indices.ts:117](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L117)
## Methods
### btree
### btree()
**btree**(): [`Index`](Index.md)
> `static` **btree**(): [`Index`](Index.md)
Create a btree index
@@ -75,15 +34,11 @@ block size may be added in the future.
[`Index`](Index.md)
#### Defined in
***
[indices.ts:175](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L175)
### ivfPq()
___
### ivfPq
**ivfPq**(`options?`): [`Index`](Index.md)
> `static` **ivfPq**(`options`?): [`Index`](Index.md)
Create an IvfPq index
@@ -108,14 +63,8 @@ currently is also a memory intensive operation.
#### Parameters
| Name | Type |
| :------ | :------ |
| `options?` | `Partial`\<[`IvfPqOptions`](../interfaces/IvfPqOptions.md)\> |
**options?**: `Partial`&lt;[`IvfPqOptions`](../interfaces/IvfPqOptions.md)&gt;
#### Returns
[`Index`](Index.md)
#### Defined in
[indices.ts:144](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L144)

View File

@@ -1,46 +1,32 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / MakeArrowTableOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / MakeArrowTableOptions
# Class: MakeArrowTableOptions
Options to control the makeArrowTable call.
## Table of contents
### Constructors
- [constructor](MakeArrowTableOptions.md#constructor)
### Properties
- [dictionaryEncodeStrings](MakeArrowTableOptions.md#dictionaryencodestrings)
- [schema](MakeArrowTableOptions.md#schema)
- [vectorColumns](MakeArrowTableOptions.md#vectorcolumns)
## Constructors
### constructor
### new MakeArrowTableOptions()
**new MakeArrowTableOptions**(`values?`): [`MakeArrowTableOptions`](MakeArrowTableOptions.md)
> **new MakeArrowTableOptions**(`values`?): [`MakeArrowTableOptions`](MakeArrowTableOptions.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`MakeArrowTableOptions`](MakeArrowTableOptions.md)\> |
**values?**: `Partial`&lt;[`MakeArrowTableOptions`](MakeArrowTableOptions.md)&gt;
#### Returns
[`MakeArrowTableOptions`](MakeArrowTableOptions.md)
#### Defined in
[arrow.ts:100](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L100)
## Properties
### dictionaryEncodeStrings
**dictionaryEncodeStrings**: `boolean` = `false`
> **dictionaryEncodeStrings**: `boolean` = `false`
If true then string columns will be encoded with dictionary encoding
@@ -50,26 +36,26 @@ data type for individual columns.
If `schema` is provided then this property is ignored.
#### Defined in
***
[arrow.ts:98](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L98)
### embeddingFunction?
___
> `optional` **embeddingFunction**: [`EmbeddingFunctionConfig`](../namespaces/embedding/interfaces/EmbeddingFunctionConfig.md)
### schema
***
`Optional` **schema**: `Schema`\<`any`\>
### embeddings?
#### Defined in
> `optional` **embeddings**: [`EmbeddingFunction`](../namespaces/embedding/classes/EmbeddingFunction.md)&lt;`unknown`, `FunctionOptions`&gt;
[arrow.ts:67](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L67)
***
___
### schema?
> `optional` **schema**: `SchemaLike`
***
### vectorColumns
**vectorColumns**: `Record`\<`string`, [`VectorColumnOptions`](VectorColumnOptions.md)\>
#### Defined in
[arrow.ts:85](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L85)
> **vectorColumns**: `Record`&lt;`string`, [`VectorColumnOptions`](VectorColumnOptions.md)&gt;

View File

@@ -1,48 +1,26 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Query
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / Query
# Class: Query
A builder for LanceDB queries.
## Hierarchy
## Extends
- [`QueryBase`](QueryBase.md)\<`NativeQuery`, [`Query`](Query.md)\>
**`Query`**
## Table of contents
### Constructors
- [constructor](Query.md#constructor)
### Properties
- [inner](Query.md#inner)
### Methods
- [[asyncIterator]](Query.md#[asynciterator])
- [execute](Query.md#execute)
- [limit](Query.md#limit)
- [nativeExecute](Query.md#nativeexecute)
- [nearestTo](Query.md#nearestto)
- [select](Query.md#select)
- [toArray](Query.md#toarray)
- [toArrow](Query.md#toarrow)
- [where](Query.md#where)
- [`QueryBase`](QueryBase.md)&lt;`NativeQuery`&gt;
## Constructors
### constructor
### new Query()
**new Query**(`tbl`): [`Query`](Query.md)
> **new Query**(`tbl`): [`Query`](Query.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `tbl` | `Table` |
**tbl**: `Table`
#### Returns
@@ -50,57 +28,67 @@ A builder for LanceDB queries.
#### Overrides
[QueryBase](QueryBase.md).[constructor](QueryBase.md#constructor)
#### Defined in
[query.ts:329](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L329)
[`QueryBase`](QueryBase.md).[`constructor`](QueryBase.md#constructors)
## Properties
### inner
`Protected` **inner**: `Query`
> `protected` **inner**: `Query` \| `Promise`&lt;`Query`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[inner](QueryBase.md#inner)
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
[`QueryBase`](QueryBase.md).[`inner`](QueryBase.md#inner)
## Methods
### [asyncIterator]
### \[asyncIterator\]()
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Returns
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[[asyncIterator]](QueryBase.md#[asynciterator])
[`QueryBase`](QueryBase.md).[`[asyncIterator]`](QueryBase.md#%5Basynciterator%5D)
#### Defined in
***
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
### doCall()
___
> `protected` **doCall**(`fn`): `void`
### execute
#### Parameters
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
**fn**
#### Returns
`void`
#### Inherited from
[`QueryBase`](QueryBase.md).[`doCall`](QueryBase.md#docall)
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
**`See`**
#### See
- AsyncIterator
of
@@ -114,17 +102,76 @@ single query)
#### Inherited from
[QueryBase](QueryBase.md).[execute](QueryBase.md#execute)
[`QueryBase`](QueryBase.md).[`execute`](QueryBase.md#execute)
#### Defined in
***
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
### explainPlan()
___
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
### limit
Generates an explanation of the query execution plan.
**limit**(`limit`): [`Query`](Query.md)
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
#### Inherited from
[`QueryBase`](QueryBase.md).[`explainPlan`](QueryBase.md#explainplan)
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
#### Inherited from
[`QueryBase`](QueryBase.md).[`filter`](QueryBase.md#filter)
***
### limit()
> **limit**(`limit`): `this`
Set the maximum number of results to return.
@@ -133,45 +180,39 @@ called then every valid row from the table will be returned.
#### Parameters
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
**limit**: `number`
#### Returns
[`Query`](Query.md)
`this`
#### Inherited from
[QueryBase](QueryBase.md).[limit](QueryBase.md#limit)
[`QueryBase`](QueryBase.md).[`limit`](QueryBase.md#limit)
#### Defined in
***
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
### nativeExecute()
___
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
### nativeExecute
#### Parameters
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`RecordBatchIterator`\>
`Promise`&lt;`RecordBatchIterator`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[nativeExecute](QueryBase.md#nativeexecute)
[`QueryBase`](QueryBase.md).[`nativeExecute`](QueryBase.md#nativeexecute)
#### Defined in
***
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
### nearestTo()
___
### nearestTo
**nearestTo**(`vector`): [`VectorQuery`](VectorQuery.md)
> **nearestTo**(`vector`): [`VectorQuery`](VectorQuery.md)
Find the nearest vectors to the given query vector.
@@ -191,15 +232,13 @@ If there is more than one vector column you must use
#### Parameters
| Name | Type |
| :------ | :------ |
| `vector` | `unknown` |
**vector**: `IntoVector`
#### Returns
[`VectorQuery`](VectorQuery.md)
**`See`**
#### See
- [VectorQuery#column](VectorQuery.md#column) to specify which column you would like
to compare with.
@@ -223,15 +262,11 @@ Vector searches always have a `limit`. If `limit` has not been called then
a default `limit` of 10 will be used.
- [Query#limit](Query.md#limit)
#### Defined in
***
[query.ts:370](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L370)
### select()
___
### select
**select**(`columns`): [`Query`](Query.md)
> **select**(`columns`): `this`
Return only the specified columns.
@@ -255,15 +290,13 @@ input to this method would be:
#### Parameters
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
#### Returns
[`Query`](Query.md)
`this`
**`Example`**
#### Example
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -278,61 +311,57 @@ object insertion order is easy to get wrong and `Map` is more foolproof.
#### Inherited from
[QueryBase](QueryBase.md).[select](QueryBase.md#select)
[`QueryBase`](QueryBase.md).[`select`](QueryBase.md#select)
#### Defined in
***
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
### toArray()
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`unknown`[]\>
`Promise`&lt;`any`[]&gt;
#### Inherited from
[QueryBase](QueryBase.md).[toArray](QueryBase.md#toarray)
[`QueryBase`](QueryBase.md).[`toArray`](QueryBase.md#toarray)
#### Defined in
***
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
### toArrow()
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`Table`\<`any`\>\>
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
**`See`**
#### See
ArrowTable.
#### Inherited from
[QueryBase](QueryBase.md).[toArrow](QueryBase.md#toarrow)
[`QueryBase`](QueryBase.md).[`toArrow`](QueryBase.md#toarrow)
#### Defined in
***
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
### where()
___
### where
**where**(`predicate`): [`Query`](Query.md)
> **where**(`predicate`): `this`
A filter statement to be applied to this query.
@@ -340,15 +369,13 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
**predicate**: `string`
#### Returns
[`Query`](Query.md)
`this`
**`Example`**
#### Example
```ts
x > 10
@@ -361,8 +388,4 @@ on the filter column(s).
#### Inherited from
[QueryBase](QueryBase.md).[where](QueryBase.md#where)
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)
[`QueryBase`](QueryBase.md).[`where`](QueryBase.md#where)

View File

@@ -1,117 +1,91 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / QueryBase
[**@lancedb/lancedb**](../README.md) **Docs**
# Class: QueryBase\<NativeQueryType, QueryType\>
***
[@lancedb/lancedb](../globals.md) / QueryBase
# Class: QueryBase&lt;NativeQueryType&gt;
Common methods supported by all query types
## Type parameters
## Extended by
| Name | Type |
| :------ | :------ |
| `NativeQueryType` | extends `NativeQuery` \| `NativeVectorQuery` |
| `QueryType` | `QueryType` |
- [`Query`](Query.md)
- [`VectorQuery`](VectorQuery.md)
## Hierarchy
## Type Parameters
- **`QueryBase`**
↳ [`Query`](Query.md)
↳ [`VectorQuery`](VectorQuery.md)
**NativeQueryType** *extends* `NativeQuery` \| `NativeVectorQuery`
## Implements
- `AsyncIterable`\<`RecordBatch`\>
## Table of contents
### Constructors
- [constructor](QueryBase.md#constructor)
### Properties
- [inner](QueryBase.md#inner)
### Methods
- [[asyncIterator]](QueryBase.md#[asynciterator])
- [execute](QueryBase.md#execute)
- [limit](QueryBase.md#limit)
- [nativeExecute](QueryBase.md#nativeexecute)
- [select](QueryBase.md#select)
- [toArray](QueryBase.md#toarray)
- [toArrow](QueryBase.md#toarrow)
- [where](QueryBase.md#where)
- `AsyncIterable`&lt;`RecordBatch`&gt;
## Constructors
### constructor
### new QueryBase()
**new QueryBase**\<`NativeQueryType`, `QueryType`\>(`inner`): [`QueryBase`](QueryBase.md)\<`NativeQueryType`, `QueryType`\>
#### Type parameters
| Name | Type |
| :------ | :------ |
| `NativeQueryType` | extends `Query` \| `VectorQuery` |
| `QueryType` | `QueryType` |
> `protected` **new QueryBase**&lt;`NativeQueryType`&gt;(`inner`): [`QueryBase`](QueryBase.md)&lt;`NativeQueryType`&gt;
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `NativeQueryType` |
**inner**: `NativeQueryType` \| `Promise`&lt;`NativeQueryType`&gt;
#### Returns
[`QueryBase`](QueryBase.md)\<`NativeQueryType`, `QueryType`\>
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
[`QueryBase`](QueryBase.md)&lt;`NativeQueryType`&gt;
## Properties
### inner
`Protected` **inner**: `NativeQueryType`
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
> `protected` **inner**: `NativeQueryType` \| `Promise`&lt;`NativeQueryType`&gt;
## Methods
### [asyncIterator]
### \[asyncIterator\]()
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Returns
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Implementation of
AsyncIterable.[asyncIterator]
`AsyncIterable.[asyncIterator]`
#### Defined in
***
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
### doCall()
___
> `protected` **doCall**(`fn`): `void`
### execute
#### Parameters
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
**fn**
#### Returns
`void`
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
**`See`**
#### See
- AsyncIterator
of
@@ -123,15 +97,66 @@ This readahead is limited however and backpressure will be applied if this
stream is consumed slowly (this constrains the maximum memory used by a
single query)
#### Defined in
***
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
### explainPlan()
___
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
### limit
Generates an explanation of the query execution plan.
**limit**(`limit`): `QueryType`
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
***
### limit()
> **limit**(`limit`): `this`
Set the maximum number of results to return.
@@ -140,37 +165,31 @@ called then every valid row from the table will be returned.
#### Parameters
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
**limit**: `number`
#### Returns
`QueryType`
`this`
#### Defined in
***
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
### nativeExecute()
___
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
### nativeExecute
#### Parameters
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`RecordBatchIterator`\>
`Promise`&lt;`RecordBatchIterator`&gt;
#### Defined in
***
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
### select()
___
### select
**select**(`columns`): `QueryType`
> **select**(`columns`): `this`
Return only the specified columns.
@@ -194,15 +213,13 @@ input to this method would be:
#### Parameters
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
#### Returns
`QueryType`
`this`
**`Example`**
#### Example
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -215,51 +232,47 @@ uses `Object.entries` which should preserve the insertion order of the object.
object insertion order is easy to get wrong and `Map` is more foolproof.
```
#### Defined in
***
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
### toArray()
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`unknown`[]\>
`Promise`&lt;`any`[]&gt;
#### Defined in
***
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
### toArrow()
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`Table`\<`any`\>\>
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
**`See`**
#### See
ArrowTable.
#### Defined in
***
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
### where()
___
### where
**where**(`predicate`): `QueryType`
> **where**(`predicate`): `this`
A filter statement to be applied to this query.
@@ -267,15 +280,13 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
**predicate**: `string`
#### Returns
`QueryType`
`this`
**`Example`**
#### Example
```ts
x > 10
@@ -285,7 +296,3 @@ x > 5 OR y = 'test'
Filtering performance can often be improved by creating a scalar index
on the filter column(s).
```
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)

View File

@@ -1,80 +1,39 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / RecordBatchIterator
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / RecordBatchIterator
# Class: RecordBatchIterator
## Implements
- `AsyncIterator`\<`RecordBatch`\>
## Table of contents
### Constructors
- [constructor](RecordBatchIterator.md#constructor)
### Properties
- [inner](RecordBatchIterator.md#inner)
- [promisedInner](RecordBatchIterator.md#promisedinner)
### Methods
- [next](RecordBatchIterator.md#next)
- `AsyncIterator`&lt;`RecordBatch`&gt;
## Constructors
### constructor
### new RecordBatchIterator()
**new RecordBatchIterator**(`promise?`): [`RecordBatchIterator`](RecordBatchIterator.md)
> **new RecordBatchIterator**(`promise`?): [`RecordBatchIterator`](RecordBatchIterator.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `promise?` | `Promise`\<`RecordBatchIterator`\> |
**promise?**: `Promise`&lt;`RecordBatchIterator`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
#### Defined in
[query.ts:27](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L27)
## Properties
### inner
`Private` `Optional` **inner**: `RecordBatchIterator`
#### Defined in
[query.ts:25](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L25)
___
### promisedInner
`Private` `Optional` **promisedInner**: `Promise`\<`RecordBatchIterator`\>
#### Defined in
[query.ts:24](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L24)
## Methods
### next
### next()
**next**(): `Promise`\<`IteratorResult`\<`RecordBatch`\<`any`\>, `any`\>\>
> **next**(): `Promise`&lt;`IteratorResult`&lt;`RecordBatch`&lt;`any`&gt;, `any`&gt;&gt;
#### Returns
`Promise`\<`IteratorResult`\<`RecordBatch`\<`any`\>, `any`\>\>
`Promise`&lt;`IteratorResult`&lt;`RecordBatch`&lt;`any`&gt;, `any`&gt;&gt;
#### Implementation of
AsyncIterator.next
#### Defined in
[query.ts:33](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L33)
`AsyncIterator.next`

View File

@@ -1,6 +1,10 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Table
[**@lancedb/lancedb**](../README.md) **Docs**
# Class: Table
***
[@lancedb/lancedb](../globals.md) / Table
# Class: `abstract` Table
A Table is a collection of Records in a LanceDB Database.
@@ -13,196 +17,149 @@ further operations.
Closing a table is optional. It not closed, it will be closed when it is garbage
collected.
## Table of contents
### Constructors
- [constructor](Table.md#constructor)
### Properties
- [inner](Table.md#inner)
### Methods
- [add](Table.md#add)
- [addColumns](Table.md#addcolumns)
- [alterColumns](Table.md#altercolumns)
- [checkout](Table.md#checkout)
- [checkoutLatest](Table.md#checkoutlatest)
- [close](Table.md#close)
- [countRows](Table.md#countrows)
- [createIndex](Table.md#createindex)
- [delete](Table.md#delete)
- [display](Table.md#display)
- [dropColumns](Table.md#dropcolumns)
- [isOpen](Table.md#isopen)
- [listIndices](Table.md#listindices)
- [query](Table.md#query)
- [restore](Table.md#restore)
- [schema](Table.md#schema)
- [update](Table.md#update)
- [vectorSearch](Table.md#vectorsearch)
- [version](Table.md#version)
## Constructors
### constructor
### new Table()
**new Table**(`inner`): [`Table`](Table.md)
Construct a Table. Internal use only.
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Table` |
> **new Table**(): [`Table`](Table.md)
#### Returns
[`Table`](Table.md)
#### Defined in
## Accessors
[table.ts:69](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L69)
### name
## Properties
> `get` `abstract` **name**(): `string`
### inner
Returns the name of the table
`Private` `Readonly` **inner**: `Table`
#### Returns
#### Defined in
[table.ts:66](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L66)
`string`
## Methods
### add
### add()
**add**(`data`, `options?`): `Promise`\<`void`\>
> `abstract` **add**(`data`, `options`?): `Promise`&lt;`void`&gt;
Insert records into this Table.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | [`Data`](../modules.md#data) | Records to be inserted into the Table |
| `options?` | `Partial`\<[`AddDataOptions`](../interfaces/AddDataOptions.md)\> | - |
**data**: [`Data`](../type-aliases/Data.md)
Records to be inserted into the Table
**options?**: `Partial`&lt;[`AddDataOptions`](../interfaces/AddDataOptions.md)&gt;
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:105](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L105)
### addColumns()
___
### addColumns
**addColumns**(`newColumnTransforms`): `Promise`\<`void`\>
> `abstract` **addColumns**(`newColumnTransforms`): `Promise`&lt;`void`&gt;
Add new columns with defined values.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `newColumnTransforms` | [`AddColumnsSql`](../interfaces/AddColumnsSql.md)[] | pairs of column names and the SQL expression to use to calculate the value of the new column. These expressions will be evaluated for each row in the table, and can reference existing columns in the table. |
**newColumnTransforms**: [`AddColumnsSql`](../interfaces/AddColumnsSql.md)[]
pairs of column names and
the SQL expression to use to calculate the value of the new column. These
expressions will be evaluated for each row in the table, and can
reference existing columns in the table.
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:261](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L261)
### alterColumns()
___
### alterColumns
**alterColumns**(`columnAlterations`): `Promise`\<`void`\>
> `abstract` **alterColumns**(`columnAlterations`): `Promise`&lt;`void`&gt;
Alter the name or nullability of columns.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnAlterations` | [`ColumnAlteration`](../interfaces/ColumnAlteration.md)[] | One or more alterations to apply to columns. |
**columnAlterations**: [`ColumnAlteration`](../interfaces/ColumnAlteration.md)[]
One or more alterations to
apply to columns.
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:270](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L270)
### checkout()
___
> `abstract` **checkout**(`version`): `Promise`&lt;`void`&gt;
### checkout
Checks out a specific version of the table _This is an in-place operation._
**checkout**(`version`): `Promise`\<`void`\>
This allows viewing previous versions of the table. If you wish to
keep writing to the dataset starting from an old version, then use
the `restore` function.
Checks out a specific version of the Table
Any read operation on the table will now access the data at the checked out version.
As a consequence, calling this method will disable any read consistency interval
that was previously set.
This is a read-only operation that turns the table into a sort of "view"
or "detached head". Other table instances will not be affected. To make the change
permanent you can use the `[Self::restore]` method.
Any operation that modifies the table will fail while the table is in a checked
out state.
To return the table to a normal state use `[Self::checkout_latest]`
Calling this method will set the table into time-travel mode. If you
wish to return to standard mode, call `checkoutLatest`.
#### Parameters
| Name | Type |
| :------ | :------ |
| `version` | `number` |
**version**: `number`
The version to checkout
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
#### Example
[table.ts:317](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L317)
```typescript
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], type: "vector" },
]);
___
console.log(await table.version()); // 1
console.log(table.display());
await table.add([{ vector: [0.5, 0.2], type: "vector" }]);
await table.checkout(1);
console.log(await table.version()); // 2
```
### checkoutLatest
***
**checkoutLatest**(): `Promise`\<`void`\>
### checkoutLatest()
Ensures the table is pointing at the latest version
> `abstract` **checkoutLatest**(): `Promise`&lt;`void`&gt;
This can be used to manually update a table when the read_consistency_interval is None
It can also be used to undo a `[Self::checkout]` operation
Checkout the latest version of the table. _This is an in-place operation._
The table will be set back into standard mode, and will track the latest
version of the table.
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:327](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L327)
### close()
___
### close
**close**(): `void`
> `abstract` **close**(): `void`
Close the table, releasing any underlying resources.
@@ -214,37 +171,27 @@ Any attempt to use the table after it is closed will result in an error.
`void`
#### Defined in
***
[table.ts:85](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L85)
### countRows()
___
### countRows
**countRows**(`filter?`): `Promise`\<`number`\>
> `abstract` **countRows**(`filter`?): `Promise`&lt;`number`&gt;
Count the total number of rows in the dataset.
#### Parameters
| Name | Type |
| :------ | :------ |
| `filter?` | `string` |
**filter?**: `string`
#### Returns
`Promise`\<`number`\>
`Promise`&lt;`number`&gt;
#### Defined in
***
[table.ts:152](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L152)
### createIndex()
___
### createIndex
**createIndex**(`column`, `options?`): `Promise`\<`void`\>
> `abstract` **createIndex**(`column`, `options`?): `Promise`&lt;`void`&gt;
Create an index to speed up queries.
@@ -255,73 +202,66 @@ vector and non-vector searches)
#### Parameters
| Name | Type |
| :------ | :------ |
| `column` | `string` |
| `options?` | `Partial`\<[`IndexOptions`](../interfaces/IndexOptions.md)\> |
**column**: `string`
**options?**: `Partial`&lt;[`IndexOptions`](../interfaces/IndexOptions.md)&gt;
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
**`Example`**
#### Note
We currently don't support custom named indexes,
The index name will always be `${column}_idx`
#### Examples
```ts
// If the column has a vector (fixed size list) data type then
// an IvfPq vector index will be created.
const table = await conn.openTable("my_table");
await table.createIndex(["vector"]);
await table.createIndex("vector");
```
**`Example`**
```ts
// For advanced control over vector index creation you can specify
// the index type and options.
const table = await conn.openTable("my_table");
await table.createIndex(["vector"], I)
.ivf_pq({ num_partitions: 128, num_sub_vectors: 16 })
.build();
await table.createIndex("vector", {
config: lancedb.Index.ivfPq({
numPartitions: 128,
numSubVectors: 16,
}),
});
```
**`Example`**
```ts
// Or create a Scalar index
await table.createIndex("my_float_col").build();
await table.createIndex("my_float_col");
```
#### Defined in
***
[table.ts:184](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L184)
### delete()
___
### delete
**delete**(`predicate`): `Promise`\<`void`\>
> `abstract` **delete**(`predicate`): `Promise`&lt;`void`&gt;
Delete the rows that satisfy the predicate.
#### Parameters
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
**predicate**: `string`
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:157](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L157)
### display()
___
### display
**display**(): `string`
> `abstract` **display**(): `string`
Return a brief description of the table
@@ -329,15 +269,11 @@ Return a brief description of the table
`string`
#### Defined in
***
[table.ts:90](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L90)
### dropColumns()
___
### dropColumns
**dropColumns**(`columnNames`): `Promise`\<`void`\>
> `abstract` **dropColumns**(`columnNames`): `Promise`&lt;`void`&gt;
Drop one or more columns from the dataset
@@ -348,23 +284,41 @@ then call ``cleanup_files`` to remove the old files.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnNames` | `string`[] | The names of the columns to drop. These can be nested column references (e.g. "a.b.c") or top-level column names (e.g. "a"). |
• **columnNames**: `string`[]
The names of the columns to drop. These can
be nested column references (e.g. "a.b.c") or top-level column names
(e.g. "a").
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:285](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L285)
### indexStats()
___
> `abstract` **indexStats**(`name`): `Promise`&lt;`undefined` \| [`IndexStatistics`](../interfaces/IndexStatistics.md)&gt;
### isOpen
List all the stats of a specified index
▸ **isOpen**(): `boolean`
#### Parameters
• **name**: `string`
The name of the index.
#### Returns
`Promise`&lt;`undefined` \| [`IndexStatistics`](../interfaces/IndexStatistics.md)&gt;
The stats of the index. If the index does not exist, it will return undefined
***
### isOpen()
> `abstract` **isOpen**(): `boolean`
Return true if the table has not been closed
@@ -372,31 +326,79 @@ Return true if the table has not been closed
`boolean`
#### Defined in
***
[table.ts:74](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L74)
### listIndices()
___
> `abstract` **listIndices**(): `Promise`&lt;[`IndexConfig`](../interfaces/IndexConfig.md)[]&gt;
### listIndices
▸ **listIndices**(): `Promise`\<[`IndexConfig`](../interfaces/IndexConfig.md)[]\>
List all indices that have been created with Self::create_index
List all indices that have been created with [Table.createIndex](Table.md#createindex)
#### Returns
`Promise`\<[`IndexConfig`](../interfaces/IndexConfig.md)[]\>
`Promise`&lt;[`IndexConfig`](../interfaces/IndexConfig.md)[]&gt;
#### Defined in
***
[table.ts:350](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L350)
### mergeInsert()
___
> `abstract` **mergeInsert**(`on`): `MergeInsertBuilder`
### query
#### Parameters
**query**(): [`Query`](Query.md)
**on**: `string` \| `string`[]
#### Returns
`MergeInsertBuilder`
***
### optimize()
> `abstract` **optimize**(`options`?): `Promise`&lt;`OptimizeStats`&gt;
Optimize the on-disk data and indices for better performance.
Modeled after ``VACUUM`` in PostgreSQL.
Optimization covers three operations:
- Compaction: Merges small files into larger ones
- Prune: Removes old versions of the dataset
- Index: Optimizes the indices, adding new data to existing indices
Experimental API
----------------
The optimization process is undergoing active development and may change.
Our goal with these changes is to improve the performance of optimization and
reduce the complexity.
That being said, it is essential today to run optimize if you want the best
performance. It should be stable and safe to use in production, but it our
hope that the API may be simplified (or not even need to be called) in the
future.
The frequency an application shoudl call optimize is based on the frequency of
data modifications. If data is frequently added, deleted, or updated then
optimize should be run frequently. A good rule of thumb is to run optimize if
you have added or modified 100,000 or more records or run more than 20 data
modification operations.
#### Parameters
• **options?**: `Partial`&lt;`OptimizeOptions`&gt;
#### Returns
`Promise`&lt;`OptimizeStats`&gt;
***
### query()
> `abstract` **query**(): [`Query`](Query.md)
Create a [Query](Query.md) Builder.
@@ -406,8 +408,7 @@ returned by this method can be used to control the query using filtering,
vector similarity, sorting, and more.
Note: By default, all columns are returned. For best performance, you should
only fetch the columns you need. See [`Query::select_with_projection`] for
more details.
only fetch the columns you need.
When appropriate, various indices and statistics based pruning will be used to
accelerate the query.
@@ -418,21 +419,22 @@ accelerate the query.
A builder that can be used to parameterize the query
**`Example`**
#### Examples
```ts
// SQL-style filtering
//
// This query will return up to 1000 rows whose value in the `id` column
// is greater than 5. LanceDb supports a broad set of filtering functions.
for await (const batch of table.query()
.filter("id > 1").select(["id"]).limit(20)) {
console.log(batch);
// is greater than 5. LanceDb supports a broad set of filtering functions.
for await (const batch of table
.query()
.where("id > 1")
.select(["id"])
.limit(20)) {
console.log(batch);
}
```
**`Example`**
```ts
// Vector Similarity Search
//
@@ -440,18 +442,17 @@ for await (const batch of table.query()
// closest to the query vector [1.0, 2.0, 3.0]. If an index has been created
// on the "vector" column then this will perform an ANN search.
//
// The `refine_factor` and `nprobes` methods are used to control the recall /
// The `refineFactor` and `nprobes` methods are used to control the recall /
// latency tradeoff of the search.
for await (const batch of table.query()
.nearestTo([1, 2, 3])
.refineFactor(5).nprobe(10)
.limit(10)) {
console.log(batch);
for await (const batch of table
.query()
.where("id > 1")
.select(["id"])
.limit(20)) {
console.log(batch);
}
```
**`Example`**
```ts
// Scan the full dataset
//
@@ -461,15 +462,11 @@ for await (const batch of table.query()) {
}
```
#### Defined in
***
[table.ts:238](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L238)
### restore()
___
### restore
▸ **restore**(): `Promise`\<`void`\>
> `abstract` **restore**(): `Promise`&lt;`void`&gt;
Restore the table to the currently checked out version
@@ -484,33 +481,121 @@ out state and the read_consistency_interval, if any, will apply.
#### Returns
`Promise`\<`void`\>
`Promise`&lt;`void`&gt;
#### Defined in
***
[table.ts:343](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L343)
### schema()
___
### schema
▸ **schema**(): `Promise`\<`Schema`\<`any`\>\>
> `abstract` **schema**(): `Promise`&lt;`Schema`&lt;`any`&gt;&gt;
Get the schema of the table.
#### Returns
`Promise`\<`Schema`\<`any`\>\>
`Promise`&lt;`Schema`&lt;`any`&gt;&gt;
#### Defined in
***
[table.ts:95](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L95)
### search()
___
#### search(query)
### update
> `abstract` **search**(`query`): [`VectorQuery`](VectorQuery.md)
▸ **update**(`updates`, `options?`): `Promise`\<`void`\>
Create a search query to find the nearest neighbors
of the given query vector
##### Parameters
• **query**: `string`
the query. This will be converted to a vector using the table's provided embedding function
##### Returns
[`VectorQuery`](VectorQuery.md)
##### Note
If no embedding functions are defined in the table, this will error when collecting the results.
#### search(query)
> `abstract` **search**(`query`): [`VectorQuery`](VectorQuery.md)
Create a search query to find the nearest neighbors
of the given query vector
##### Parameters
• **query**: `IntoVector`
the query vector
##### Returns
[`VectorQuery`](VectorQuery.md)
***
### toArrow()
> `abstract` **toArrow**(): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
Return the table as an arrow table
#### Returns
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
***
### update()
#### update(opts)
> `abstract` **update**(`opts`): `Promise`&lt;`void`&gt;
Update existing records in the Table
##### Parameters
• **opts**: `object` & `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
##### Returns
`Promise`&lt;`void`&gt;
##### Example
```ts
table.update({where:"x = 2", values:{"vector": [10, 10]}})
```
#### update(opts)
> `abstract` **update**(`opts`): `Promise`&lt;`void`&gt;
Update existing records in the Table
##### Parameters
• **opts**: `object` & `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
##### Returns
`Promise`&lt;`void`&gt;
##### Example
```ts
table.update({where:"x = 2", valuesSql:{"x": "x + 1"}})
```
#### update(updates, options)
> `abstract` **update**(`updates`, `options`?): `Promise`&lt;`void`&gt;
Update existing records in the Table
@@ -527,26 +612,32 @@ you are updating many rows (with different ids) then you will get
better performance with a single [`merge_insert`] call instead of
repeatedly calilng this method.
#### Parameters
##### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `updates` | `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> | the columns to update Keys in the map should specify the name of the column to update. Values in the map provide the new value of the column. These can be SQL literal strings (e.g. "7" or "'foo'") or they can be expressions based on the row being updated (e.g. "my_col + 1") |
| `options?` | `Partial`\<[`UpdateOptions`](../interfaces/UpdateOptions.md)\> | additional options to control the update behavior |
• **updates**: `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
#### Returns
the
columns to update
`Promise`\<`void`\>
Keys in the map should specify the name of the column to update.
Values in the map provide the new value of the column. These can
be SQL literal strings (e.g. "7" or "'foo'") or they can be expressions
based on the row being updated (e.g. "my_col + 1")
#### Defined in
• **options?**: `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
[table.ts:137](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L137)
additional options to control
the update behavior
___
##### Returns
### vectorSearch
`Promise`&lt;`void`&gt;
▸ **vectorSearch**(`vector`): [`VectorQuery`](VectorQuery.md)
***
### vectorSearch()
> `abstract` **vectorSearch**(`vector`): [`VectorQuery`](VectorQuery.md)
Search the table with a given query vector.
@@ -556,39 +647,50 @@ by `query`.
#### Parameters
| Name | Type |
| :------ | :------ |
| `vector` | `unknown` |
• **vector**: `IntoVector`
#### Returns
[`VectorQuery`](VectorQuery.md)
**`See`**
#### See
[Query#nearestTo](Query.md#nearestto) for more details.
#### Defined in
***
[table.ts:249](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L249)
### version()
___
### version
▸ **version**(): `Promise`\<`number`\>
> `abstract` **version**(): `Promise`&lt;`number`&gt;
Retrieve the version of the table
LanceDb supports versioning. Every operation that modifies the table increases
version. As long as a version hasn't been deleted you can `[Self::checkout]` that
version to view the data at that point. In addition, you can `[Self::restore]` the
version to replace the current table with a previous version.
#### Returns
`Promise`&lt;`number`&gt;
***
### parseTableData()
> `static` **parseTableData**(`data`, `options`?, `streaming`?): `Promise`&lt;`object`&gt;
#### Parameters
• **data**: `TableLike` \| `Record`&lt;`string`, `unknown`&gt;[]
• **options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
• **streaming?**: `boolean` = `false`
#### Returns
`Promise`\<`number`\>
`Promise`&lt;`object`&gt;
#### Defined in
##### buf
[table.ts:297](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L297)
> **buf**: `Buffer`
##### mode
> **mode**: `string`

View File

@@ -1,45 +1,29 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / VectorColumnOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / VectorColumnOptions
# Class: VectorColumnOptions
## Table of contents
### Constructors
- [constructor](VectorColumnOptions.md#constructor)
### Properties
- [type](VectorColumnOptions.md#type)
## Constructors
### constructor
### new VectorColumnOptions()
**new VectorColumnOptions**(`values?`): [`VectorColumnOptions`](VectorColumnOptions.md)
> **new VectorColumnOptions**(`values`?): [`VectorColumnOptions`](VectorColumnOptions.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`VectorColumnOptions`](VectorColumnOptions.md)\> |
**values?**: `Partial`&lt;[`VectorColumnOptions`](VectorColumnOptions.md)&gt;
#### Returns
[`VectorColumnOptions`](VectorColumnOptions.md)
#### Defined in
[arrow.ts:49](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L49)
## Properties
### type
**type**: `Float`\<`Floats`\>
> **type**: `Float`&lt;`Floats`&gt;
Vector column type.
#### Defined in
[arrow.ts:47](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L47)

View File

@@ -1,4 +1,8 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / VectorQuery
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / VectorQuery
# Class: VectorQuery
@@ -6,50 +10,19 @@ A builder used to construct a vector search
This builder can be reused to execute the query many times.
## Hierarchy
## Extends
- [`QueryBase`](QueryBase.md)\<`NativeVectorQuery`, [`VectorQuery`](VectorQuery.md)\>
**`VectorQuery`**
## Table of contents
### Constructors
- [constructor](VectorQuery.md#constructor)
### Properties
- [inner](VectorQuery.md#inner)
### Methods
- [[asyncIterator]](VectorQuery.md#[asynciterator])
- [bypassVectorIndex](VectorQuery.md#bypassvectorindex)
- [column](VectorQuery.md#column)
- [distanceType](VectorQuery.md#distancetype)
- [execute](VectorQuery.md#execute)
- [limit](VectorQuery.md#limit)
- [nativeExecute](VectorQuery.md#nativeexecute)
- [nprobes](VectorQuery.md#nprobes)
- [postfilter](VectorQuery.md#postfilter)
- [refineFactor](VectorQuery.md#refinefactor)
- [select](VectorQuery.md#select)
- [toArray](VectorQuery.md#toarray)
- [toArrow](VectorQuery.md#toarrow)
- [where](VectorQuery.md#where)
- [`QueryBase`](QueryBase.md)&lt;`NativeVectorQuery`&gt;
## Constructors
### constructor
### new VectorQuery()
**new VectorQuery**(`inner`): [`VectorQuery`](VectorQuery.md)
> **new VectorQuery**(`inner`): [`VectorQuery`](VectorQuery.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `VectorQuery` |
**inner**: `VectorQuery` \| `Promise`&lt;`VectorQuery`&gt;
#### Returns
@@ -57,49 +30,37 @@ This builder can be reused to execute the query many times.
#### Overrides
[QueryBase](QueryBase.md).[constructor](QueryBase.md#constructor)
#### Defined in
[query.ts:189](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L189)
[`QueryBase`](QueryBase.md).[`constructor`](QueryBase.md#constructors)
## Properties
### inner
`Protected` **inner**: `VectorQuery`
> `protected` **inner**: `VectorQuery` \| `Promise`&lt;`VectorQuery`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[inner](QueryBase.md#inner)
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
[`QueryBase`](QueryBase.md).[`inner`](QueryBase.md#inner)
## Methods
### [asyncIterator]
### \[asyncIterator\]()
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Returns
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[[asyncIterator]](QueryBase.md#[asynciterator])
[`QueryBase`](QueryBase.md).[`[asyncIterator]`](QueryBase.md#%5Basynciterator%5D)
#### Defined in
***
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
### bypassVectorIndex()
___
### bypassVectorIndex
**bypassVectorIndex**(): [`VectorQuery`](VectorQuery.md)
> **bypassVectorIndex**(): [`VectorQuery`](VectorQuery.md)
If this is called then any vector index is skipped
@@ -113,15 +74,11 @@ calculate your recall to select an appropriate value for nprobes.
[`VectorQuery`](VectorQuery.md)
#### Defined in
***
[query.ts:321](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L321)
### column()
___
### column
**column**(`column`): [`VectorQuery`](VectorQuery.md)
> **column**(`column`): [`VectorQuery`](VectorQuery.md)
Set the vector column to query
@@ -130,30 +87,24 @@ the call to
#### Parameters
| Name | Type |
| :------ | :------ |
| `column` | `string` |
**column**: `string`
#### Returns
[`VectorQuery`](VectorQuery.md)
**`See`**
#### See
[Query#nearestTo](Query.md#nearestto)
This parameter must be specified if the table has more than one column
whose data type is a fixed-size-list of floats.
#### Defined in
***
[query.ts:229](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L229)
### distanceType()
___
### distanceType
**distanceType**(`distanceType`): [`VectorQuery`](VectorQuery.md)
> **distanceType**(`distanceType`): [`VectorQuery`](VectorQuery.md)
Set the distance metric to use
@@ -163,15 +114,13 @@ use. See
#### Parameters
| Name | Type |
| :------ | :------ |
| `distanceType` | `string` |
**distanceType**: `"l2"` \| `"cosine"` \| `"dot"`
#### Returns
[`VectorQuery`](VectorQuery.md)
**`See`**
#### See
[IvfPqOptions.distanceType](../interfaces/IvfPqOptions.md#distancetype) for more details on the different
distance metrics available.
@@ -182,23 +131,41 @@ invalid.
By default "l2" is used.
#### Defined in
***
[query.ts:248](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L248)
### doCall()
___
> `protected` **doCall**(`fn`): `void`
### execute
#### Parameters
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
**fn**
#### Returns
`void`
#### Inherited from
[`QueryBase`](QueryBase.md).[`doCall`](QueryBase.md#docall)
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
**`See`**
#### See
- AsyncIterator
of
@@ -212,17 +179,76 @@ single query)
#### Inherited from
[QueryBase](QueryBase.md).[execute](QueryBase.md#execute)
[`QueryBase`](QueryBase.md).[`execute`](QueryBase.md#execute)
#### Defined in
***
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
### explainPlan()
___
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
### limit
Generates an explanation of the query execution plan.
**limit**(`limit`): [`VectorQuery`](VectorQuery.md)
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
#### Inherited from
[`QueryBase`](QueryBase.md).[`explainPlan`](QueryBase.md#explainplan)
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
#### Inherited from
[`QueryBase`](QueryBase.md).[`filter`](QueryBase.md#filter)
***
### limit()
> **limit**(`limit`): `this`
Set the maximum number of results to return.
@@ -231,45 +257,39 @@ called then every valid row from the table will be returned.
#### Parameters
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
**limit**: `number`
#### Returns
[`VectorQuery`](VectorQuery.md)
`this`
#### Inherited from
[QueryBase](QueryBase.md).[limit](QueryBase.md#limit)
[`QueryBase`](QueryBase.md).[`limit`](QueryBase.md#limit)
#### Defined in
***
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
### nativeExecute()
___
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
### nativeExecute
#### Parameters
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`RecordBatchIterator`\>
`Promise`&lt;`RecordBatchIterator`&gt;
#### Inherited from
[QueryBase](QueryBase.md).[nativeExecute](QueryBase.md#nativeexecute)
[`QueryBase`](QueryBase.md).[`nativeExecute`](QueryBase.md#nativeexecute)
#### Defined in
***
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
### nprobes()
___
### nprobes
**nprobes**(`nprobes`): [`VectorQuery`](VectorQuery.md)
> **nprobes**(`nprobes`): [`VectorQuery`](VectorQuery.md)
Set the number of partitions to search (probe)
@@ -294,23 +314,17 @@ you the desired recall.
#### Parameters
| Name | Type |
| :------ | :------ |
| `nprobes` | `number` |
**nprobes**: `number`
#### Returns
[`VectorQuery`](VectorQuery.md)
#### Defined in
***
[query.ts:215](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L215)
### postfilter()
___
### postfilter
**postfilter**(): [`VectorQuery`](VectorQuery.md)
> **postfilter**(): [`VectorQuery`](VectorQuery.md)
If this is called then filtering will happen after the vector search instead of
before.
@@ -333,20 +347,16 @@ Post filtering happens during the "refine stage" (described in more detail in
[`VectorQuery`](VectorQuery.md)
**`See`**
#### See
[VectorQuery#refineFactor](VectorQuery.md#refinefactor)). This means that setting a higher refine
factor can often help restore some of the results lost by post filtering.
#### Defined in
***
[query.ts:307](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L307)
### refineFactor()
___
### refineFactor
**refineFactor**(`refineFactor`): [`VectorQuery`](VectorQuery.md)
> **refineFactor**(`refineFactor`): [`VectorQuery`](VectorQuery.md)
A multiplier to control how many additional rows are taken during the refine step
@@ -378,23 +388,17 @@ distance between the query vector and the actual uncompressed vector.
#### Parameters
| Name | Type |
| :------ | :------ |
| `refineFactor` | `number` |
**refineFactor**: `number`
#### Returns
[`VectorQuery`](VectorQuery.md)
#### Defined in
***
[query.ts:282](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L282)
### select()
___
### select
**select**(`columns`): [`VectorQuery`](VectorQuery.md)
> **select**(`columns`): `this`
Return only the specified columns.
@@ -418,15 +422,13 @@ input to this method would be:
#### Parameters
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
#### Returns
[`VectorQuery`](VectorQuery.md)
`this`
**`Example`**
#### Example
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -441,61 +443,57 @@ object insertion order is easy to get wrong and `Map` is more foolproof.
#### Inherited from
[QueryBase](QueryBase.md).[select](QueryBase.md#select)
[`QueryBase`](QueryBase.md).[`select`](QueryBase.md#select)
#### Defined in
***
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
### toArray()
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`unknown`[]\>
`Promise`&lt;`any`[]&gt;
#### Inherited from
[QueryBase](QueryBase.md).[toArray](QueryBase.md#toarray)
[`QueryBase`](QueryBase.md).[`toArray`](QueryBase.md#toarray)
#### Defined in
***
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
### toArrow()
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`\<`Table`\<`any`\>\>
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
**`See`**
#### See
ArrowTable.
#### Inherited from
[QueryBase](QueryBase.md).[toArrow](QueryBase.md#toarrow)
[`QueryBase`](QueryBase.md).[`toArrow`](QueryBase.md#toarrow)
#### Defined in
***
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
### where()
___
### where
**where**(`predicate`): [`VectorQuery`](VectorQuery.md)
> **where**(`predicate`): `this`
A filter statement to be applied to this query.
@@ -503,15 +501,13 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
**predicate**: `string`
#### Returns
[`VectorQuery`](VectorQuery.md)
`this`
**`Example`**
#### Example
```ts
x > 10
@@ -524,8 +520,4 @@ on the filter column(s).
#### Inherited from
[QueryBase](QueryBase.md).[where](QueryBase.md#where)
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)
[`QueryBase`](QueryBase.md).[`where`](QueryBase.md#where)

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@@ -1,111 +0,0 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / [embedding](../modules/embedding.md) / OpenAIEmbeddingFunction
# Class: OpenAIEmbeddingFunction
[embedding](../modules/embedding.md).OpenAIEmbeddingFunction
An embedding function that automatically creates vector representation for a given column.
## Implements
- [`EmbeddingFunction`](../interfaces/embedding.EmbeddingFunction.md)\<`string`\>
## Table of contents
### Constructors
- [constructor](embedding.OpenAIEmbeddingFunction.md#constructor)
### Properties
- [\_modelName](embedding.OpenAIEmbeddingFunction.md#_modelname)
- [\_openai](embedding.OpenAIEmbeddingFunction.md#_openai)
- [sourceColumn](embedding.OpenAIEmbeddingFunction.md#sourcecolumn)
### Methods
- [embed](embedding.OpenAIEmbeddingFunction.md#embed)
## Constructors
### constructor
**new OpenAIEmbeddingFunction**(`sourceColumn`, `openAIKey`, `modelName?`): [`OpenAIEmbeddingFunction`](embedding.OpenAIEmbeddingFunction.md)
#### Parameters
| Name | Type | Default value |
| :------ | :------ | :------ |
| `sourceColumn` | `string` | `undefined` |
| `openAIKey` | `string` | `undefined` |
| `modelName` | `string` | `"text-embedding-ada-002"` |
#### Returns
[`OpenAIEmbeddingFunction`](embedding.OpenAIEmbeddingFunction.md)
#### Defined in
[embedding/openai.ts:22](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L22)
## Properties
### \_modelName
`Private` `Readonly` **\_modelName**: `string`
#### Defined in
[embedding/openai.ts:20](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L20)
___
### \_openai
`Private` `Readonly` **\_openai**: `OpenAI`
#### Defined in
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L19)
___
### sourceColumn
**sourceColumn**: `string`
The name of the column that will be used as input for the Embedding Function.
#### Implementation of
[EmbeddingFunction](../interfaces/embedding.EmbeddingFunction.md).[sourceColumn](../interfaces/embedding.EmbeddingFunction.md#sourcecolumn)
#### Defined in
[embedding/openai.ts:61](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L61)
## Methods
### embed
**embed**(`data`): `Promise`\<`number`[][]\>
Creates a vector representation for the given values.
#### Parameters
| Name | Type |
| :------ | :------ |
| `data` | `string`[] |
#### Returns
`Promise`\<`number`[][]\>
#### Implementation of
[EmbeddingFunction](../interfaces/embedding.EmbeddingFunction.md).[embed](../interfaces/embedding.EmbeddingFunction.md#embed)
#### Defined in
[embedding/openai.ts:48](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L48)

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@@ -0,0 +1,27 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / WriteMode
# Enumeration: WriteMode
Write mode for writing a table.
## Enumeration Members
### Append
> **Append**: `"Append"`
***
### Create
> **Create**: `"Create"`
***
### Overwrite
> **Overwrite**: `"Overwrite"`

View File

@@ -1,43 +0,0 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / WriteMode
# Enumeration: WriteMode
Write mode for writing a table.
## Table of contents
### Enumeration Members
- [Append](WriteMode.md#append)
- [Create](WriteMode.md#create)
- [Overwrite](WriteMode.md#overwrite)
## Enumeration Members
### Append
**Append** = ``"Append"``
#### Defined in
native.d.ts:69
___
### Create
• **Create** = ``"Create"``
#### Defined in
native.d.ts:68
___
### Overwrite
• **Overwrite** = ``"Overwrite"``
#### Defined in
native.d.ts:70

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@@ -0,0 +1,82 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / connect
# Function: connect()
## connect(uri, opts)
> **connect**(`uri`, `opts`?): `Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
Connect to a LanceDB instance at the given URI.
Accepted formats:
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
### Parameters
**uri**: `string`
The uri of the database. If the database uri starts
with `db://` then it connects to a remote database.
**opts?**: `Partial`&lt;[`ConnectionOptions`](../interfaces/ConnectionOptions.md) \| `RemoteConnectionOptions`&gt;
### Returns
`Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
### See
[ConnectionOptions](../interfaces/ConnectionOptions.md) for more details on the URI format.
### Examples
```ts
const conn = await connect("/path/to/database");
```
```ts
const conn = await connect(
"s3://bucket/path/to/database",
{storageOptions: {timeout: "60s"}
});
```
## connect(opts)
> **connect**(`opts`): `Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
Connect to a LanceDB instance at the given URI.
Accepted formats:
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
### Parameters
**opts**: `Partial`&lt;[`ConnectionOptions`](../interfaces/ConnectionOptions.md) \| `RemoteConnectionOptions`&gt; & `object`
### Returns
`Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
### See
[ConnectionOptions](../interfaces/ConnectionOptions.md) for more details on the URI format.
### Example
```ts
const conn = await connect({
uri: "/path/to/database",
storageOptions: {timeout: "60s"}
});
```

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@@ -1,103 +1,12 @@
[@lancedb/lancedb](README.md) / Exports
[**@lancedb/lancedb**](../README.md) • **Docs**
# @lancedb/lancedb
***
## Table of contents
[@lancedb/lancedb](../globals.md) / makeArrowTable
### Namespaces
# Function: makeArrowTable()
- [embedding](modules/embedding.md)
### Enumerations
- [WriteMode](enums/WriteMode.md)
### Classes
- [Connection](classes/Connection.md)
- [Index](classes/Index.md)
- [MakeArrowTableOptions](classes/MakeArrowTableOptions.md)
- [Query](classes/Query.md)
- [QueryBase](classes/QueryBase.md)
- [RecordBatchIterator](classes/RecordBatchIterator.md)
- [Table](classes/Table.md)
- [VectorColumnOptions](classes/VectorColumnOptions.md)
- [VectorQuery](classes/VectorQuery.md)
### Interfaces
- [AddColumnsSql](interfaces/AddColumnsSql.md)
- [AddDataOptions](interfaces/AddDataOptions.md)
- [ColumnAlteration](interfaces/ColumnAlteration.md)
- [ConnectionOptions](interfaces/ConnectionOptions.md)
- [CreateTableOptions](interfaces/CreateTableOptions.md)
- [ExecutableQuery](interfaces/ExecutableQuery.md)
- [IndexConfig](interfaces/IndexConfig.md)
- [IndexOptions](interfaces/IndexOptions.md)
- [IvfPqOptions](interfaces/IvfPqOptions.md)
- [TableNamesOptions](interfaces/TableNamesOptions.md)
- [UpdateOptions](interfaces/UpdateOptions.md)
- [WriteOptions](interfaces/WriteOptions.md)
### Type Aliases
- [Data](modules.md#data)
### Functions
- [connect](modules.md#connect)
- [makeArrowTable](modules.md#makearrowtable)
## Type Aliases
### Data
Ƭ **Data**: `Record`\<`string`, `unknown`\>[] \| `ArrowTable`
Data type accepted by NodeJS SDK
#### Defined in
[arrow.ts:40](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L40)
## Functions
### connect
**connect**(`uri`, `opts?`): `Promise`\<[`Connection`](classes/Connection.md)\>
Connect to a LanceDB instance at the given URI.
Accpeted formats:
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `uri` | `string` | The uri of the database. If the database uri starts with `db://` then it connects to a remote database. |
| `opts?` | `Partial`\<[`ConnectionOptions`](interfaces/ConnectionOptions.md)\> | - |
#### Returns
`Promise`\<[`Connection`](classes/Connection.md)\>
**`See`**
[ConnectionOptions](interfaces/ConnectionOptions.md) for more details on the URI format.
#### Defined in
[index.ts:62](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/index.ts#L62)
___
### makeArrowTable
**makeArrowTable**(`data`, `options?`): `ArrowTable`
> **makeArrowTable**(`data`, `options`?, `metadata`?): `ArrowTable`
An enhanced version of the makeTable function from Apache Arrow
that supports nested fields and embeddings columns.
@@ -129,20 +38,20 @@ rules are as follows:
- Record<String, any> => Struct
- Array<any> => List
#### Parameters
## Parameters
| Name | Type |
| :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] |
| `options?` | `Partial`\<[`MakeArrowTableOptions`](classes/MakeArrowTableOptions.md)\> |
**data**: `Record`&lt;`string`, `unknown`&gt;[]
#### Returns
**options?**: `Partial`&lt;[`MakeArrowTableOptions`](../classes/MakeArrowTableOptions.md)&gt;
**metadata?**: `Map`&lt;`string`, `string`&gt;
## Returns
`ArrowTable`
**`Example`**
## Example
```ts
import { fromTableToBuffer, makeArrowTable } from "../arrow";
import { Field, FixedSizeList, Float16, Float32, Int32, Schema } from "apache-arrow";
@@ -203,7 +112,3 @@ const table = makeArrowTable([
}
assert.deepEqual(table.schema, schema)
```
#### Defined in
[arrow.ts:197](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L197)

51
docs/src/js/globals.md Normal file
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@@ -0,0 +1,51 @@
[**@lancedb/lancedb**](README.md) • **Docs**
***
# @lancedb/lancedb
## Namespaces
- [embedding](namespaces/embedding/README.md)
## Enumerations
- [WriteMode](enumerations/WriteMode.md)
## Classes
- [Connection](classes/Connection.md)
- [Index](classes/Index.md)
- [MakeArrowTableOptions](classes/MakeArrowTableOptions.md)
- [Query](classes/Query.md)
- [QueryBase](classes/QueryBase.md)
- [RecordBatchIterator](classes/RecordBatchIterator.md)
- [Table](classes/Table.md)
- [VectorColumnOptions](classes/VectorColumnOptions.md)
- [VectorQuery](classes/VectorQuery.md)
## Interfaces
- [AddColumnsSql](interfaces/AddColumnsSql.md)
- [AddDataOptions](interfaces/AddDataOptions.md)
- [ColumnAlteration](interfaces/ColumnAlteration.md)
- [ConnectionOptions](interfaces/ConnectionOptions.md)
- [CreateTableOptions](interfaces/CreateTableOptions.md)
- [ExecutableQuery](interfaces/ExecutableQuery.md)
- [IndexConfig](interfaces/IndexConfig.md)
- [IndexMetadata](interfaces/IndexMetadata.md)
- [IndexOptions](interfaces/IndexOptions.md)
- [IndexStatistics](interfaces/IndexStatistics.md)
- [IvfPqOptions](interfaces/IvfPqOptions.md)
- [TableNamesOptions](interfaces/TableNamesOptions.md)
- [UpdateOptions](interfaces/UpdateOptions.md)
- [WriteOptions](interfaces/WriteOptions.md)
## Type Aliases
- [Data](type-aliases/Data.md)
## Functions
- [connect](functions/connect.md)
- [makeArrowTable](functions/makeArrowTable.md)

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@@ -1,37 +1,26 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / AddColumnsSql
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / AddColumnsSql
# Interface: AddColumnsSql
A definition of a new column to add to a table.
## Table of contents
### Properties
- [name](AddColumnsSql.md#name)
- [valueSql](AddColumnsSql.md#valuesql)
## Properties
### name
**name**: `string`
> **name**: `string`
The name of the new column.
#### Defined in
native.d.ts:43
___
***
### valueSql
**valueSql**: `string`
> **valueSql**: `string`
The values to populate the new column with, as a SQL expression.
The expression can reference other columns in the table.
#### Defined in
native.d.ts:48

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@@ -1,25 +1,19 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / AddDataOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / AddDataOptions
# Interface: AddDataOptions
Options for adding data to a table.
## Table of contents
### Properties
- [mode](AddDataOptions.md#mode)
## Properties
### mode
**mode**: ``"append"`` \| ``"overwrite"``
> **mode**: `"append"` \| `"overwrite"`
If "append" (the default) then the new data will be added to the table
If "overwrite" then the new data will replace the existing data in the table.
#### Defined in
[table.ts:36](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L36)

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@@ -1,4 +1,8 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ColumnAlteration
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ColumnAlteration
# Interface: ColumnAlteration
@@ -7,50 +11,30 @@ A definition of a column alteration. The alteration changes the column at
and to have the data type `data_type`. At least one of `rename` or `nullable`
must be provided.
## Table of contents
### Properties
- [nullable](ColumnAlteration.md#nullable)
- [path](ColumnAlteration.md#path)
- [rename](ColumnAlteration.md#rename)
## Properties
### nullable
### nullable?
`Optional` **nullable**: `boolean`
> `optional` **nullable**: `boolean`
Set the new nullability. Note that a nullable column cannot be made non-nullable.
#### Defined in
native.d.ts:38
___
***
### path
**path**: `string`
> **path**: `string`
The path to the column to alter. This is a dot-separated path to the column.
If it is a top-level column then it is just the name of the column. If it is
a nested column then it is the path to the column, e.g. "a.b.c" for a column
`c` nested inside a column `b` nested inside a column `a`.
#### Defined in
***
native.d.ts:31
### rename?
___
### rename
`Optional` **rename**: `string`
> `optional` **rename**: `string`
The new name of the column. If not provided then the name will not be changed.
This must be distinct from the names of all other columns in the table.
#### Defined in
native.d.ts:36

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@@ -1,40 +1,16 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ConnectionOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ConnectionOptions
# Interface: ConnectionOptions
## Table of contents
### Properties
- [apiKey](ConnectionOptions.md#apikey)
- [hostOverride](ConnectionOptions.md#hostoverride)
- [readConsistencyInterval](ConnectionOptions.md#readconsistencyinterval)
## Properties
### apiKey
### readConsistencyInterval?
`Optional` **apiKey**: `string`
#### Defined in
native.d.ts:51
___
### hostOverride
`Optional` **hostOverride**: `string`
#### Defined in
native.d.ts:52
___
### readConsistencyInterval
`Optional` **readConsistencyInterval**: `number`
> `optional` **readConsistencyInterval**: `number`
(For LanceDB OSS only): The interval, in seconds, at which to check for
updates to the table from other processes. If None, then consistency is not
@@ -46,6 +22,12 @@ has passed since the last check, then the table will be checked for updates.
Note: this consistency only applies to read operations. Write operations are
always consistent.
#### Defined in
***
native.d.ts:64
### storageOptions?
> `optional` **storageOptions**: `Record`&lt;`string`, `string`&gt;
(For LanceDB OSS only): configuration for object storage.
The available options are described at https://lancedb.github.io/lancedb/guides/storage/

View File

@@ -1,32 +1,31 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / CreateTableOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / CreateTableOptions
# Interface: CreateTableOptions
## Table of contents
### Properties
- [existOk](CreateTableOptions.md#existok)
- [mode](CreateTableOptions.md#mode)
## Properties
### embeddingFunction?
> `optional` **embeddingFunction**: [`EmbeddingFunctionConfig`](../namespaces/embedding/interfaces/EmbeddingFunctionConfig.md)
***
### existOk
**existOk**: `boolean`
> **existOk**: `boolean`
If this is true and the table already exists and the mode is "create"
then no error will be raised.
#### Defined in
[connection.ts:35](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L35)
___
***
### mode
**mode**: ``"overwrite"`` \| ``"create"``
> **mode**: `"overwrite"` \| `"create"`
The mode to use when creating the table.
@@ -36,6 +35,31 @@ happen. Any provided data will be ignored.
If this is set to "overwrite" then any existing table will be replaced.
#### Defined in
***
[connection.ts:30](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L30)
### schema?
> `optional` **schema**: `SchemaLike`
***
### storageOptions?
> `optional` **storageOptions**: `Record`&lt;`string`, `string`&gt;
Configuration for object storage.
Options already set on the connection will be inherited by the table,
but can be overridden here.
The available options are described at https://lancedb.github.io/lancedb/guides/storage/
***
### useLegacyFormat?
> `optional` **useLegacyFormat**: `boolean`
If true then data files will be written with the legacy format
The default is true while the new format is in beta

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@@ -1,4 +1,8 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ExecutableQuery
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ExecutableQuery
# Interface: ExecutableQuery

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@@ -1,39 +1,36 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / IndexConfig
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexConfig
# Interface: IndexConfig
A description of an index currently configured on a column
## Table of contents
### Properties
- [columns](IndexConfig.md#columns)
- [indexType](IndexConfig.md#indextype)
## Properties
### columns
**columns**: `string`[]
> **columns**: `string`[]
The columns in the index
Currently this is always an array of size 1. In the future there may
Currently this is always an array of size 1. In the future there may
be more columns to represent composite indices.
#### Defined in
native.d.ts:16
___
***
### indexType
**indexType**: `string`
> **indexType**: `string`
The type of the index
#### Defined in
***
native.d.ts:9
### name
> **name**: `string`
The name of the index

View File

@@ -0,0 +1,19 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexMetadata
# Interface: IndexMetadata
## Properties
### indexType?
> `optional` **indexType**: `string`
***
### metricType?
> `optional` **metricType**: `string`

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@@ -1,19 +1,16 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / IndexOptions
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexOptions
# Interface: IndexOptions
## Table of contents
### Properties
- [config](IndexOptions.md#config)
- [replace](IndexOptions.md#replace)
## Properties
### config
### config?
`Optional` **config**: [`Index`](../classes/Index.md)
> `optional` **config**: [`Index`](../classes/Index.md)
Advanced index configuration
@@ -25,15 +22,11 @@ See the static methods on Index for details on the various index types.
If this is not supplied then column data type(s) and column statistics
will be used to determine the most useful kind of index to create.
#### Defined in
***
[indices.ts:192](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L192)
### replace?
___
### replace
`Optional` **replace**: `boolean`
> `optional` **replace**: `boolean`
Whether to replace the existing index
@@ -42,7 +35,3 @@ and the same name, then an error will be returned. This is true even if
that index is out of date.
The default is true
#### Defined in
[indices.ts:202](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L202)

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