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123 Commits

Author SHA1 Message Date
Lance Release
e291212ecf Bump version: 0.15.0-beta.0 → 0.15.0 2024-10-29 22:16:05 +00:00
Lance Release
edc6445f6f Bump version: 0.14.1-beta.1 → 0.15.0-beta.0 2024-10-29 22:16:05 +00:00
Will Jones
a324f4ad7a feat(node): enable logging and show full errors (#1775)
This exposes the `LANCEDB_LOG` environment variable in node, so that
users can now turn on logging.

In addition, fixes a bug where only the top-level error from Rust was
being shown. This PR makes sure the full error chain is included in the
error message. In the future, will improve this so the error chain is
set on the [cause](https://nodejs.org/api/errors.html#errorcause)
property of JS errors https://github.com/lancedb/lancedb/issues/1779

Fixes #1774
2024-10-29 15:13:34 -07:00
Weston Pace
55104c5bae feat: allow distance type (metric) to be specified during hybrid search (#1777) 2024-10-29 13:51:18 -07:00
Rithik Kumar
d71df4572e docs: revamp langchain integration page (#1773)
Before - 
<img width="1030" alt="Screenshot 2024-10-28 132932"
src="https://github.com/user-attachments/assets/63f78bfa-949e-473e-ab22-0c692577fa3e">


After - 
<img width="1037" alt="Screenshot 2024-10-28 132727"
src="https://github.com/user-attachments/assets/85a12f6c-74f0-49ba-9f1a-fe77ad125704">
2024-10-29 22:55:50 +05:30
Rithik Kumar
aa269199ad docs: fix archived examples links (#1751) 2024-10-29 22:55:27 +05:30
BubbleCal
32fdcf97db feat!: upgrade lance to 0.19.1 (#1762)
BREAKING CHANGE: default tokenizer no longer does stemming or stop-word
removal. Users should explicitly turn that option on in the future.

- upgrade lance to 0.19.1
- update the FTS docs
- update the FTS API

Upstream change notes:
https://github.com/lancedb/lance/releases/tag/v0.19.1

---------

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
Co-authored-by: Will Jones <willjones127@gmail.com>
2024-10-29 09:03:52 -07:00
Ryan Green
b9802a0d23 Revert "fix: error during deserialization of "INVERTED" index type"
This reverts commit 2ea5939f85.
2024-10-25 14:46:47 -02:30
Ryan Green
2ea5939f85 fix: error during deserialization of "INVERTED" index type 2024-10-25 14:40:14 -02:30
Lance Release
04e1f1ee4c Updating package-lock.json 2024-10-23 00:34:22 +00:00
Lance Release
bbc588e27d Bump version: 0.11.1-beta.0 → 0.11.1-beta.1 2024-10-23 00:34:01 +00:00
Lance Release
5517e102c3 Bump version: 0.14.1-beta.0 → 0.14.1-beta.1 2024-10-23 00:33:40 +00:00
Will Jones
82197c54e4 perf: eliminate iop in refresh (#1760)
Closes #1741

If we checkout a version, we need to make a `HEAD` request to get the
size of the manifest. The new `checkout_latest()` code path can skip
this IOP. This makes the refresh slightly faster.
2024-10-18 13:40:24 -07:00
Will Jones
48f46d4751 docs(node): update indexStats signature and regenerate docs (#1742)
`indexStats` still referenced UUID even though in
https://github.com/lancedb/lancedb/pull/1702 we changed it to take name
instead.
2024-10-18 10:53:28 -07:00
Lance Release
437316cbbc Updating package-lock.json 2024-10-17 18:59:18 +00:00
Lance Release
d406eab2c8 Bump version: 0.11.0 → 0.11.1-beta.0 2024-10-17 18:59:01 +00:00
Lance Release
1f41101897 Bump version: 0.14.0 → 0.14.1-beta.0 2024-10-17 18:58:45 +00:00
Will Jones
99e4db0d6a feat(rust): allow add_embedding on create_empty_table (#1754)
Fixes https://github.com/lancedb/lancedb/issues/1750
2024-10-17 11:58:15 -07:00
Will Jones
46486d4d22 fix: list_indices can handle fts indexes (#1753)
Fixes #1752
2024-10-16 10:39:40 -07:00
Weston Pace
f43cb8bba1 feat: upgrade lance to 0.18.3 (#1748) 2024-10-16 00:48:31 -07:00
James Wu
38eb05f297 fix(python): remove dependency on retry package (#1749)
## user story

fixes https://github.com/lancedb/lancedb/issues/1480

https://github.com/invl/retry has not had an update in 8 years, one if
its sub-dependencies via requirements.txt
(https://github.com/pytest-dev/py) is no longer maintained and has a
high severity vulnerability (CVE-2022-42969).

retry is only used for a single function in the python codebase for a
deprecated helper function `with_embeddings`, which was created for an
older tutorial (https://github.com/lancedb/lancedb/pull/12) [but is now
deprecated](https://lancedb.github.io/lancedb/embeddings/legacy/).

## changes

i backported a limited range of functionality of the `@retry()`
decorator directly into lancedb so that we no longer have a dependency
to the `retry` package.

## tests

```
/Users/james/src/lancedb/python $ ruff check .
All checks passed!
/Users/james/src/lancedb/python $ pytest python/tests/test_embeddings.py
python/tests/test_embeddings.py .......s....                                                                                                                        [100%]
================================================================ 11 passed, 1 skipped, 2 warnings in 7.08s ================================================================
```
2024-10-15 15:13:57 -07:00
Ryan Green
679a70231e feat: allow fast_search on python remote table (#1747)
Add `fast_search` parameter to query builder and remote table to support
skipping flat search in remote search
2024-10-14 14:39:54 -06:00
Dominik Weckmüller
e7b56b7b2a docs: add permanent link chain icon to headings without impacting SEO (#1746)
I noted that there are no permanent links in the docs. Adapted the
current best solution from
https://github.com/squidfunk/mkdocs-material/discussions/3535. It adds a
GitHub-like chain icon to the left of each heading (right on mobile) and
does not impact SEO unlike the default solution with pilcrow char `¶`
that might show up on google search results.

<img alt="image"
src="https://user-images.githubusercontent.com/182589/153004627-6df3f8e9-c747-4f43-bd62-a8dabaa96c3f.gif">
2024-10-14 11:58:23 -07:00
Olzhas Alexandrov
5ccd0edec2 docs: clarify infrastructure requirements for S3 Express One Zone (#1745) 2024-10-11 14:06:28 -06:00
Will Jones
9c74c435e0 ci: update package lock (#1740) 2024-10-09 15:14:08 -06:00
Lance Release
6de53ce393 Updating package-lock.json 2024-10-09 18:54:29 +00:00
Lance Release
9f42fbba96 Bump version: 0.11.0-beta.2 → 0.11.0 2024-10-09 18:54:09 +00:00
Lance Release
d892f7a622 Bump version: 0.11.0-beta.1 → 0.11.0-beta.2 2024-10-09 18:54:04 +00:00
Lance Release
515ab5f417 Bump version: 0.14.0-beta.1 → 0.14.0 2024-10-09 18:53:35 +00:00
Lance Release
8d0055fe6b Bump version: 0.14.0-beta.0 → 0.14.0-beta.1 2024-10-09 18:53:34 +00:00
Will Jones
5f9d8509b3 feat: upgrade Lance to v0.18.2 (#1737)
Includes changes from v0.18.1 and v0.18.2:

* [v0.18.1 change
log](https://github.com/lancedb/lance/releases/tag/v0.18.1)
* [v0.18.2 change
log](https://github.com/lancedb/lance/releases/tag/v0.18.2)

Closes #1656
Closes #1615
Closes #1661
2024-10-09 11:46:46 -06:00
Will Jones
f3b6a1f55b feat(node): bind remote SDK to rust implementation (#1730)
Closes [#2509](https://github.com/lancedb/sophon/issues/2509)

This is the Node.js analogue of #1700
2024-10-09 11:46:27 -06:00
Will Jones
aff25e3bf9 fix(node): add native packages to bump version (#1738)
We weren't bumping the version, so when users downloaded our package
from npm, they were getting the old binaries.
2024-10-08 23:03:53 -06:00
Will Jones
8509f73221 feat: better errors for remote SDK (#1722)
* Adds nicer errors to remote SDK, that expose useful properties like
`request_id` and `status_code`.
* Makes sure the Python tracebacks print nicely by mapping the `source`
field from a Rust error to the `__cause__` field.
2024-10-08 22:21:13 -06:00
Will Jones
607476788e feat(rust): list_indices in remote SDK (#1726)
Implements `list_indices`.

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-10-08 21:45:21 -06:00
Gagan Bhullar
4d458d5829 feat(python): drop support for dictionary in Table.add (#1725)
PR closes #1706
2024-10-08 20:41:08 -06:00
Will Jones
e61ba7f4e2 fix(rust): remote SDK bugs (#1723)
A few bugs uncovered by integration tests:

* We didn't prepend `/v1` to the Table endpoint URLs
* `/create_index` takes `metric_type` not `distance_type`. (This is also
an error in the OpenAPI docs.)
* `/create_index` expects the `metric_type` parameter to always be
lowercase.
* We were writing an IPC file message when we were supposed to send an
IPC stream message.
2024-10-04 08:43:07 -07:00
Prashant Dixit
408bc96a44 fix: broken notebook link fix (#1721) 2024-10-03 16:15:27 +05:30
Rithik Kumar
6ceaf8b06e docs: add langchainjs writing assistant (#1719) 2024-10-03 00:55:00 +05:30
Prashant Dixit
e2ca8daee1 docs: saleforce's sfr rag (#1717)
This PR adds Salesforce's newly released SFR RAG
2024-10-02 21:15:24 +05:30
Will Jones
f305f34d9b feat(python): bind python async remote client to rust client (#1700)
Closes [#1638](https://github.com/lancedb/lancedb/issues/1638)

This just binds the Python Async client to the Rust remote client.
2024-10-01 15:46:59 -07:00
Will Jones
a416925ca1 feat(rust): client configuration for remote client (#1696)
This PR ports over advanced client configuration present in the Python
`RestfulLanceDBClient` to the Rust one. The goal is to have feature
parity so we can replace the implementation.

* [x] Request timeout
* [x] Retries with backoff
* [x] Request id generation
* [x] User agent (with default tied to library version  )
* [x] Table existence cache
* [ ] Deferred: ~Request id customization (should this just pick up OTEL
trace ids?)~

Fixes #1684
2024-10-01 10:22:53 -07:00
Will Jones
2c4b07eb17 feat(python): merge_insert in async Python (#1707)
Fixes #1401
2024-10-01 10:06:52 -07:00
Will Jones
33b402c861 fix: list_indices returns correct index type (#1715)
Fixes https://github.com/lancedb/lancedb/issues/1711

Doesn't address this https://github.com/lancedb/lance/issues/2039

Instead we load the index statistics, which seems to contain the index
type. However, this involves more IO than previously. I'm not sure
whether we care that much. If we do, we can fix that upstream Lance
issue.
2024-10-01 09:16:18 -07:00
Rithik Kumar
7b2cdd2269 docs: revamp Voxel51 v1 (#1714)
Revamp Voxel51

![image](https://github.com/user-attachments/assets/7ac34457-74ec-4654-b1d1-556e3d7357f5)
2024-10-01 11:59:03 +05:30
Akash Saravanan
d6b5054778 feat(python): add support for trust_remote_code in hf embeddings (#1712)
Resovles #1709. Adds `trust_remote_code` as a parameter to the
`TransformersEmbeddingFunction` class with a default of False. Updated
relevant documentation with the same.
2024-10-01 01:06:28 +05:30
Lei Xu
f0e7f5f665 ci: change to use github runner (#1708)
Use github runner
2024-09-27 17:53:05 -07:00
Will Jones
f958f4d2e8 feat: remote index stats (#1702)
BREAKING CHANGE: the return value of `index_stats` method has changed
and all `index_stats` APIs now take index name instead of UUID. Also
several deprecated index statistics methods were removed.

* Removes deprecated methods for individual index statistics
* Aligns public `IndexStatistics` struct with API response from LanceDB
Cloud.
* Implements `index_stats` for remote Rust SDK and Python async API.
2024-09-27 12:10:00 -07:00
Will Jones
c1d9d6f70b feat(rust): remote rename table (#1703)
Adds rename to remote table. Pre-requisite for
https://github.com/lancedb/lancedb/pull/1701
2024-09-27 09:37:54 -07:00
Will Jones
1778219ea9 feat(rust): remote client query and create_index endpoints (#1663)
Support for `query` and `create_index`.

Closes [#2519](https://github.com/lancedb/sophon/issues/2519)
2024-09-27 09:00:22 -07:00
Rob Meng
ee6c18f207 feat: expose underlying dataset uri of the table (#1704) 2024-09-27 10:20:02 -04:00
rjrobben
e606a455df fix(EmbeddingFunction): modify safe_model_dump to explicitly exclude class fields with underscore (#1688)
Resolve issue #1681

---------

Co-authored-by: rjrobben <rjrobben123@gmail.com>
2024-09-25 11:53:49 -07:00
Gagan Bhullar
8f0eb34109 fix: hnsw default partitions (#1667)
PR fixes #1662

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-25 09:16:03 -07:00
Ayush Chaurasia
2f2721e242 feat(python): allow explicit hybrid search query pattern in SaaS (feat parity) (#1698)
-  fixes https://github.com/lancedb/lancedb/issues/1697.
- unifies vector column inference logic for remote and local table to
prevent future disparities.
- Updates docstring in RemoteTable to specify empty queries are not
supported
2024-09-25 21:04:00 +05:30
QianZhu
f00b21c98c fix: metric type for python/node search api (#1689) 2024-09-24 16:10:29 -07:00
Lance Release
962b3afd17 Updating package-lock.json 2024-09-24 16:51:37 +00:00
Lance Release
b72ac073ab Bump version: 0.11.0-beta.0 → 0.11.0-beta.1 2024-09-24 16:51:16 +00:00
Bert
3152ccd13c fix: re-add hostOverride arg to ConnectionOptions (#1694)
Fixes issue where hostOverride was no-longer passed through to
RemoteConnection
2024-09-24 13:29:26 -03:00
Bert
d5021356b4 feat: add fast_search to vectordb (#1693) 2024-09-24 13:28:54 -03:00
Will Jones
e82f63b40a fix(node): pass no const enum (#1690)
Apparently this is a no-no for libraries.
https://ncjamieson.com/dont-export-const-enums/

Fixes [#1664](https://github.com/lancedb/lancedb/issues/1664)
2024-09-24 07:41:42 -07:00
Ayush Chaurasia
f81ce68e41 fix(python): force deduce vector column name if running explicit hybrid query (#1692)
Right now when passing vector and query explicitly for hybrid search ,
vector_column_name is not deduced.
(https://lancedb.github.io/lancedb/hybrid_search/hybrid_search/#hybrid-search-in-lancedb
). Because vector and query can be both none when initialising the
QueryBuilder in this case. This PR forces deduction of query type if it
is set to "hybrid"
2024-09-24 19:02:56 +05:30
Will Jones
f5c25b6fff ci: run clippy on tests (#1659) 2024-09-23 07:33:47 -07:00
Ayush Chaurasia
86978e7588 feat!: enforce all rerankers always return relevance score & deprecate linear combination fixes (#1687)
- Enforce all rerankers always return _relevance_score. This was already
loosely done in tests before but based on user feedback its better to
always have _relevance_score present in all reranked results
- Deprecate LinearCombinationReranker in docs. And also fix a case where
it would not return _relevance_score if one result set was missing
2024-09-23 12:12:02 +05:30
Lei Xu
7c314d61cc chore: add error handling for openai embedding generation (#1680) 2024-09-23 12:10:56 +05:30
Lei Xu
7a8d2f37c4 feat(rust): add with_row_id to rust SDK (#1683) 2024-09-21 21:26:19 -07:00
Rithik Kumar
11072b9edc docs: phidata integration page (#1678)
Added new integration page for phidata :

![image](https://github.com/user-attachments/assets/8cd9b420-f249-4eac-ac13-ae53983822be)
2024-09-21 00:40:47 +05:30
Lei Xu
915d828cee feat!: set embeddings to Null if embedding function return invalid results (#1674) 2024-09-19 23:16:20 -07:00
Lance Release
d9a72adc58 Updating package-lock.json 2024-09-19 17:53:19 +00:00
Lance Release
d6cf2dafc6 Bump version: 0.10.0 → 0.11.0-beta.0 2024-09-19 17:53:00 +00:00
Lance Release
38f0031d0b Bump version: 0.13.0 → 0.14.0-beta.0 2024-09-19 17:52:38 +00:00
LuQQiu
e118c37228 ci: enable java auto release (#1602)
Enable bump java pom.xml versions
Enable auto java release when detect stable github release
2024-09-19 10:51:03 -07:00
LuQQiu
abeaae3d80 feat!: upgrade Lance to 0.18.0 (#1657)
BREAKING CHANGE: default file format changed to Lance v2.0.

Upgrade Lance to 0.18.0

Change notes: https://github.com/lancedb/lance/releases/tag/v0.18.0
2024-09-19 10:50:26 -07:00
Gagan Bhullar
b3c0227065 docs: hnsw documentation (#1640)
PR closes #1627

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-19 10:32:46 -07:00
Will Jones
521e665f57 feat(rust): remote client write data endpoint (#1645)
* Implements:
  * Add
  * Update
  * Delete
  * Merge-Insert

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-09-18 15:02:56 -07:00
Will Jones
ffb28dd4fc feat(rust): remote endpoints for schema, version, count_rows (#1644)
A handful of additional endpoints.
2024-09-16 08:19:25 -07:00
Lei Xu
32af962c0c feat: fix creating empty table and creating table by a list of RecordBatch for remote python sdk (#1650)
Closes #1637
2024-09-14 11:33:34 -07:00
Ayush Chaurasia
18484d0b6c fix: allow pass optional args in colbert reranker (#1649)
Fixes https://github.com/lancedb/lancedb/issues/1641
2024-09-14 11:18:09 -07:00
Lei Xu
c02ee3c80c chore: make remote client a context manager (#1648)
Allow `RemoteLanceDBClient` to be used as context manager
2024-09-13 22:08:48 -07:00
Rithik Kumar
dcd5f51036 docs: add understand embeddings v1 (#1643)
Before getting started with **managing embeddings**. Let's **understand
embeddings** (LanceDB way)

![Screenshot 2024-09-14
012144](https://github.com/user-attachments/assets/7c5435dc-5316-47e9-8d7d-9994ab13b93d)
2024-09-14 02:07:00 +05:30
Sayandip Dutta
9b8472850e fix: unterminated string literal on table update (#1573)
resolves #1429 
(python)

```python
-    return f"'{value}'"
+    return f'"{value}"'
```

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-13 12:32:59 -07:00
Sayandip Dutta
36d05ea641 fix: add appropriate QueryBuilder overloads to LanceTable.search (#1558)
- Add overloads to Table.search, to preserve the return information
of different types of QueryBuilder objects for LanceTable
- Fix fts_column type annotation by including making it `Optional`

resolves #1550

---------

Co-authored-by: sayandip-dutta <sayandip.dutta@nevaehtech.com>
Co-authored-by: Will Jones <willjones127@gmail.com>
2024-09-13 12:32:30 -07:00
LuQQiu
7ed86cadfb feat(node): let NODE API region default to us-east-1 (#1631)
Fixes #1622 
To sync with python API
2024-09-13 11:48:57 -07:00
Will Jones
1c123b58d8 feat: implement Remote connection for LanceDB Rust (#1639)
* Adding a simple test facility, which allows you to mock a single
endpoint at a time with a closure.
* Implementing all the database-level endpoints

Table-level APIs will be done in a follow up PR.

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-09-13 10:53:27 -07:00
BubbleCal
bf7d2d6fb0 docs: update FTS docs for JS SDK (#1634)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-09-13 05:48:29 -07:00
LuQQiu
c7732585bf fix: support pyarrow input types (#1628)
fixes #1625 
Support PyArrow.RecordBatch, pa.dataset.Dataset, pa.dataset.Scanner,
paRecordBatchReader
2024-09-12 10:59:18 -07:00
Prashant Dixit
b3bf6386c3 docs: rag section in guide (#1619)
This PR adds the RAG section in the Guides. It includes all the RAGs
with code snippet and some advanced techniques which improves RAG.
2024-09-11 21:13:55 +05:30
BubbleCal
4b79db72bf docs: improve the docs and API param name (#1629)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-09-11 10:18:29 +08:00
Lance Release
622a2922e2 Updating package-lock.json 2024-09-10 20:12:54 +00:00
Lance Release
c91221d710 Bump version: 0.10.0-beta.2 → 0.10.0 2024-09-10 20:12:41 +00:00
Lance Release
56da5ebd13 Bump version: 0.10.0-beta.1 → 0.10.0-beta.2 2024-09-10 20:12:40 +00:00
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
216 changed files with 12828 additions and 5822 deletions

View File

@@ -1,5 +1,5 @@
[tool.bumpversion]
current_version = "0.10.0-beta.0"
current_version = "0.11.1-beta.1"
parse = """(?x)
(?P<major>0|[1-9]\\d*)\\.
(?P<minor>0|[1-9]\\d*)\\.
@@ -24,34 +24,87 @@ commit = true
message = "Bump version: {current_version} → {new_version}"
commit_args = ""
# Java maven files
pre_commit_hooks = [
"""
NEW_VERSION="${BVHOOK_NEW_MAJOR}.${BVHOOK_NEW_MINOR}.${BVHOOK_NEW_PATCH}"
if [ ! -z "$BVHOOK_NEW_PRE_L" ] && [ ! -z "$BVHOOK_NEW_PRE_N" ]; then
NEW_VERSION="${NEW_VERSION}-${BVHOOK_NEW_PRE_L}.${BVHOOK_NEW_PRE_N}"
fi
echo "Constructed new version: $NEW_VERSION"
cd java && mvn versions:set -DnewVersion=$NEW_VERSION && mvn versions:commit
# Check for any modified but unstaged pom.xml files
MODIFIED_POMS=$(git ls-files -m | grep pom.xml)
if [ ! -z "$MODIFIED_POMS" ]; then
echo "The following pom.xml files were modified but not staged. Adding them now:"
echo "$MODIFIED_POMS" | while read -r file; do
git add "$file"
echo "Added: $file"
done
fi
""",
]
[tool.bumpversion.parts.pre_l]
values = ["beta", "final"]
optional_value = "final"
values = ["beta", "final"]
[[tool.bumpversion.files]]
filename = "node/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
search = "\"version\": \"{current_version}\","
[[tool.bumpversion.files]]
filename = "nodejs/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
search = "\"version\": \"{current_version}\","
# nodejs binary packages
[[tool.bumpversion.files]]
glob = "nodejs/npm/*/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
search = "\"version\": \"{current_version}\","
# vectodb node binary packages
[[tool.bumpversion.files]]
glob = "node/package.json"
replace = "\"@lancedb/vectordb-darwin-arm64\": \"{new_version}\""
search = "\"@lancedb/vectordb-darwin-arm64\": \"{current_version}\""
[[tool.bumpversion.files]]
glob = "node/package.json"
replace = "\"@lancedb/vectordb-darwin-x64\": \"{new_version}\""
search = "\"@lancedb/vectordb-darwin-x64\": \"{current_version}\""
[[tool.bumpversion.files]]
glob = "node/package.json"
replace = "\"@lancedb/vectordb-linux-arm64-gnu\": \"{new_version}\""
search = "\"@lancedb/vectordb-linux-arm64-gnu\": \"{current_version}\""
[[tool.bumpversion.files]]
glob = "node/package.json"
replace = "\"@lancedb/vectordb-linux-x64-gnu\": \"{new_version}\""
search = "\"@lancedb/vectordb-linux-x64-gnu\": \"{current_version}\""
[[tool.bumpversion.files]]
glob = "node/package.json"
replace = "\"@lancedb/vectordb-win32-x64-msvc\": \"{new_version}\""
search = "\"@lancedb/vectordb-win32-x64-msvc\": \"{current_version}\""
# Cargo files
# ------------
[[tool.bumpversion.files]]
filename = "rust/ffi/node/Cargo.toml"
search = "\nversion = \"{current_version}\""
replace = "\nversion = \"{new_version}\""
search = "\nversion = \"{current_version}\""
[[tool.bumpversion.files]]
filename = "rust/lancedb/Cargo.toml"
search = "\nversion = \"{current_version}\""
replace = "\nversion = \"{new_version}\""
search = "\nversion = \"{current_version}\""
[[tool.bumpversion.files]]
filename = "nodejs/Cargo.toml"
replace = "\nversion = \"{new_version}\""
search = "\nversion = \"{current_version}\""

View File

@@ -24,15 +24,19 @@ env:
jobs:
test-python:
name: Test doc python code
runs-on: "warp-ubuntu-latest-x64-4x"
runs-on: ubuntu-24.04
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: "warp-ubuntu-latest-x64-4x"
runs-on: ubuntu-24.04
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

114
.github/workflows/java-publish.yml vendored Normal file
View File

@@ -0,0 +1,114 @@
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: ${{ secrets.GPG_PASSPHRASE }}
- name: Install dependencies
run: |
sudo apt -y -qq update
sudo apt install -y protobuf-compiler libssl-dev pkg-config
- name: Download artifact
uses: actions/download-artifact@v4
- name: Copy native libs
run: |
mkdir -p ./core/target/classes/nativelib/darwin-aarch64 ./core/target/classes/nativelib/linux-aarch64
cp ../liblancedb_jni_darwin_aarch64.zip/liblancedb_jni.dylib ./core/target/classes/nativelib/darwin-aarch64/liblancedb_jni.dylib
cp ../liblancedb_jni_linux_aarch64.zip/liblancedb_jni.so ./core/target/classes/nativelib/linux-aarch64/liblancedb_jni.so
- name: Dry run
if: github.event_name == 'pull_request'
run: |
mvn --batch-mode -DskipTests package
- name: Set github
run: |
git config --global user.email "LanceDB Github Runner"
git config --global user.name "dev+gha@lancedb.com"
- name: Publish with Java 8
if: github.event_name == 'release'
run: |
echo "use-agent" >> ~/.gnupg/gpg.conf
echo "pinentry-mode loopback" >> ~/.gnupg/gpg.conf
export GPG_TTY=$(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

@@ -30,7 +30,7 @@ on:
default: true
type: boolean
other:
description: 'Make a Node/Rust release'
description: 'Make a Node/Rust/Java release'
required: true
default: true
type: boolean

View File

@@ -26,15 +26,14 @@ env:
jobs:
lint:
timeout-minutes: 30
runs-on: ubuntu-22.04
runs-on: ubuntu-24.04
defaults:
run:
shell: bash
working-directory: rust
env:
# Need up-to-date compilers for kernels
CC: gcc-12
CXX: g++-12
CC: clang-18
CXX: clang++-18
steps:
- uses: actions/checkout@v4
with:
@@ -50,21 +49,21 @@ jobs:
- name: Run format
run: cargo fmt --all -- --check
- name: Run clippy
run: cargo clippy --all --all-features -- -D warnings
run: cargo clippy --workspace --tests --all-features -- -D warnings
linux:
timeout-minutes: 30
# To build all features, we need more disk space than is available
# on the GitHub-provided runner. This is mostly due to the the
# on the free OSS github runner. This is mostly due to the the
# sentence-transformers feature.
runs-on: warp-ubuntu-latest-x64-4x
runs-on: ubuntu-2404-4x-x64
defaults:
run:
shell: bash
working-directory: rust
env:
# Need up-to-date compilers for kernels
CC: gcc-12
CXX: g++-12
CC: clang-18
CXX: clang++-18
steps:
- uses: actions/checkout@v4
with:
@@ -77,6 +76,12 @@ jobs:
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Make Swap
run: |
sudo fallocate -l 16G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
- name: Start S3 integration test environment
working-directory: .
run: docker compose up --detach --wait

View File

@@ -18,14 +18,16 @@ repository = "https://github.com/lancedb/lancedb"
description = "Serverless, low-latency vector database for AI applications"
keywords = ["lancedb", "lance", "database", "vector", "search"]
categories = ["database-implementations"]
rust-version = "1.80.0" # TODO: lower this once we upgrade Lance again.
[workspace.dependencies]
lance = { "version" = "=0.16.1", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.16.1" }
lance-linalg = { "version" = "=0.16.1" }
lance-testing = { "version" = "=0.16.1" }
lance-datafusion = { "version" = "=0.16.1" }
lance-encoding = { "version" = "=0.16.1" }
lance = { "version" = "=0.19.1", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.19.1" }
lance-linalg = { "version" = "=0.19.1" }
lance-table = { "version" = "=0.19.1" }
lance-testing = { "version" = "=0.19.1" }
lance-datafusion = { "version" = "=0.19.1" }
lance-encoding = { "version" = "=0.19.1" }
# Note that this one does not include pyarrow
arrow = { version = "52.2", optional = false }
arrow-array = "52.2"
@@ -37,16 +39,20 @@ arrow-arith = "52.2"
arrow-cast = "52.2"
async-trait = "0"
chrono = "0.4.35"
datafusion-physical-plan = "40.0"
datafusion-common = "41.0"
datafusion-physical-plan = "41.0"
env_logger = "0.10"
half = { "version" = "=2.4.1", default-features = false, features = [
"num-traits",
] }
futures = "0"
log = "0.4"
moka = { version = "0.11", features = ["future"] }
object_store = "0.10.2"
pin-project = "1.0.7"
snafu = "0.7.4"
url = "2"
num-traits = "0.2"
rand = "0.8"
regex = "1.10"
lazy_static = "1"

View File

@@ -82,4 +82,4 @@ result = table.search([100, 100]).limit(2).to_pandas()
## Blogs, Tutorials & Videos
* 📈 <a href="https://blog.lancedb.com/benchmarking-random-access-in-lance/">2000x better performance with Lance over Parquet</a>
* 🤖 <a href="https://github.com/lancedb/lancedb/blob/main/docs/src/notebooks/youtube_transcript_search.ipynb">Build a question and answer bot with LanceDB</a>
* 🤖 <a href="https://github.com/lancedb/vectordb-recipes/tree/main/examples/Youtube-Search-QA-Bot">Build a question and answer bot with LanceDB</a>

View File

@@ -26,6 +26,7 @@ theme:
- content.code.copy
- content.tabs.link
- content.action.edit
- content.tooltips
- toc.follow
- navigation.top
- navigation.tabs
@@ -33,8 +34,10 @@ theme:
- navigation.footer
- navigation.tracking
- navigation.instant
- content.footnote.tooltips
icon:
repo: fontawesome/brands/github
annotation: material/arrow-right-circle
custom_dir: overrides
plugins:
@@ -63,6 +66,11 @@ plugins:
markdown_extensions:
- admonition
- footnotes
- pymdownx.critic
- pymdownx.caret
- pymdownx.keys
- pymdownx.mark
- pymdownx.tilde
- pymdownx.details
- pymdownx.highlight:
anchor_linenums: true
@@ -76,7 +84,15 @@ 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
- markdown.extensions.toc:
baselevel: 1
permalink: ""
nav:
- Home:
@@ -84,19 +100,34 @@ 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 a vector index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Full-text search (native): fts.md
- Full-text search (tantivy-based): fts_tantivy.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
- Airbnb financial data example: notebooks/hybrid_search.ipynb
- RAG:
- Vanilla RAG: rag/vanilla_rag.md
- Multi-head RAG: rag/multi_head_rag.md
- Corrective RAG: rag/corrective_rag.md
- Agentic RAG: rag/agentic_rag.md
- Graph RAG: rag/graph_rag.md
- Self RAG: rag/self_rag.md
- Adaptive RAG: rag/adaptive_rag.md
- SFR RAG: rag/sfr_rag.md
- Advanced Techniques:
- HyDE: rag/advanced_techniques/hyde.md
- FLARE: rag/advanced_techniques/flare.md
- Reranking:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
@@ -106,6 +137,7 @@ nav:
- 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
@@ -117,9 +149,26 @@ nav:
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- 🧬 Managing embeddings:
- Overview: embeddings/index.md
- Understand Embeddings: embeddings/understanding_embeddings.md
- Get Started: 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
@@ -139,6 +188,7 @@ nav:
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- phidata: integrations/phidata.md
- 🎯 Examples:
- Overview: examples/index.md
- 🐍 Python:
@@ -150,10 +200,8 @@ nav:
- 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:
- 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
- 👾 JavaScript:
@@ -163,7 +211,10 @@ 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
- 🔍 Troubleshooting: troubleshooting.md
- ⚙️ API reference:
- 🐍 Python: python/python.md
- 👾 JavaScript (vectordb): javascript/modules.md
@@ -179,19 +230,34 @@ 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
- Vector Search: search.md
- Full-text search: fts.md
- Full-text search (native): fts.md
- Full-text search (tantivy-based): fts_tantivy.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
- Airbnb financial data example: notebooks/hybrid_search.ipynb
- RAG:
- Vanilla RAG: rag/vanilla_rag.md
- Multi-head RAG: rag/multi_head_rag.md
- Corrective RAG: rag/corrective_rag.md
- Agentic RAG: rag/agentic_rag.md
- Graph RAG: rag/graph_rag.md
- Self RAG: rag/self_rag.md
- Adaptive RAG: rag/adaptive_rag.md
- SFR RAG: rag/sfr_rag.md
- Advanced Techniques:
- HyDE: rag/advanced_techniques/hyde.md
- FLARE: rag/advanced_techniques/flare.md
- Reranking:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
@@ -201,6 +267,7 @@ nav:
- 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
@@ -212,9 +279,26 @@ nav:
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- Managing Embeddings:
- Overview: embeddings/index.md
- Understand Embeddings: embeddings/understanding_embeddings.md
- Get Started: 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
@@ -230,6 +314,7 @@ nav:
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- phidata: integrations/phidata.md
- Examples:
- examples/index.md
- 🐍 Python:
@@ -241,10 +326,8 @@ nav:
- 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:
- 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
- 👾 JavaScript:
@@ -254,6 +337,9 @@ nav:
- 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

View File

@@ -572,7 +572,7 @@ You can use the embedding API when working with embedding models. It automatical
--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/).
Learn about using the existing integrations and creating custom embedding functions in the [embedding API guide](./embeddings/index.md).
## What's next

View File

@@ -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()
```

View File

@@ -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).

View File

@@ -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})
)
```

View File

@@ -0,0 +1,82 @@
# 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)
```

View File

@@ -0,0 +1,51 @@
# 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 Hugging Face 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")`. Some Hugging Face models might require custom models defined on the HuggingFace Hub in their own modeling files. You may enable this by setting `trust_remote_code=True`. This option should only be set to True for repositories you trust and in which you have read the code, as it will execute code present on the Hub on your local machine.
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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# 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)
```

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# 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)
```

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# 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)
```

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# 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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# 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

@@ -1,800 +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 |
| `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)
!!! 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 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)
```
### 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")
```
### 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:
Now let's understand the above syntax:
```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)
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.**
### 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
```
- `get_registry()` : This function call returns an instance of a `EmbeddingFunctionRegistry` object. This registry manages the registration and retrieval of embedding functions.
Supported Embedding modelIDs are:
* `amazon.titan-embed-text-v1`
* `cohere.embed-english-v3`
* `cohere.embed-multilingual-v3`
- `.get("model_id")` : This method call on the registry object and retrieves the **embedding models functions** associated with the `"model_id"` (1) .
{ .annotate }
Supported parameters (to be passed in `create` method) are:
1. Hover over the names in table below to find out the `model_id` of different embedding functions.
| 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. |
- `.create(...params)` : This method call is on the object returned by the `get` method. It instantiates an embedding model function using the **specified parameters**.
Usage Example:
??? 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.
model = get_registry().get("bedrock-text").create()
## Text Embedding Functions 📝
These functions are registered by default to handle text embeddings.
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
- 🔄 **Embedding functions** have an inbuilt rate limit handler wrapper for source and query embedding function calls that retry with **exponential backoff**.
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("tmp_path")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
- 🌕 Each `EmbeddingFunction` implementation automatically takes `max_retries` as an argument which has the default value of 7.
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
🌟 **Available Text Embeddings**
# IBM watsonx.ai Embeddings
| **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) |
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:
[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"
- `ibm/slate-125m-english-rtrvr`
- `ibm/slate-30m-english-rtrvr`
- `sentence-transformers/all-minilm-l12-v2`
- `intfloat/multilingual-e5-large`
## Parameters
## Multi-modal Embedding Functions🖼
The following parameters can be passed to the `create` method:
Multi-modal embedding functions allow you to query your table using both images and text. 💬🖼️
| 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 |
🌐 **Available Multi-modal Embeddings**
## Usage Example
| 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) |
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)
```
## Multi-modal embedding functions
Multi-modal embedding functions allow you to query your table using both images and text.
### 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)
```
### 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).
### Jina Embeddings
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})
)
```
!!! 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).

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# Understand Embeddings
The term **dimension** is a synonym for the number of elements in a feature vector. Each feature can be thought of as a different axis in a geometric space.
High-dimensional data means there are many features(or attributes) in the data.
!!! example
1. An image is a data point and it might have thousands of dimensions because each pixel could be considered as a feature.
2. Text data, when represented by each word or character, can also lead to high dimensions, especially when considering all possible words in a language.
Embedding captures **meaning and relationships** within data by mapping high-dimensional data into a lower-dimensional space. It captures it by placing inputs that are more **similar in meaning** closer together in the **embedding space**.
## What are Vector Embeddings?
Vector embeddings is a way to convert complex data, like text, images, or audio into numerical coordinates (called vectors) that can be plotted in an n-dimensional space(embedding space).
The closer these data points are related in the real world, the closer their corresponding numerical coordinates (vectors) will be to each other in the embedding space. This proximity in the embedding space reflects their semantic similarities, allowing machines to intuitively understand and process the data in a way that mirrors human perception of relationships and meaning.
In a way, it captures the most important aspects of the data while ignoring the less important ones. As a result, tasks like searching for related content or identifying patterns become more efficient and accurate, as the embeddings make it possible to quantify how **closely related** different **data points** are and **reduce** the **computational complexity**.
??? question "Are vectors and embeddings the same thing?"
When we say “vectors” we mean - **list of numbers** that **represents the data**.
When we say “embeddings” we mean - **list of numbers** that **capture important details and relationships**.
Although the terms are often used interchangeably, “embeddings” highlight how the data is represented with meaning and structure, while “vector” simply refers to the numerical form of that representation.
## Embedding vs Indexing
We already saw that creating **embeddings** on data is a method of creating **vectors** for a **n-dimensional embedding space** that captures the meaning and relationships inherent in the data.
Once we have these **vectors**, indexing comes into play. Indexing is a method of organizing these vector embeddings, that allows us to quickly and efficiently locate and retrieve them from the entire dataset of vector embeddings.
## What types of data/objects can be embedded?
The following are common types of data that can be embedded:
1. **Text**: Text data includes sentences, paragraphs, documents, or any written content.
2. **Images**: Image data encompasses photographs, illustrations, or any visual content.
3. **Audio**: Audio data includes sounds, music, speech, or any auditory content.
4. **Video**: Video data consists of moving images and sound, which can convey complex information.
Large datasets of multi-modal data (text, audio, images, etc.) can be converted into embeddings with the appropriate model.
!!! tip "LanceDB vs Other traditional Vector DBs"
While many vector databases primarily focus on the storage and retrieval of vector embeddings, **LanceDB** uses **Lance file format** (operates on a disk-based architecture), which allows for the storage and management of not just embeddings but also **raw file data (bytes)**. This capability means that users can integrate various types of data, including images and text, alongside their vector embeddings in a unified system.
With the ability to store both vectors and associated file data, LanceDB enhances the querying process. Users can perform semantic searches that not only retrieve similar embeddings but also access related files and metadata, thus streamlining the workflow.
## How does embedding works?
As mentioned, after creating embedding, each data point is represented as a vector in a n-dimensional space (embedding space). The dimensionality of this space can vary depending on the complexity of the data and the specific embedding technique used.
Points that are close to each other in vector space are considered similar (or appear in similar contexts), and points that are far away are considered dissimilar. To quantify this closeness, we use distance as a metric which can be measured in the following way -
1. **Euclidean Distance (L2)**: It calculates the straight-line distance between two points (vectors) in a multidimensional space.
2. **Cosine Similarity**: It measures the cosine of the angle between two vectors, providing a normalized measure of similarity based on their direction.
3. **Dot product**: It is calculated as the sum of the products of their corresponding components. To measure relatedness it considers both the magnitude and direction of the vectors.
## How do you create and store vector embeddings for your data?
1. **Creating embeddings**: Choose an embedding model, it can be a pre-trained model (open-source or commercial) or you can train a custom embedding model for your scenario. Then feed your preprocessed data into the chosen model to obtain embeddings.
??? question "Popular choices for embedding models"
For text data, popular choices are OpenAIs text-embedding models, Google Gemini text-embedding models, Coheres Embed models, and SentenceTransformers, etc.
For image data, popular choices are CLIP (Contrastive LanguageImage Pretraining), Imagebind embeddings by meta (supports audio, video, and image), and Jina multi-modal embeddings, etc.
2. **Storing vector embeddings**: This effectively requires **specialized databases** that can handle the complexity of vector data, as traditional databases often struggle with this task. Vector databases are designed specifically for storing and querying vector embeddings. They optimize for efficient nearest-neighbor searches and provide built-in indexing mechanisms.
!!! tip "Why LanceDB"
LanceDB **automates** the entire process of creating and storing embeddings for your data. LanceDB allows you to define and use **embedding functions**, which can be **pre-trained models** or **custom models**.
This enables you to **generate** embeddings tailored to the nature of your data (e.g., text, images) and **store** both the **original data** and **embeddings** in a **structured schema** thus providing efficient querying capabilities for similarity searches.
Let's quickly [get started](./index.md) and learn how to manage embeddings in LanceDB.
## Bonus: As a developer, what you can create using embeddings?
As a developer, you can create a variety of innovative applications using vector embeddings. Check out the following -
<div class="grid cards" markdown>
- __Chatbots__
---
Develop chatbots that utilize embeddings to retrieve relevant context and generate coherent, contextually aware responses to user queries.
[:octicons-arrow-right-24: Check out examples](../examples/python_examples/chatbot.md)
- __Recommendation Systems__
---
Develop systems that recommend content (such as articles, movies, or products) based on the similarity of keywords and descriptions, enhancing user experience.
[:octicons-arrow-right-24: Check out examples](../examples/python_examples/recommendersystem.md)
- __Vector Search__
---
Build powerful applications that harness the full potential of semantic search, enabling them to retrieve relevant data quickly and effectively.
[:octicons-arrow-right-24: Check out examples](../examples/python_examples/vector_search.md)
- __RAG Applications__
---
Combine the strengths of large language models (LLMs) with retrieval-based approaches to create more useful applications.
[:octicons-arrow-right-24: Check out examples](../examples/python_examples/rag.md)
- __Many more examples__
---
Explore applied examples available as Colab notebooks or Python scripts to integrate into your applications.
[:octicons-arrow-right-24: More](../examples/examples_python.md)
</div>

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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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@@ -8,9 +8,15 @@ LanceDB provides language APIs, allowing you to embed a database in your languag
* 👾 [JavaScript](examples_js.md) examples
* 🦀 Rust examples (coming soon)
## Applications powered by LanceDB
## Python Applications powered by LanceDB
| 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.. |
## Nodejs Applications powered by LanceDB
| Project Name | Description |
| --- | --- |
| **Langchain Writing Assistant✍ **<br>[![Github](../assets/github.svg)](https://github.com/lancedb/vectordb-recipes/tree/main/applications/node/lanchain_writing_assistant) | - **📂 Data Source Integration**: Use your own data by specifying data source file, and the app instantly processes it to provide insights. <br>- **🧠 Intelligent Suggestions**: Powered by LangChain.js and LanceDB, it improves writing productivity and accuracy. <br>- **💡 Enhanced Writing Experience**: It delivers real-time contextual insights and factual suggestions while the user writes. |

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@@ -1,15 +1,15 @@
# 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📈🚀.
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, our coordination application enables 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📝.
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] |
| **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

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@@ -1,10 +1,10 @@
# **Build from Scratch with LanceDB 🛠️🚀**
Start building your GenAI applications from the ground up using LanceDB's efficient vector-based document retrieval capabilities! 📑
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! 💻
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** |
|:-------------------------------------------|:-------------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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**Chatbot Application with LanceDB 🤖**
**Chatbot applications with LanceDB 🤖**
====================================================================
Create an innovative chatbot application that utilizes LanceDB for efficient vector-based response generation! 🌐✨
Create innovative chatbot applications that utilizes LanceDB for efficient vector-based response generation! 🌐✨
**Introduction 👋✨**
@@ -10,12 +10,12 @@
| **Chatbot** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Databricks DBRX Website Bot ⚡️** | Unlock magical conversations with the Hogwarts chatbot, powered by Open-source RAG, DBRX, LanceDB, LLama-index, and Hugging Face Embeddings, delivering enchanting user experiences and spellbinding interactions ✨ | [![GitHub](../../assets/github.svg)][databricks_github] <br>[![Python](../../assets/python.svg)][databricks_python] |
| **CLI SDK Manual Chatbot Locally 💻** | CLI chatbot for SDK/hardware documents, powered by Local RAG, LLama3, Ollama, LanceDB, and Openhermes Embeddings, built with Phidata Assistant and Knowledge Base for instant technical support 🤖 | [![GitHub](../../assets/github.svg)][clisdk_github] <br>[![Python](../../assets/python.svg)][clisdk_python] |
| **Youtube Transcript Search QA Bot 📹** | Unlock the power of YouTube transcripts with a Q&A bot, leveraging natural language search and LanceDB for effortless data management and instant answers 💬 | [![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 🤖** | Revolutionize code documentation with a Q&A bot, powered by LangChain and LanceDB, allowing effortless querying of documentation using natural language, 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 🤖** | Experience the future of conversational AI with a context-aware chatbot, powered by Llama 2, LanceDB, and LangChain, enabling 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 📊** | Revolutionize data interaction with a chat application that harnesses LanceDB's hybrid search capabilities to converse with CSV and Excel files, enabling efficient and scalable data exploration and analysis 🚀 | [![GitHub](../../assets/github.svg)][csv_github] <br>[![Open In Collab](../../assets/colab.svg)][csv_colab] <br>[![Ghost](../../assets/ghost.svg)][csv_ghost] |
| **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
@@ -36,6 +36,6 @@
[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_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/Chat_with_csv_file
[csv_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_examples/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 Fundamentals 📊**
Evaluation is a comprehensive tool designed to measure the performance of text-based inputs, enabling data-driven optimization and improvement 📈.
**Text Evaluation 101 📚**
By leveraging cutting-edge technologies, this provides a robust framework for evaluating reference and candidate texts across various metrics 📊, ensuring high-quality text outputs that meet specific requirements and standards 📝.
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] |
| **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] |

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# **Multimodal Search with LanceDB 🤹‍♂️🔍**
Experience the future of search with LanceDB's multimodal capabilities. Combine text and image queries to find the most relevant results in your corpus ! 🔓💡
Using LanceDB's multimodal capabilities, combine text and image queries to find the most relevant results in your corpus ! 🔓💡
**Explore the Future of Search 🚀**
@@ -10,10 +10,10 @@ LanceDB supports multimodal search by indexing and querying vector representatio
| **Multimodal** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Multimodal CLIP: DiffusionDB 🌐💥** | Revolutionize search with Multimodal CLIP and DiffusionDB, combining text and image understanding for a new dimension of discovery! 🔓 | [![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 📸🔍** | Discover relevant documents and images with a single query, using LanceDB's multimodal search capabilities to bridge the gap between 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 🔍👀** | Dive into vision-centric exploration of images with Cambrian-1, powered by LanceDB's multimodal search to uncover new insights! 🔎 | [![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/) |
| **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/tree/main/examples/archived_examples/multimodal_search) <br>[![Open In Collab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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

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@@ -1,12 +1,11 @@
**RAG: Revolutionize Information Retrieval with LanceDB 🔓🧐**
**RAG (Retrieval-Augmented Generation) with LanceDB 🔓🧐**
====================================================================
Unlock the full potential of Retrieval-Augmented Generation (RAG) with LanceDB, a solution for efficient vector-based information retrieval 📊.
Build RAG (Retrieval-Augmented Generation) with LanceDB, a powerful solution for efficient vector-based information retrieval 📊.
**Experience the Future of Search 🔄**
RAG integrates large language models (LLMs) with scalable knowledge bases, enabling efficient information retrieval and answer generation 🤖. By applying RAG to industry-specific use cases, developers can optimize query processing 📊, reduce response latency ⏱️, and improve resource utilization 💻. LanceDB provides a robust framework for integrating LLMs with external knowledge sources, facilitating accurate and informative responses 📝.
🤖 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** |
|----------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------|
@@ -18,10 +17,10 @@ RAG integrates large language models (LLMs) with scalable knowledge bases, enabl
| **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 Forward-Looking Active REtrieval 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** ⚡🌐 | Revolutionize search with RAG Fusion, utilizing the **RRF algorithm** to rerank documents based on user queries, and leveraging LanceDB and OPENAI Embeddings for efficient information retrieval ⚡🌐 | [![Github](../../assets/github.svg)][fusion_github] <br>[![Open In Collab](../../assets/colab.svg)][fusion_colab] |
| **Agentic RAG** 🤖📚 | Unlock autonomous information retrieval with **Agentic RAG**, a framework of **intelligent agents** that collaborate to synthesize, summarize, and compare data across sources, enabling proactive and informed decision-making 🤖📚 | [![Github](../../assets/github.svg)][agentic_github] <br>[![Open In Collab](../../assets/colab.svg)][agentic_colab] |
| **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] |
@@ -71,12 +70,12 @@ RAG integrates large language models (LLMs) with scalable knowledge bases, enabl
[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
[query_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/QueryExpansion%26Reranker
[query_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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
[fusion_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/RAG_Fusion
[fusion_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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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@@ -0,0 +1,37 @@
**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/tree/main/examples/archived_examples/movie-recommendation-with-genres
[genre_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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/tree/main/examples/archived_examples/Food_recommendation
[food_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_examples/Food_recommendation/main.ipynb

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@@ -1,7 +1,7 @@
**Vector Search: Unlock Efficient Document Retrieval 🔓👀**
**Vector Search: Efficient Retrieval 🔓👀**
====================================================================
Unlock the power of vector search with LanceDB, a cutting-edge solution for efficient vector-based document retrieval 📊.
Vector search with LanceDB, is a solution for efficient and accurate similarity searches in large datasets 📊.
**Vector Search Capabilities in LanceDB🔝**
@@ -9,19 +9,19 @@ LanceDB implements vector search algorithms for efficient document retrieval and
| **Vector Search** | **Description** | **Links** |
|:-----------------|:---------------|:---------|
| **Inbuilt Hybrid Search 🔄** | Combine the power of traditional search algorithms with LanceDB's vector-based search for a robust and efficient search experience 📊 | [![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 💡** | 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 🔎** | Unlock contextual understanding with Named Entity Recognition (NER) methods: Dictionary-Based, Rule-Based, and Deep Learning-Based, to accurately identify and extract 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 ⚖️** | Unlock powerful semantic search capabilities by performing 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, leveraging 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 🔄** | 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] |
@@ -37,16 +37,16 @@ LanceDB implements vector search algorithms for efficient document retrieval and
[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
[audio_search_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/audio_search
[audio_search_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_examples/audio_search/main.ipynb
[audio_search_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/archived_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
[mls_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/multi-lingual-wiki-qa
[mls_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_examples/multi-lingual-wiki-qa/main.ipynb
[mls_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/archived_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
[fr_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/facial_recognition
[fr_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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
@@ -70,8 +70,8 @@ LanceDB implements vector search algorithms for efficient document retrieval and
[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_github]: https://github.com/lancedb/vectordb-recipes/tree/main/examples/archived_examples/zero-shot-image-classification
[zsic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/archived_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

@@ -1,21 +1,9 @@
# Full-text search
# Full-text search (Native FTS)
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 (Only for Tantivy-based FTS)
LanceDB provides support for full-text search via Lance, allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions.
!!! 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):
```sh
# Say you want to use tantivy==0.20.1
pip install tantivy==0.20.1
```
The Python SDK uses tantivy-based FTS by default, need to pass `use_tantivy=False` to use native FTS.
## Example
@@ -39,7 +27,7 @@ Consider that we have a LanceDB table named `my_table`, whose string column `tex
# passing `use_tantivy=False` to use lance FTS index
# `use_tantivy=True` by default
table.create_fts_index("text")
table.create_fts_index("text", use_tantivy=False)
table.search("puppy").limit(10).select(["text"]).to_list()
# [{'text': 'Frodo was a happy puppy', '_score': 0.6931471824645996}]
# ...
@@ -62,7 +50,7 @@ Consider that we have a LanceDB table named `my_table`, whose string column `tex
});
await tbl
.search("puppy")
.search("puppy", queryType="fts")
.select(["text"])
.limit(10)
.toArray();
@@ -93,51 +81,40 @@ Consider that we have a LanceDB table named `my_table`, whose string column `tex
```
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.
Passing `fts_columns="text"` if you want to specify the columns to 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.
## 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".
By default the text is tokenized by splitting on punctuation and whitespaces, and would filter out words that are with length greater than 40, and lowercase all words.
For now, only the Tantivy-based FTS index supports to specify the tokenizer, so it's only available in Python with `use_tantivy=True`.
Stemming is useful for improving search results by reducing words to their root form, e.g. "running" to "run". LanceDB supports stemming for multiple languages, you can specify the tokenizer name to enable stemming by the pattern `tokenizer_name="{language_code}_stem"`, e.g. `en_stem` for English.
=== "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)
For example, to enable stemming for English:
```python
table.create_fts_index("text", use_tantivy=True, tokenizer_name="en_stem")
```
the following [languages](https://docs.rs/tantivy/latest/tantivy/tokenizer/enum.Language.html) are currently supported.
## Index multiple columns
The tokenizer is customizable, you can specify how the tokenizer splits the text, and how it filters out words, etc.
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`:
=== "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.
For example, for language with accents, you can specify the tokenizer to use `ascii_folding` to remove accents, e.g. 'é' to 'e':
```python
table.create_fts_index("text",
use_tantivy=False,
language="French",
stem=True,
ascii_folding=True)
```
## Filtering
Currently the LanceDB full text search feature supports *post-filtering*, meaning filters are
applied on top of the full text search results. This can be invoked via the familiar
`where` syntax:
LanceDB full text search supports to filter the search results by a condition, both pre-filtering and post-filtering are supported.
This can be invoked via the familiar `where` syntax:
=== "Python"
@@ -169,98 +146,17 @@ applied on top of the full text search results. This can be invoked via the fami
.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,
```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)
.to_list())
```
!!! note
If you wish to specify an ordering field at query time, you must also
have specified it during indexing time. Otherwise at query time, an
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
`TypeError: argument 'value': 'float' object cannot be interpreted as an integer`.
!!! note
You can specify multiple fields for ordering at indexing time.
But at query time only one ordering field is supported.
## Phrase queries vs. terms queries
!!! warning "Warn"
Phrase queries are available for only Tantivy-based FTS
Lance-based FTS doesn't support queries using 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
or a **terms** search query like `old man 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).
!!! tip "Note"
The query parser will raise an exception on queries that are ambiguous. For example, in the query `they could have been dogs OR cats`, `OR` is capitalized so it's considered a keyword query operator. But it's ambiguous how the left part should be treated. So if you submit this search query as is, you'll get `Syntax Error: they could have been dogs OR cats`.
```py
# This raises a syntax error
table.search("they could have been dogs OR cats")
```
On the other hand, lowercasing `OR` to `or` will work, because there are no capitalized logical operators and
the query is treated as a phrase query.
```py
# This works!
table.search("they could have been dogs or cats")
```
It can be cumbersome to have to remember what will cause a syntax error depending on the type of
query you want to perform. To make this simpler, when you want to perform a phrase query, you can
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.
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.
In general, a query that's declared as a phrase query will be wrapped in double quotes during parsing, with nested
double quotes replaced by single quotes.
## 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
indexing a larger corpus.
To search for a phrase, the index must be created with `with_position=True`:
```python
# configure a 512MB heap size
heap = 1024 * 1024 * 512
table.create_fts_index(["text1", "text2"], writer_heap_size=heap, replace=True)
table.create_fts_index("text", use_tantivy=False, with_position=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.
2. We currently only support local filesystem paths for the FTS index.
This is a tantivy limitation. We've implemented an object store plugin
but there's no way in tantivy-py to specify to use it.
This will allow you to search for phrases, but it will also significantly increase the index size and indexing time.

162
docs/src/fts_tantivy.md Normal file
View File

@@ -0,0 +1,162 @@
# Full-text search (Tantivy-based FTS)
LanceDB also provides support for full-text search via [Tantivy](https://github.com/quickwit-oss/tantivy), allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions.
The tantivy-based FTS is only available in Python and does not support building indexes on object storage or incremental indexing. If you need these features, try native FTS [native FTS](fts.md).
## Installation
To use full-text search, install the dependency [`tantivy-py`](https://github.com/quickwit-oss/tantivy-py):
```sh
# Say you want to use tantivy==0.20.1
pip install tantivy==0.20.1
```
## Example
Consider that we have a LanceDB table named `my_table`, whose string column `content` we want to index and query via keyword search, the FTS index must be created before you can search via keywords.
```python
import lancedb
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
table = db.create_table(
"my_table",
data=[
{"id": 1, "vector": [3.1, 4.1], "title": "happy puppy", "content": "Frodo was a happy puppy", "meta": "foo"},
{"id": 2, "vector": [5.9, 26.5], "title": "playing kittens", "content": "There are several kittens playing around the puppy", "meta": "bar"},
],
)
# passing `use_tantivy=False` to use lance FTS index
# `use_tantivy=True` by default
table.create_fts_index("content", use_tantivy=True)
table.search("puppy").limit(10).select(["content"]).to_list()
# [{'text': 'Frodo was a happy puppy', '_score': 0.6931471824645996}]
# ...
```
It would search on all indexed columns by default, so it's useful when there are multiple indexed columns.
!!! 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.
## 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("content", use_tantivy=True, tokenizer_name="en_stem", replace=True)
```
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(["title", "content"], use_tantivy=True, replace=True)
```
Note that the search API call does not change - you can search over all indexed columns at once.
## Filtering
Currently the LanceDB full text search feature supports *post-filtering*, meaning filters are
applied on top of the full text search results (see [native FTS](fts.md) if you need pre-filtering). This can be invoked via the familiar
`where` syntax:
```python
table.search("puppy").limit(10).where("meta='foo'").to_list()
```
## Sorting
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,
```python
table.create_fts_index(["content"], use_tantivy=True, ordering_field_names=["id"], replace=True)
(table.search("puppy", ordering_field_name="id")
.limit(20)
.to_list())
```
!!! note
If you wish to specify an ordering field at query time, you must also
have specified it during indexing time. Otherwise at query time, an
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
`TypeError: argument 'value': 'float' object cannot be interpreted as an integer`.
!!! note
You can specify multiple fields for ordering at indexing time.
But at query time only one ordering field is supported.
## Phrase queries vs. terms queries
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).
!!! tip "Note"
The query parser will raise an exception on queries that are ambiguous. For example, in the query `they could have been dogs OR cats`, `OR` is capitalized so it's considered a keyword query operator. But it's ambiguous how the left part should be treated. So if you submit this search query as is, you'll get `Syntax Error: they could have been dogs OR cats`.
```py
# This raises a syntax error
table.search("they could have been dogs OR cats")
```
On the other hand, lowercasing `OR` to `or` will work, because there are no capitalized logical operators and
the query is treated as a phrase query.
```py
# This works!
table.search("they could have been dogs or cats")
```
It can be cumbersome to have to remember what will cause a syntax error depending on the type of
query you want to perform. To make this simpler, when you want to perform a phrase query, you can
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.
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.
In general, a query that's declared as a phrase query will be wrapped in double quotes during parsing, with nested
double quotes replaced by single quotes.
## Configurations
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
indexing a larger corpus.
```python
# configure a 512MB heap size
heap = 1024 * 1024 * 512
table.create_fts_index(["title", "content"], use_tantivy=True, writer_heap_size=heap, replace=True)
```
## Current limitations
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.
2. We currently only support local filesystem paths for the FTS index.
This is a tantivy limitation. We've implemented an object store plugin
but there's no way in tantivy-py to specify to use it.

View File

@@ -498,7 +498,7 @@ This can also be done with the ``AWS_ENDPOINT`` and ``AWS_DEFAULT_REGION`` envir
#### S3 Express
LanceDB supports [S3 Express One Zone](https://aws.amazon.com/s3/storage-classes/express-one-zone/) endpoints, but requires additional configuration. Also, S3 Express endpoints only support connecting from an EC2 instance within the same region.
LanceDB supports [S3 Express One Zone](https://aws.amazon.com/s3/storage-classes/express-one-zone/) endpoints, but requires additional infrastructure configuration for the compute service, such as EC2 or Lambda. Please refer to [Networking requirements for S3 Express One Zone](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-networking.html).
To configure LanceDB to use an S3 Express endpoint, you must set the storage option `s3_express`. The bucket name in your table URI should **include the suffix**.

View File

@@ -416,7 +416,6 @@ You can create an empty table for scenarios where you want to add data to the ta
=== "Python"
```python
An empty table can be initialized via a PyArrow schema.

View File

@@ -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.

View File

@@ -49,7 +49,8 @@ The following pages go deeper into the internal of LanceDB and how to use it.
* [Working with tables](guides/tables.md): Learn how to work with tables and their associated functions
* [Indexing](ann_indexes.md): Understand how to create indexes
* [Vector search](search.md): Learn how to perform vector similarity search
* [Full-text search](fts.md): Learn how to perform full-text search
* [Full-text search (native)](fts.md): Learn how to perform full-text search
* [Full-text search (tantivy-based)](fts_tantivy.md): Learn how to perform full-text search using Tantivy
* [Managing embeddings](embeddings/index.md): Managing embeddings and the embedding functions API in LanceDB
* [Ecosystem Integrations](integrations/index.md): Integrate LanceDB with other tools in the data ecosystem
* [Python API Reference](python/python.md): Python OSS and Cloud API references

View File

@@ -1,5 +1,10 @@
# Langchain
![Illustration](../assets/langchain.png)
**LangChain** is a framework designed for building applications with large language models (LLMs) by chaining together various components. It supports a range of functionalities including memory, agents, and chat models, enabling developers to create context-aware applications.
![Illustration](https://raw.githubusercontent.com/lancedb/assets/refs/heads/main/docs/assets/integration/langchain_rag.png)
LangChain streamlines these stages (in figure above) by providing pre-built components and tools for integration, memory management, and deployment, allowing developers to focus on application logic rather than underlying complexities.
Integration of **Langchain** with **LanceDB** enables applications to retrieve the most relevant data by comparing query vectors against stored vectors, facilitating effective information retrieval. It results in better and context aware replies and actions by the LLMs.
## 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. Checkout Complete example here - [LangChain demo](../notebooks/langchain_example.ipynb)
@@ -26,20 +31,28 @@ print(docs[0].page_content)
## Documentation
In the above example `LanceDB` vector store class object is created using `from_documents()` method which is a `classmethod` and returns the initialized class object.
You can also use `LanceDB.from_texts(texts: List[str],embedding: Embeddings)` class method.
The exhaustive list of parameters for `LanceDB` vector store are :
- `connection`: (Optional) `lancedb.db.LanceDBConnection` connection object to use. If not provided, a new connection will be created.
- `embedding`: Langchain embedding model.
- `vector_key`: (Optional) Column name to use for vector's in the table. Defaults to `'vector'`.
- `id_key`: (Optional) Column name to use for id's in the table. Defaults to `'id'`.
- `text_key`: (Optional) Column name to use for text in the table. Defaults to `'text'`.
- `table_name`: (Optional) Name of your table in the database. Defaults to `'vectorstore'`.
- `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`.
|Name|type|Purpose|default|
|:----|:----|:----|:----|
|`connection`| (Optional) `Any` |`lancedb.db.LanceDBConnection` connection object to use. If not provided, a new connection will be created.|`None`|
|`embedding`| (Optional) `Embeddings` | Langchain embedding model.|Provided by user.|
|`uri`| (Optional) `str` |It specifies the directory location of **LanceDB database** and establishes a connection that can be used to interact with the database. |`/tmp/lancedb`|
|`vector_key` |(Optional) `str`| Column name to use for vector's in the table.|`'vector'`|
|`id_key` |(Optional) `str`| Column name to use for id's in the table.|`'id'`|
|`text_key` |(Optional) `str` |Column name to use for text in the table.|`'text'`|
|`table_name` |(Optional) `str`| Name of your table in the database.|`'vectorstore'`|
|`api_key` |(Optional `str`) |API key to use for LanceDB cloud database.|`None`|
|`region` |(Optional) `str`| Region to use for LanceDB cloud database.|Only for LanceDB Cloud : `None`.|
|`mode` |(Optional) `str` |Mode to use for adding data to the table. Valid values are "append" and "overwrite".|`'overwrite'`|
|`table`| (Optional) `Any`|You can connect to an existing table of LanceDB, created outside of langchain, and utilize it.|`None`|
|`distance`|(Optional) `str`|The choice of distance metric used to calculate the similarity between vectors.|`'l2'`|
|`reranker` |(Optional) `Any`|The reranker to use for LanceDB.|`None`|
|`relevance_score_fn` |(Optional) `Callable[[float], float]` | Langchain relevance score function to be used.|`None`|
|`limit`|`int`|Set the maximum number of results to return.|`DEFAULT_K` (it is 4)|
```python
db_url = "db://lang_test" # url of db you created
@@ -51,19 +64,24 @@ vector_store = LanceDB(
api_key=api_key, #(dont include for local API)
region=region, #(dont include for local API)
embedding=embeddings,
table_name='langchain_test' #Optional
table_name='langchain_test' # Optional
)
```
### Methods
##### 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.
This method turn texts into embedding and add it to the database.
|Name|Purpose|defaults|
|:---|:---|:---|
|`texts`|`Iterable` of strings to add to the vectorstore.|Provided by user|
|`metadatas`|Optional `list[dict()]` of metadatas associated with the texts.|`None`|
|`ids`|Optional `list` of ids to associate with the texts.|`None`|
|`kwargs`| Other keyworded arguments provided by the user. |-|
It returns list of ids of the added texts.
```python
vector_store.add_texts(texts = ['test_123'], metadatas =[{'source' :'wiki'}])
@@ -78,14 +96,25 @@ 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)
```
##### create_index()
- `col_name`: `Optional[str] = None`
- `vector_col`: `Optional[str] = None`
- `num_partitions`: `Optional[int] = 256`
- `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.
------
##### create_index()
This method creates a scalar(for non-vector cols) or a vector index on a table.
|Name|type|Purpose|defaults|
|:---|:---|:---|:---|
|`vector_col`|`Optional[str]`| Provide if you want to create index on a vector column. |`None`|
|`col_name`|`Optional[str]`| Provide if you want to create index on a non-vector column. |`None`|
|`metric`|`Optional[str]` |Provide the metric to use for vector index. choice of metrics: 'L2', 'dot', 'cosine'. |`L2`|
|`num_partitions`|`Optional[int]`|Number of partitions to use for the index.|`256`|
|`num_sub_vectors`|`Optional[int]` |Number of sub-vectors to use for the index.|`96`|
|`index_cache_size`|`Optional[int]` |Size of the index cache.|`None`|
|`name`|`Optional[str]` |Name of the table to create index on.|`None`|
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
@@ -96,42 +125,63 @@ 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
##### similarity_search()
This method performs similarity search based on **text query**.
| Name | Type | Purpose | Default |
|---------|----------------------|---------|---------|
| `query` | `str` | A `str` representing the text query that you want to search for in the vector store. | N/A |
| `k` | `Optional[int]` | It specifies the number of documents to return. | `None` |
| `filter` | `Optional[Dict[str, str]]`| It is used to filter the search results by specific metadata criteria. | `None` |
| `fts` | `Optional[bool]` | It indicates whether to perform a full-text search (FTS). | `False` |
| `name` | `Optional[str]` | It is used for specifying the name of the table to query. If not provided, it uses the default table set during the initialization of the LanceDB instance. | `None` |
| `kwargs` | `Any` | Other keyworded arguments provided by the user. | N/A |
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.
##### similarity_search_by_vector()
The method returns documents that are most similar to the specified **embedding (query) vector**.
| Name | Type | Purpose | Default |
|-------------|---------------------------|---------|---------|
| `embedding` | `List[float]` | The embedding vector you want to use to search for similar documents in the vector store. | N/A |
| `k` | `Optional[int]` | It specifies the number of documents to return. | `None` |
| `filter` | `Optional[Dict[str, str]]`| It is used to filter the search results by specific metadata criteria. | `None` |
| `name` | `Optional[str]` | It is used for specifying the name of the table to query. If not provided, it uses the default table set during the initialization of the LanceDB instance. | `None` |
| `kwargs` | `Any` | Other keyworded arguments provided by the user. | N/A |
**It does not provide relevance scores.**
```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`.
##### similarity_search_with_score()
Returns documents most similar to the **query string** along with their relevance scores.
| Name | Type | Purpose | Default |
|----------|---------------------------|---------|---------|
| `query` | `str` |A `str` representing the text query you want to search for in the vector store. This query will be converted into an embedding using the specified embedding function. | N/A |
| `k` | `Optional[int]` | It specifies the number of documents to return. | `None` |
| `filter` | `Optional[Dict[str, str]]`| It is used to filter the search results by specific metadata criteria. This allows you to narrow down the search results based on certain metadata attributes associated with the documents. | `None` |
| `kwargs` | `Any` | Other keyworded arguments provided by the user. | N/A |
It 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)
@@ -139,15 +189,21 @@ 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
##### similarity_search_by_vector_with_relevance_scores()
Similarity search using **query vector**.
| Name | Type | Purpose | Default |
|-------------|---------------------------|---------|---------|
| `embedding` | `List[float]` | The embedding vector you want to use to search for similar documents in the vector store. | N/A |
| `k` | `Optional[int]` | It specifies the number of documents to return. | `None` |
| `filter` | `Optional[Dict[str, str]]`| It is used to filter the search results by specific metadata criteria. | `None` |
| `name` | `Optional[str]` | It is used for specifying the name of the table to query. | `None` |
| `kwargs` | `Any` | Other keyworded arguments provided by the user. | N/A |
The method returns documents most similar to the specified embedding (query) vector, along with their relevance scores.
```python
docs = docsearch.similarity_search_by_vector_with_relevance_scores(query_embedding)
@@ -155,20 +211,22 @@ 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).
##### max_marginal_relevance_search()
This method returns docs selected using the maximal marginal relevance(MMR).
Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.
| Name | Type | Purpose | Default |
|---------------|-----------------|-----------|---------|
| `query` | `str` | Text to look up documents similar to. | N/A |
| `k` | `Optional[int]` | Number of Documents to return.| `4` |
| `fetch_k`| `Optional[int]`| Number of Documents to fetch to pass to MMR algorithm.| `None` |
| `lambda_mult` | `float` | 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. | `0.5` |
| `filter`| `Optional[Dict[str, str]]`| Filter by metadata. | `None` |
|`kwargs`| Other keyworded arguments provided by the user. |-|
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
@@ -186,12 +244,19 @@ 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.
##### add_images()
This method ddds images by automatically creating their embeddings and adds them to the vectorstore.
| Name | Type | Purpose | Default |
|------------|-------------------------------|--------------------------------|---------|
| `uris` | `List[str]` | File path to the image | N/A |
| `metadatas`| `Optional[List[dict]]` | Optional list of metadatas | `None` |
| `ids` | `Optional[List[str]]` | Optional list of IDs | `None` |
It returns list of IDs of the added images.
```python
vec_store.add_images(uris=image_uris)

View File

@@ -0,0 +1,383 @@
**phidata** is a framework for building **AI Assistants** with long-term memory, contextual knowledge, and the ability to take actions using function calling. It helps turn general-purpose LLMs into specialized assistants tailored to your use case by extending its capabilities using **memory**, **knowledge**, and **tools**.
- **Memory**: Stores chat history in a **database** and enables LLMs to have long-term conversations.
- **Knowledge**: Stores information in a **vector database** and provides LLMs with business context. (Here we will use LanceDB)
- **Tools**: Enable LLMs to take actions like pulling data from an **API**, **sending emails** or **querying a database**, etc.
![example](https://raw.githubusercontent.com/lancedb/assets/refs/heads/main/docs/assets/integration/phidata_assistant.png)
Memory & knowledge make LLMs smarter while tools make them autonomous.
LanceDB is a vector database and its integration into phidata makes it easy for us to provide a **knowledge base** to LLMs. It enables us to store information as [embeddings](../embeddings/understanding_embeddings.md) and search for the **results** similar to ours using **query**.
??? Question "What is Knowledge Base?"
Knowledge Base is a database of information that the Assistant can search to improve its responses. This information is stored in a vector database and provides LLMs with business context, which makes them respond in a context-aware manner.
While any type of storage can act as a knowledge base, vector databases offer the best solution for retrieving relevant results from dense information quickly.
Let's see how using LanceDB inside phidata helps in making LLM more useful:
## Prerequisites: install and import necessary dependencies
**Create a virtual environment**
1. install virtualenv package
```python
pip install virtualenv
```
2. Create a directory for your project and go to the directory and create a virtual environment inside it.
```python
mkdir phi
```
```python
cd phi
```
```python
python -m venv phidata_
```
**Activating virtual environment**
1. from inside the project directory, run the following command to activate the virtual environment.
```python
phidata_/Scripts/activate
```
**Install the following packages in the virtual environment**
```python
pip install lancedb phidata youtube_transcript_api openai ollama numpy pandas
```
**Create python files and import necessary libraries**
You need to create two files - `transcript.py` and `ollama_assistant.py` or `openai_assistant.py`
=== "openai_assistant.py"
```python
import os, openai
from rich.prompt import Prompt
from phi.assistant import Assistant
from phi.knowledge.text import TextKnowledgeBase
from phi.vectordb.lancedb import LanceDb
from phi.llm.openai import OpenAIChat
from phi.embedder.openai import OpenAIEmbedder
from transcript import extract_transcript
if "OPENAI_API_KEY" not in os.environ:
# OR set the key here as a variable
openai.api_key = "sk-..."
# The code below creates a file "transcript.txt" in the directory, the txt file will be used below
youtube_url = "https://www.youtube.com/watch?v=Xs33-Gzl8Mo"
segment_duration = 20
transcript_text,dict_transcript = extract_transcript(youtube_url,segment_duration)
```
=== "ollama_assistant.py"
```python
from rich.prompt import Prompt
from phi.assistant import Assistant
from phi.knowledge.text import TextKnowledgeBase
from phi.vectordb.lancedb import LanceDb
from phi.llm.ollama import Ollama
from phi.embedder.ollama import OllamaEmbedder
from transcript import extract_transcript
# The code below creates a file "transcript.txt" in the directory, the txt file will be used below
youtube_url = "https://www.youtube.com/watch?v=Xs33-Gzl8Mo"
segment_duration = 20
transcript_text,dict_transcript = extract_transcript(youtube_url,segment_duration)
```
=== "transcript.py"
``` python
from youtube_transcript_api import YouTubeTranscriptApi
import re
def smodify(seconds):
hours, remainder = divmod(seconds, 3600)
minutes, seconds = divmod(remainder, 60)
return f"{int(hours):02}:{int(minutes):02}:{int(seconds):02}"
def extract_transcript(youtube_url,segment_duration):
# Extract video ID from the URL
video_id = re.search(r'(?<=v=)[\w-]+', youtube_url)
if not video_id:
video_id = re.search(r'(?<=be/)[\w-]+', youtube_url)
if not video_id:
return None
video_id = video_id.group(0)
# Attempt to fetch the transcript
try:
# Try to get the official transcript
transcript = YouTubeTranscriptApi.get_transcript(video_id, languages=['en'])
except Exception:
# If no official transcript is found, try to get auto-generated transcript
try:
transcript_list = YouTubeTranscriptApi.list_transcripts(video_id)
for transcript in transcript_list:
transcript = transcript.translate('en').fetch()
except Exception:
return None
# Format the transcript into 120s chunks
transcript_text,dict_transcript = format_transcript(transcript,segment_duration)
# Open the file in write mode, which creates it if it doesn't exist
with open("transcript.txt", "w",encoding="utf-8") as file:
file.write(transcript_text)
return transcript_text,dict_transcript
def format_transcript(transcript,segment_duration):
chunked_transcript = []
chunk_dict = []
current_chunk = []
current_time = 0
# 2 minutes in seconds
start_time_chunk = 0 # To track the start time of the current chunk
for segment in transcript:
start_time = segment['start']
end_time_x = start_time + segment['duration']
text = segment['text']
# Add text to the current chunk
current_chunk.append(text)
# Update the current time with the duration of the current segment
# The duration of the current segment is given by segment['start'] - start_time_chunk
if current_chunk:
current_time = start_time - start_time_chunk
# If current chunk duration reaches or exceeds 2 minutes, save the chunk
if current_time >= segment_duration:
# Use the start time of the first segment in the current chunk as the timestamp
chunked_transcript.append(f"[{smodify(start_time_chunk)} to {smodify(end_time_x)}] " + " ".join(current_chunk))
current_chunk = re.sub(r'[\xa0\n]', lambda x: '' if x.group() == '\xa0' else ' ', "\n".join(current_chunk))
chunk_dict.append({"timestamp":f"[{smodify(start_time_chunk)} to {smodify(end_time_x)}]", "text": "".join(current_chunk)})
current_chunk = [] # Reset the chunk
start_time_chunk = start_time + segment['duration'] # Update the start time for the next chunk
current_time = 0 # Reset current time
# Add any remaining text in the last chunk
if current_chunk:
chunked_transcript.append(f"[{smodify(start_time_chunk)} to {smodify(end_time_x)}] " + " ".join(current_chunk))
current_chunk = re.sub(r'[\xa0\n]', lambda x: '' if x.group() == '\xa0' else ' ', "\n".join(current_chunk))
chunk_dict.append({"timestamp":f"[{smodify(start_time_chunk)} to {smodify(end_time_x)}]", "text": "".join(current_chunk)})
return "\n\n".join(chunked_transcript), chunk_dict
```
!!! warning
If creating Ollama assistant, download and install Ollama [from here](https://ollama.com/) and then run the Ollama instance in the background. Also, download the required models using `ollama pull <model-name>`. Check out the models [here](https://ollama.com/library)
**Run the following command to deactivate the virtual environment if needed**
```python
deactivate
```
## **Step 1** - Create a Knowledge Base for AI Assistant using LanceDB
=== "openai_assistant.py"
```python
# Create knowledge Base with OpenAIEmbedder in LanceDB
knowledge_base = TextKnowledgeBase(
path="transcript.txt",
vector_db=LanceDb(
embedder=OpenAIEmbedder(api_key = openai.api_key),
table_name="transcript_documents",
uri="./t3mp/.lancedb",
),
num_documents = 10
)
```
=== "ollama_assistant.py"
```python
# Create knowledge Base with OllamaEmbedder in LanceDB
knowledge_base = TextKnowledgeBase(
path="transcript.txt",
vector_db=LanceDb(
embedder=OllamaEmbedder(model="nomic-embed-text",dimensions=768),
table_name="transcript_documents",
uri="./t2mp/.lancedb",
),
num_documents = 10
)
```
Check out the list of **embedders** supported by **phidata** and their usage [here](https://docs.phidata.com/embedder/introduction).
Here we have used `TextKnowledgeBase`, which loads text/docx files to the knowledge base.
Let's see all the parameters that `TextKnowledgeBase` takes -
| Name| Type | Purpose | Default |
|:----|:-----|:--------|:--------|
|`path`|`Union[str, Path]`| Path to text file(s). It can point to a single text file or a directory of text files.| provided by user |
|`formats`|`List[str]`| File formats accepted by this knowledge base. |`[".txt"]`|
|`vector_db`|`VectorDb`| Vector Database for the Knowledge Base. phidata provides a wrapper around many vector DBs, you can import it like this - `from phi.vectordb.lancedb import LanceDb` | provided by user |
|`num_documents`|`int`| Number of results (documents/vectors) that vector search should return. |`5`|
|`reader`|`TextReader`| phidata provides many types of reader objects which read data, clean it and create chunks of data, encapsulate each chunk inside an object of the `Document` class, and return **`List[Document]`**. | `TextReader()` |
|`optimize_on`|`int`| It is used to specify the number of documents on which to optimize the vector database. Supposed to create an index. |`1000`|
??? Tip "Wonder! What is `Document` class?"
We know that, before storing the data in vectorDB, we need to split the data into smaller chunks upon which embeddings will be created and these embeddings along with the chunks will be stored in vectorDB. When the user queries over the vectorDB, some of these embeddings will be returned as the result based on the semantic similarity with the query.
When the user queries over vectorDB, the queries are converted into embeddings, and a nearest neighbor search is performed over these query embeddings which returns the embeddings that correspond to most semantically similar chunks(parts of our data) present in vectorDB.
Here, a “Document” is a class in phidata. Since there is an option to let phidata create and manage embeddings, it splits our data into smaller chunks(as expected). It does not directly create embeddings on it. Instead, it takes each chunk and encapsulates it inside the object of the `Document` class along with various other metadata related to the chunk. Then embeddings are created on these `Document` objects and stored in vectorDB.
```python
class Document(BaseModel):
"""Model for managing a document"""
content: str # <--- here data of chunk is stored
id: Optional[str] = None
name: Optional[str] = None
meta_data: Dict[str, Any] = {}
embedder: Optional[Embedder] = None
embedding: Optional[List[float]] = None
usage: Optional[Dict[str, Any]] = None
```
However, using phidata you can load many other types of data in the knowledge base(other than text). Check out [phidata Knowledge Base](https://docs.phidata.com/knowledge/introduction) for more information.
Let's dig deeper into the `vector_db` parameter and see what parameters `LanceDb` takes -
| Name| Type | Purpose | Default |
|:----|:-----|:--------|:--------|
|`embedder`|`Embedder`| phidata provides many Embedders that abstract the interaction with embedding APIs and utilize it to generate embeddings. Check out other embedders [here](https://docs.phidata.com/embedder/introduction) | `OpenAIEmbedder` |
|`distance`|`List[str]`| The choice of distance metric used to calculate the similarity between vectors, which directly impacts search results and performance in vector databases. |`Distance.cosine`|
|`connection`|`lancedb.db.LanceTable`| LanceTable can be accessed through `.connection`. You can connect to an existing table of LanceDB, created outside of phidata, and utilize it. If not provided, it creates a new table using `table_name` parameter and adds it to `connection`. |`None`|
|`uri`|`str`| It specifies the directory location of **LanceDB database** and establishes a connection that can be used to interact with the database. | `"/tmp/lancedb"` |
|`table_name`|`str`| If `connection` is not provided, it initializes and connects to a new **LanceDB table** with a specified(or default) name in the database present at `uri`. |`"phi"`|
|`nprobes`|`int`| It refers to the number of partitions that the search algorithm examines to find the nearest neighbors of a given query vector. Higher values will yield better recall (more likely to find vectors if they exist) at the expense of latency. |`20`|
!!! note
Since we just initialized the KnowledgeBase. The VectorDB table that corresponds to this Knowledge Base is not yet populated with our data. It will be populated in **Step 3**, once we perform the `load` operation.
You can check the state of the LanceDB table using - `knowledge_base.vector_db.connection.to_pandas()`
Now that the Knowledge Base is initialized, , we can go to **step 2**.
## **Step 2** - Create an assistant with our choice of LLM and reference to the knowledge base.
=== "openai_assistant.py"
```python
# define an assistant with gpt-4o-mini llm and reference to the knowledge base created above
assistant = Assistant(
llm=OpenAIChat(model="gpt-4o-mini", max_tokens=1000, temperature=0.3,api_key = openai.api_key),
description="""You are an Expert in explaining youtube video transcripts. You are a bot that takes transcript of a video and answer the question based on it.
This is transcript for the above timestamp: {relevant_document}
The user input is: {user_input}
generate highlights only when asked.
When asked to generate highlights from the video, understand the context for each timestamp and create key highlight points, answer in following way -
[timestamp] - highlight 1
[timestamp] - highlight 2
... so on
Your task is to understand the user question, and provide an answer using the provided contexts. Your answers are correct, high-quality, and written by an domain expert. If the provided context does not contain the answer, simply state,'The provided context does not have the answer.'""",
knowledge_base=knowledge_base,
add_references_to_prompt=True,
)
```
=== "ollama_assistant.py"
```python
# define an assistant with llama3.1 llm and reference to the knowledge base created above
assistant = Assistant(
llm=Ollama(model="llama3.1"),
description="""You are an Expert in explaining youtube video transcripts. You are a bot that takes transcript of a video and answer the question based on it.
This is transcript for the above timestamp: {relevant_document}
The user input is: {user_input}
generate highlights only when asked.
When asked to generate highlights from the video, understand the context for each timestamp and create key highlight points, answer in following way -
[timestamp] - highlight 1
[timestamp] - highlight 2
... so on
Your task is to understand the user question, and provide an answer using the provided contexts. Your answers are correct, high-quality, and written by an domain expert. If the provided context does not contain the answer, simply state,'The provided context does not have the answer.'""",
knowledge_base=knowledge_base,
add_references_to_prompt=True,
)
```
Assistants add **memory**, **knowledge**, and **tools** to LLMs. Here we will add only **knowledge** in this example.
Whenever we will give a query to LLM, the assistant will retrieve relevant information from our **Knowledge Base**(table in LanceDB) and pass it to LLM along with the user query in a structured way.
- The `add_references_to_prompt=True` always adds information from the knowledge base to the prompt, regardless of whether it is relevant to the question.
To know more about an creating assistant in phidata, check out [phidata docs](https://docs.phidata.com/assistants/introduction) here.
## **Step 3** - Load data to Knowledge Base.
```python
# load out data into the knowledge_base (populating the LanceTable)
assistant.knowledge_base.load(recreate=False)
```
The above code loads the data to the Knowledge Base(LanceDB Table) and now it is ready to be used by the assistant.
| Name| Type | Purpose | Default |
|:----|:-----|:--------|:--------|
|`recreate`|`bool`| If True, it drops the existing table and recreates the table in the vectorDB. |`False`|
|`upsert`|`bool`| If True and the vectorDB supports upsert, it will upsert documents to the vector db. | `False` |
|`skip_existing`|`bool`| If True, skips documents that already exist in the vectorDB when inserting. |`True`|
??? tip "What is upsert?"
Upsert is a database operation that combines "update" and "insert". It updates existing records if a document with the same identifier does exist, or inserts new records if no matching record exists. This is useful for maintaining the most current information without manually checking for existence.
During the Load operation, phidata directly interacts with the LanceDB library and performs the loading of the table with our data in the following steps -
1. **Creates** and **initializes** the table if it does not exist.
2. Then it **splits** our data into smaller **chunks**.
??? question "How do they create chunks?"
**phidata** provides many types of **Knowledge Bases** based on the type of data. Most of them :material-information-outline:{ title="except LlamaIndexKnowledgeBase and LangChainKnowledgeBase"} has a property method called `document_lists` of type `Iterator[List[Document]]`. During the load operation, this property method is invoked. It traverses on the data provided by us (in this case, a text file(s)) using `reader`. Then it **reads**, **creates chunks**, and **encapsulates** each chunk inside a `Document` object and yields **lists of `Document` objects** that contain our data.
3. Then **embeddings** are created on these chunks are **inserted** into the LanceDB Table
??? question "How do they insert your data as different rows in LanceDB Table?"
The chunks of your data are in the form - **lists of `Document` objects**. It was yielded in the step above.
for each `Document` in `List[Document]`, it does the following operations:
- Creates embedding on `Document`.
- Cleans the **content attribute**(chunks of our data is here) of `Document`.
- Prepares data by creating `id` and loading `payload` with the metadata related to this chunk. (1)
{ .annotate }
1. Three columns will be added to the table - `"id"`, `"vector"`, and `"payload"` (payload contains various metadata including **`content`**)
- Then add this data to LanceTable.
4. Now the internal state of `knowledge_base` is changed (embeddings are created and loaded in the table ) and it **ready to be used by assistant**.
## **Step 4** - Start a cli chatbot with access to the Knowledge base
```python
# start cli chatbot with knowledge base
assistant.print_response("Ask me about something from the knowledge base")
while True:
message = Prompt.ask(f"[bold] :sunglasses: User [/bold]")
if message in ("exit", "bye"):
break
assistant.print_response(message, markdown=True)
```
For more information and amazing cookbooks of phidata, read the [phidata documentation](https://docs.phidata.com/introduction) and also visit [LanceDB x phidata docmentation](https://docs.phidata.com/vectordb/lancedb).

View File

@@ -1,13 +1,73 @@
# FiftyOne
FiftyOne is an open source toolkit for building high-quality datasets and computer vision models. It provides an API to create LanceDB tables and run similarity queries, both programmatically in Python and via point-and-click in the App.
FiftyOne is an open source toolkit that enables users to curate better data and build better models. It includes tools for data exploration, visualization, and management, as well as features for collaboration and sharing.
Any developers, data scientists, and researchers who work with computer vision and machine learning can use FiftyOne to improve the quality of their datasets and deliver insights about their models.
![example](../assets/voxel.gif)
## Basic recipe
**FiftyOne** provides an API to create LanceDB tables and run similarity queries, both **programmatically in Python** and via **point-and-click in the App**.
The basic workflow shown below uses LanceDB to create a similarity index on your FiftyOne
datasets:
Let's get started and see how to use **LanceDB** to create a **similarity index** on your FiftyOne datasets.
## Overview
**[Embeddings](../embeddings/understanding_embeddings.md)** are foundational to all of the **vector search** features. In FiftyOne, embeddings are managed by the [**FiftyOne Brain**](https://docs.voxel51.com/user_guide/brain.html) that provides powerful machine learning techniques designed to transform how you curate your data from an art into a measurable science.
!!!question "Have you ever wanted to find the images most similar to an image in your dataset?"
The **FiftyOne Brain** makes computing **visual similarity** really easy. You can compute the similarity of samples in your dataset using an embedding model and store the results in the **brain key**.
You can then sort your samples by similarity or use this information to find potential duplicate images.
Here we will be doing the following :
1. **Create Index** - In order to run similarity queries against our media, we need to **index** the data. We can do this via the `compute_similarity()` function.
- In the function, specify the **model** you want to use to generate the embedding vectors, and what **vector search engine** you want to use on the **backend** (here LanceDB).
!!!tip
You can also give the similarity index a name(`brain_key`), which is useful if you want to run vector searches against multiple indexes.
2. **Query** - Once you have generated your similarity index, you can query your dataset with `sort_by_similarity()`. The query can be any of the following:
- An ID (sample or patch)
- A query vector of same dimension as the index
- A list of IDs (samples or patches)
- A text prompt (search semantically)
## Prerequisites: install necessary dependencies
1. **Create and activate a virtual environment**
Install virtualenv package and run the following command in your project directory.
```python
python -m venv fiftyone_
```
From inside the project directory run the following to activate the virtual environment.
=== "Windows"
```python
fiftyone_/Scripts/activate
```
=== "macOS/Linux"
```python
source fiftyone_/Scripts/activate
```
2. **Install the following packages in the virtual environment**
To install FiftyOne, ensure you have activated any virtual environment that you are using, then run
```python
pip install fiftyone
```
## Understand basic workflow
The basic workflow shown below uses LanceDB to create a similarity index on your FiftyOne datasets:
1. Load a dataset into FiftyOne.
@@ -19,14 +79,10 @@ datasets:
5. If desired, delete the table.
The example below demonstrates this workflow.
## Quick Example
!!! Note
Let's jump on a quick example that demonstrates this workflow.
Install the LanceDB Python client to run the code shown below.
```
pip install lancedb
```
```python
@@ -36,7 +92,10 @@ import fiftyone.zoo as foz
# Step 1: Load your data into FiftyOne
dataset = foz.load_zoo_dataset("quickstart")
```
Make sure you install torch ([guide here](https://pytorch.org/get-started/locally/)) before proceeding.
```python
# Steps 2 and 3: Compute embeddings and create a similarity index
lancedb_index = fob.compute_similarity(
dataset,
@@ -45,8 +104,11 @@ lancedb_index = fob.compute_similarity(
backend="lancedb",
)
```
Once the similarity index has been generated, we can query our data in FiftyOne
by specifying the `brain_key`:
!!! note
Running the code above will download the clip model (2.6Gb)
Once the similarity index has been generated, we can query our data in FiftyOne by specifying the `brain_key`:
```python
# Step 4: Query your data
@@ -56,7 +118,22 @@ view = dataset.sort_by_similarity(
brain_key="lancedb_index",
k=10, # limit to 10 most similar samples
)
```
The returned result are of type - `DatasetView`.
!!! note
`DatasetView` does not hold its contents in-memory. Views simply store the rule(s) that are applied to extract the content of interest from the underlying Dataset when the view is iterated/aggregated on.
This means, for example, that the contents of a `DatasetView` may change as the underlying Dataset is modified.
??? question "Can you query a view instead of dataset?"
Yes, you can also query a view.
Performing a similarity search on a `DatasetView` will only return results from the view; if the view contains samples that were not included in the index, they will never be included in the result.
This means that you can index an entire Dataset once and then perform searches on subsets of the dataset by constructing views that contain the images of interest.
```python
# Step 5 (optional): Cleanup
# Delete the LanceDB table
@@ -66,4 +143,90 @@ lancedb_index.cleanup()
dataset.delete_brain_run("lancedb_index")
```
## Using LanceDB backend
By default, calling `compute_similarity()` or `sort_by_similarity()` will use an sklearn backend.
To use the LanceDB backend, simply set the optional `backend` parameter of `compute_similarity()` to `"lancedb"`:
```python
import fiftyone.brain as fob
#... rest of the code
fob.compute_similarity(..., backend="lancedb", ...)
```
Alternatively, you can configure FiftyOne to use the LanceDB backend by setting the following environment variable.
In your terminal, set the environment variable using:
=== "Windows"
```python
$Env:FIFTYONE_BRAIN_DEFAULT_SIMILARITY_BACKEND="lancedb" //powershell
set FIFTYONE_BRAIN_DEFAULT_SIMILARITY_BACKEND=lancedb //cmd
```
=== "macOS/Linux"
```python
export FIFTYONE_BRAIN_DEFAULT_SIMILARITY_BACKEND=lancedb
```
!!! note
This will only run during the terminal session. Once terminal is closed, environment variable is deleted.
Alternatively, you can **permanently** configure FiftyOne to use the LanceDB backend creating a `brain_config.json` at `~/.fiftyone/brain_config.json`. The JSON file may contain any desired subset of config fields that you wish to customize.
```json
{
"default_similarity_backend": "lancedb"
}
```
This will override the default `brain_config` and will set it according to your customization. You can check the configuration by running the following code :
```python
import fiftyone.brain as fob
# Print your current brain config
print(fob.brain_config)
```
## LanceDB config parameters
The LanceDB backend supports query parameters that can be used to customize your similarity queries. These parameters include:
| Name| Purpose | Default |
|:----|:--------|:--------|
|**table_name**|The name of the LanceDB table to use. If none is provided, a new table will be created|`None`|
|**metric**|The embedding distance metric to use when creating a new table. The supported values are ("cosine", "euclidean")|`"cosine"`|
|**uri**| The database URI to use. In this Database URI, tables will be created. |`"/tmp/lancedb"`|
There are two ways to specify/customize the parameters:
1. **Using `brain_config.json` file**
```json
{
"similarity_backends": {
"lancedb": {
"table_name": "your-table",
"metric": "euclidean",
"uri": "/tmp/lancedb"
}
}
}
```
2. **Directly passing to `compute_similarity()` to configure a specific new index** :
```python
lancedb_index = fob.compute_similarity(
...
backend="lancedb",
brain_key="lancedb_index",
table_name="your-table",
metric="euclidean",
uri="/tmp/lancedb",
)
```
For a much more in depth walkthrough of the integration, visit the LanceDB x Voxel51 [docs page](https://docs.voxel51.com/integrations/lancedb.html).

View File

@@ -41,7 +41,6 @@ To build everything fresh:
```bash
npm install
npm run tsc
npm run build
```
@@ -51,18 +50,6 @@ Then you should be able to run the tests with:
npm test
```
### Rebuilding Rust library
```bash
npm run build
```
### Rebuilding Typescript
```bash
npm run tsc
```
### Fix lints
To run the linter and have it automatically fix all errors

View File

@@ -38,4 +38,4 @@ A [WriteMode](../enums/WriteMode.md) to use on this operation
#### Defined in
[index.ts:1019](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1019)
[index.ts:1359](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1359)

View File

@@ -30,6 +30,7 @@ A connection to a LanceDB database.
- [dropTable](LocalConnection.md#droptable)
- [openTable](LocalConnection.md#opentable)
- [tableNames](LocalConnection.md#tablenames)
- [withMiddleware](LocalConnection.md#withmiddleware)
## Constructors
@@ -46,7 +47,7 @@ A connection to a LanceDB database.
#### Defined in
[index.ts:489](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L489)
[index.ts:739](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L739)
## Properties
@@ -56,7 +57,7 @@ A connection to a LanceDB database.
#### Defined in
[index.ts:487](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L487)
[index.ts:737](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L737)
___
@@ -74,7 +75,7 @@ ___
#### Defined in
[index.ts:486](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L486)
[index.ts:736](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L736)
## Accessors
@@ -92,7 +93,7 @@ ___
#### Defined in
[index.ts:494](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L494)
[index.ts:744](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L744)
## Methods
@@ -113,7 +114,7 @@ Creates a new Table, optionally initializing it with new data.
| Name | Type |
| :------ | :------ |
| `name` | `string` \| [`CreateTableOptions`](../interfaces/CreateTableOptions.md)\<`T`\> |
| `data?` | `Record`\<`string`, `unknown`\>[] |
| `data?` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] |
| `optsOrEmbedding?` | [`WriteOptions`](../interfaces/WriteOptions.md) \| [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\> |
| `opt?` | [`WriteOptions`](../interfaces/WriteOptions.md) |
@@ -127,7 +128,7 @@ Creates a new Table, optionally initializing it with new data.
#### Defined in
[index.ts:542](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L542)
[index.ts:788](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L788)
___
@@ -158,7 +159,7 @@ ___
#### Defined in
[index.ts:576](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L576)
[index.ts:822](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L822)
___
@@ -184,7 +185,7 @@ Drop an existing table.
#### Defined in
[index.ts:630](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L630)
[index.ts:876](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L876)
___
@@ -210,7 +211,7 @@ Open a table in the database.
#### Defined in
[index.ts:510](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L510)
[index.ts:760](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L760)
**openTable**\<`T`\>(`name`, `embeddings`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
@@ -239,7 +240,7 @@ Connection.openTable
#### Defined in
[index.ts:518](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L518)
[index.ts:768](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L768)
**openTable**\<`T`\>(`name`, `embeddings?`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
@@ -266,7 +267,7 @@ Connection.openTable
#### Defined in
[index.ts:522](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L522)
[index.ts:772](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L772)
___
@@ -286,4 +287,36 @@ Get the names of all tables in the database.
#### Defined in
[index.ts:501](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L501)
[index.ts:751](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L751)
___
### withMiddleware
**withMiddleware**(`middleware`): [`Connection`](../interfaces/Connection.md)
Instrument the behavior of this Connection with middleware.
The middleware will be called in the order they are added.
Currently this functionality is only supported for remote Connections.
#### Parameters
| Name | Type |
| :------ | :------ |
| `middleware` | `HttpMiddleware` |
#### Returns
[`Connection`](../interfaces/Connection.md)
- this Connection instrumented by the passed middleware
#### Implementation of
[Connection](../interfaces/Connection.md).[withMiddleware](../interfaces/Connection.md#withmiddleware)
#### Defined in
[index.ts:880](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L880)

View File

@@ -37,6 +37,8 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
### Methods
- [add](LocalTable.md#add)
- [addColumns](LocalTable.md#addcolumns)
- [alterColumns](LocalTable.md#altercolumns)
- [checkElectron](LocalTable.md#checkelectron)
- [cleanupOldVersions](LocalTable.md#cleanupoldversions)
- [compactFiles](LocalTable.md#compactfiles)
@@ -44,13 +46,16 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
- [createIndex](LocalTable.md#createindex)
- [createScalarIndex](LocalTable.md#createscalarindex)
- [delete](LocalTable.md#delete)
- [dropColumns](LocalTable.md#dropcolumns)
- [filter](LocalTable.md#filter)
- [getSchema](LocalTable.md#getschema)
- [indexStats](LocalTable.md#indexstats)
- [listIndices](LocalTable.md#listindices)
- [mergeInsert](LocalTable.md#mergeinsert)
- [overwrite](LocalTable.md#overwrite)
- [search](LocalTable.md#search)
- [update](LocalTable.md#update)
- [withMiddleware](LocalTable.md#withmiddleware)
## Constructors
@@ -74,7 +79,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:642](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L642)
[index.ts:892](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L892)
**new LocalTable**\<`T`\>(`tbl`, `name`, `options`, `embeddings`)
@@ -95,7 +100,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:649](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L649)
[index.ts:899](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L899)
## Properties
@@ -105,7 +110,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:639](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L639)
[index.ts:889](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L889)
___
@@ -115,7 +120,7 @@ ___
#### Defined in
[index.ts:638](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L638)
[index.ts:888](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L888)
___
@@ -125,7 +130,7 @@ ___
#### Defined in
[index.ts:637](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L637)
[index.ts:887](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L887)
___
@@ -143,7 +148,7 @@ ___
#### Defined in
[index.ts:640](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L640)
[index.ts:890](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L890)
___
@@ -153,7 +158,7 @@ ___
#### Defined in
[index.ts:636](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L636)
[index.ts:886](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L886)
___
@@ -179,7 +184,7 @@ Creates a filter query to find all rows matching the specified criteria
#### Defined in
[index.ts:688](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L688)
[index.ts:938](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L938)
## Accessors
@@ -197,7 +202,7 @@ Creates a filter query to find all rows matching the specified criteria
#### Defined in
[index.ts:668](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L668)
[index.ts:918](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L918)
___
@@ -215,7 +220,7 @@ ___
#### Defined in
[index.ts:849](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L849)
[index.ts:1171](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1171)
## Methods
@@ -229,7 +234,7 @@ Insert records into this Table.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
@@ -243,7 +248,59 @@ The number of rows added to the table
#### Defined in
[index.ts:696](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L696)
[index.ts:946](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L946)
___
### addColumns
**addColumns**(`newColumnTransforms`): `Promise`\<`void`\>
Add new columns with defined values.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `newColumnTransforms` | \{ `name`: `string` ; `valueSql`: `string` }[] | 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`\>
#### Implementation of
[Table](../interfaces/Table.md).[addColumns](../interfaces/Table.md#addcolumns)
#### Defined in
[index.ts:1195](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1195)
___
### alterColumns
**alterColumns**(`columnAlterations`): `Promise`\<`void`\>
Alter the name or nullability of columns.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnAlterations` | [`ColumnAlteration`](../interfaces/ColumnAlteration.md)[] | One or more alterations to apply to columns. |
#### Returns
`Promise`\<`void`\>
#### Implementation of
[Table](../interfaces/Table.md).[alterColumns](../interfaces/Table.md#altercolumns)
#### Defined in
[index.ts:1201](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1201)
___
@@ -257,7 +314,7 @@ ___
#### Defined in
[index.ts:861](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L861)
[index.ts:1183](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1183)
___
@@ -280,7 +337,7 @@ Clean up old versions of the table, freeing disk space.
#### Defined in
[index.ts:808](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L808)
[index.ts:1130](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1130)
___
@@ -307,16 +364,22 @@ Metrics about the compaction operation.
#### Defined in
[index.ts:831](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L831)
[index.ts:1153](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1153)
___
### countRows
**countRows**(): `Promise`\<`number`\>
**countRows**(`filter?`): `Promise`\<`number`\>
Returns the number of rows in this table.
#### Parameters
| Name | Type |
| :------ | :------ |
| `filter?` | `string` |
#### Returns
`Promise`\<`number`\>
@@ -327,7 +390,7 @@ Returns the number of rows in this table.
#### Defined in
[index.ts:749](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L749)
[index.ts:1021](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1021)
___
@@ -357,13 +420,13 @@ VectorIndexParams.
#### Defined in
[index.ts:734](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L734)
[index.ts:1003](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1003)
___
### createScalarIndex
**createScalarIndex**(`column`, `replace`): `Promise`\<`void`\>
**createScalarIndex**(`column`, `replace?`): `Promise`\<`void`\>
Create a scalar index on this Table for the given column
@@ -372,7 +435,7 @@ Create a scalar index on this Table for the given column
| Name | Type | Description |
| :------ | :------ | :------ |
| `column` | `string` | The column to index |
| `replace` | `boolean` | If false, fail if an index already exists on the column Scalar indices, like vector indices, can be used to speed up scans. A scalar index can speed up scans that contain filter expressions on the indexed column. For example, the following scan will be faster if the column `my_col` has a scalar index: ```ts const con = await lancedb.connect('./.lancedb'); const table = await con.openTable('images'); const results = await table.where('my_col = 7').execute(); ``` Scalar indices can also speed up scans containing a vector search and a prefilter: ```ts const con = await lancedb.connect('././lancedb'); const table = await con.openTable('images'); const results = await table.search([1.0, 2.0]).where('my_col != 7').prefilter(true); ``` Scalar indices can only speed up scans for basic filters using equality, comparison, range (e.g. `my_col BETWEEN 0 AND 100`), and set membership (e.g. `my_col IN (0, 1, 2)`) Scalar indices can be used if the filter contains multiple indexed columns and the filter criteria are AND'd or OR'd together (e.g. `my_col < 0 AND other_col> 100`) Scalar indices may be used if the filter contains non-indexed columns but, depending on the structure of the filter, they may not be usable. For example, if the column `not_indexed` does not have a scalar index then the filter `my_col = 0 OR not_indexed = 1` will not be able to use any scalar index on `my_col`. |
| `replace?` | `boolean` | If false, fail if an index already exists on the column it is always set to true for remote connections Scalar indices, like vector indices, can be used to speed up scans. A scalar index can speed up scans that contain filter expressions on the indexed column. For example, the following scan will be faster if the column `my_col` has a scalar index: ```ts const con = await lancedb.connect('./.lancedb'); const table = await con.openTable('images'); const results = await table.where('my_col = 7').execute(); ``` Scalar indices can also speed up scans containing a vector search and a prefilter: ```ts const con = await lancedb.connect('././lancedb'); const table = await con.openTable('images'); const results = await table.search([1.0, 2.0]).where('my_col != 7').prefilter(true); ``` Scalar indices can only speed up scans for basic filters using equality, comparison, range (e.g. `my_col BETWEEN 0 AND 100`), and set membership (e.g. `my_col IN (0, 1, 2)`) Scalar indices can be used if the filter contains multiple indexed columns and the filter criteria are AND'd or OR'd together (e.g. `my_col < 0 AND other_col> 100`) Scalar indices may be used if the filter contains non-indexed columns but, depending on the structure of the filter, they may not be usable. For example, if the column `not_indexed` does not have a scalar index then the filter `my_col = 0 OR not_indexed = 1` will not be able to use any scalar index on `my_col`. |
#### Returns
@@ -392,7 +455,7 @@ await table.createScalarIndex('my_col')
#### Defined in
[index.ts:742](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L742)
[index.ts:1011](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1011)
___
@@ -418,7 +481,38 @@ Delete rows from this table.
#### Defined in
[index.ts:758](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L758)
[index.ts:1030](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1030)
___
### dropColumns
▸ **dropColumns**(`columnNames`): `Promise`\<`void`\>
Drop one or more columns from the dataset
This is a metadata-only operation and does not remove the data from the
underlying storage. In order to remove the data, you must subsequently
call ``compact_files`` to rewrite the data without the removed columns and
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"). |
#### Returns
`Promise`\<`void`\>
#### Implementation of
[Table](../interfaces/Table.md).[dropColumns](../interfaces/Table.md#dropcolumns)
#### Defined in
[index.ts:1205](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1205)
___
@@ -438,9 +532,13 @@ Creates a filter query to find all rows matching the specified criteria
[`Query`](Query.md)\<`T`\>
#### Implementation of
[Table](../interfaces/Table.md).[filter](../interfaces/Table.md#filter)
#### Defined in
[index.ts:684](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L684)
[index.ts:934](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L934)
___
@@ -454,13 +552,13 @@ ___
#### Defined in
[index.ts:854](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L854)
[index.ts:1176](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1176)
___
### indexStats
▸ **indexStats**(`indexUuid`): `Promise`\<[`IndexStats`](../interfaces/IndexStats.md)\>
▸ **indexStats**(`indexName`): `Promise`\<[`IndexStats`](../interfaces/IndexStats.md)\>
Get statistics about an index.
@@ -468,7 +566,7 @@ Get statistics about an index.
| Name | Type |
| :------ | :------ |
| `indexUuid` | `string` |
| `indexName` | `string` |
#### Returns
@@ -480,7 +578,7 @@ Get statistics about an index.
#### Defined in
[index.ts:845](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L845)
[index.ts:1167](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1167)
___
@@ -500,7 +598,57 @@ List the indicies on this table.
#### Defined in
[index.ts:841](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L841)
[index.ts:1163](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1163)
___
### mergeInsert
▸ **mergeInsert**(`on`, `data`, `args`): `Promise`\<`void`\>
Runs a "merge insert" operation on the table
This operation can add rows, update rows, and remove rows all in a single
transaction. It is a very generic tool that can be used to create
behaviors like "insert if not exists", "update or insert (i.e. upsert)",
or even replace a portion of existing data with new data (e.g. replace
all data where month="january")
The merge insert operation works by combining new data from a
**source table** with existing data in a **target table** by using a
join. There are three categories of records.
"Matched" records are records that exist in both the source table and
the target table. "Not matched" records exist only in the source table
(e.g. these are new data) "Not matched by source" records exist only
in the target table (this is old data)
The MergeInsertArgs can be used to customize what should happen for
each category of data.
Please note that the data may appear to be reordered as part of this
operation. This is because updated rows will be deleted from the
dataset and then reinserted at the end with the new values.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `on` | `string` | a column to join on. This is how records from the source table and target table are matched. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | the new data to insert |
| `args` | [`MergeInsertArgs`](../interfaces/MergeInsertArgs.md) | parameters controlling how the operation should behave |
#### Returns
`Promise`\<`void`\>
#### Implementation of
[Table](../interfaces/Table.md).[mergeInsert](../interfaces/Table.md#mergeinsert)
#### Defined in
[index.ts:1065](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1065)
___
@@ -514,7 +662,7 @@ Insert records into this Table, replacing its contents.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
@@ -528,7 +676,7 @@ The number of rows added to the table
#### Defined in
[index.ts:716](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L716)
[index.ts:977](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L977)
___
@@ -554,7 +702,7 @@ Creates a search query to find the nearest neighbors of the given search term
#### Defined in
[index.ts:676](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L676)
[index.ts:926](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L926)
___
@@ -580,4 +728,36 @@ Update rows in this table.
#### Defined in
[index.ts:771](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L771)
[index.ts:1043](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1043)
___
### withMiddleware
▸ **withMiddleware**(`middleware`): [`Table`](../interfaces/Table.md)\<`T`\>
Instrument the behavior of this Table with middleware.
The middleware will be called in the order they are added.
Currently this functionality is only supported for remote tables.
#### Parameters
| Name | Type |
| :------ | :------ |
| `middleware` | `HttpMiddleware` |
#### Returns
[`Table`](../interfaces/Table.md)\<`T`\>
- this Table instrumented by the passed middleware
#### Implementation of
[Table](../interfaces/Table.md).[withMiddleware](../interfaces/Table.md#withmiddleware)
#### Defined in
[index.ts:1209](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1209)

View File

@@ -0,0 +1,82 @@
[vectordb](../README.md) / [Exports](../modules.md) / MakeArrowTableOptions
# Class: MakeArrowTableOptions
Options to control the makeArrowTable call.
## Table of contents
### Constructors
- [constructor](MakeArrowTableOptions.md#constructor)
### Properties
- [dictionaryEncodeStrings](MakeArrowTableOptions.md#dictionaryencodestrings)
- [embeddings](MakeArrowTableOptions.md#embeddings)
- [schema](MakeArrowTableOptions.md#schema)
- [vectorColumns](MakeArrowTableOptions.md#vectorcolumns)
## Constructors
### constructor
**new MakeArrowTableOptions**(`values?`)
#### Parameters
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`MakeArrowTableOptions`](MakeArrowTableOptions.md)\> |
#### Defined in
[arrow.ts:98](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L98)
## Properties
### dictionaryEncodeStrings
**dictionaryEncodeStrings**: `boolean` = `false`
If true then string columns will be encoded with dictionary encoding
Set this to true if your string columns tend to repeat the same values
often. For more precise control use the `schema` property to specify the
data type for individual columns.
If `schema` is provided then this property is ignored.
#### Defined in
[arrow.ts:96](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L96)
___
### embeddings
`Optional` **embeddings**: [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`any`\>
#### Defined in
[arrow.ts:85](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L85)
___
### schema
`Optional` **schema**: `Schema`\<`any`\>
#### Defined in
[arrow.ts:63](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L63)
___
### vectorColumns
**vectorColumns**: `Record`\<`string`, `VectorColumnOptions`\>
#### Defined in
[arrow.ts:81](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L81)

View File

@@ -40,7 +40,7 @@ An embedding function that automatically creates vector representation for a giv
#### Defined in
[embedding/openai.ts:21](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L21)
[embedding/openai.ts:22](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/openai.ts#L22)
## Properties
@@ -50,17 +50,17 @@ An embedding function that automatically creates vector representation for a giv
#### Defined in
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L19)
[embedding/openai.ts:20](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/openai.ts#L20)
___
### \_openai
`Private` `Readonly` **\_openai**: `any`
`Private` `Readonly` **\_openai**: `OpenAI`
#### Defined in
[embedding/openai.ts:18](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L18)
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/openai.ts#L19)
___
@@ -76,7 +76,7 @@ The name of the column that will be used as input for the Embedding Function.
#### Defined in
[embedding/openai.ts:50](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L50)
[embedding/openai.ts:56](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/openai.ts#L56)
## Methods
@@ -102,4 +102,4 @@ Creates a vector representation for the given values.
#### Defined in
[embedding/openai.ts:38](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L38)
[embedding/openai.ts:43](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/openai.ts#L43)

View File

@@ -19,6 +19,7 @@ A builder for nearest neighbor queries for LanceDB.
### Properties
- [\_embeddings](Query.md#_embeddings)
- [\_fastSearch](Query.md#_fastsearch)
- [\_filter](Query.md#_filter)
- [\_limit](Query.md#_limit)
- [\_metricType](Query.md#_metrictype)
@@ -34,6 +35,7 @@ A builder for nearest neighbor queries for LanceDB.
### Methods
- [execute](Query.md#execute)
- [fastSearch](Query.md#fastsearch)
- [filter](Query.md#filter)
- [isElectron](Query.md#iselectron)
- [limit](Query.md#limit)
@@ -65,7 +67,7 @@ A builder for nearest neighbor queries for LanceDB.
#### Defined in
[query.ts:38](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L38)
[query.ts:39](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L39)
## Properties
@@ -75,7 +77,17 @@ A builder for nearest neighbor queries for LanceDB.
#### Defined in
[query.ts:36](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L36)
[query.ts:37](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L37)
___
### \_fastSearch
`Private` **\_fastSearch**: `boolean`
#### Defined in
[query.ts:36](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L36)
___
@@ -85,7 +97,7 @@ ___
#### Defined in
[query.ts:33](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L33)
[query.ts:33](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L33)
___
@@ -95,7 +107,7 @@ ___
#### Defined in
[query.ts:29](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L29)
[query.ts:29](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L29)
___
@@ -105,7 +117,7 @@ ___
#### Defined in
[query.ts:34](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L34)
[query.ts:34](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L34)
___
@@ -115,7 +127,7 @@ ___
#### Defined in
[query.ts:31](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L31)
[query.ts:31](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L31)
___
@@ -125,7 +137,7 @@ ___
#### Defined in
[query.ts:35](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L35)
[query.ts:35](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L35)
___
@@ -135,7 +147,7 @@ ___
#### Defined in
[query.ts:26](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L26)
[query.ts:26](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L26)
___
@@ -145,7 +157,7 @@ ___
#### Defined in
[query.ts:28](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L28)
[query.ts:28](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L28)
___
@@ -155,7 +167,7 @@ ___
#### Defined in
[query.ts:30](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L30)
[query.ts:30](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L30)
___
@@ -165,7 +177,7 @@ ___
#### Defined in
[query.ts:32](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L32)
[query.ts:32](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L32)
___
@@ -175,7 +187,7 @@ ___
#### Defined in
[query.ts:27](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L27)
[query.ts:27](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L27)
___
@@ -201,7 +213,7 @@ A filter statement to be applied to this query.
#### Defined in
[query.ts:87](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L87)
[query.ts:90](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L90)
## Methods
@@ -223,7 +235,30 @@ Execute the query and return the results as an Array of Objects
#### Defined in
[query.ts:115](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L115)
[query.ts:127](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L127)
___
### fastSearch
**fastSearch**(`value`): [`Query`](Query.md)\<`T`\>
Skip searching un-indexed data. This can make search faster, but will miss
any data that is not yet indexed.
#### Parameters
| Name | Type |
| :------ | :------ |
| `value` | `boolean` |
#### Returns
[`Query`](Query.md)\<`T`\>
#### Defined in
[query.ts:119](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L119)
___
@@ -245,7 +280,7 @@ A filter statement to be applied to this query.
#### Defined in
[query.ts:82](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L82)
[query.ts:85](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L85)
___
@@ -259,7 +294,7 @@ ___
#### Defined in
[query.ts:142](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L142)
[query.ts:155](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L155)
___
@@ -268,6 +303,7 @@ ___
**limit**(`value`): [`Query`](Query.md)\<`T`\>
Sets the number of results that will be returned
default value is 10
#### Parameters
@@ -281,7 +317,7 @@ Sets the number of results that will be returned
#### Defined in
[query.ts:55](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L55)
[query.ts:58](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L58)
___
@@ -307,7 +343,7 @@ MetricType for the different options
#### Defined in
[query.ts:102](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L102)
[query.ts:105](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L105)
___
@@ -329,7 +365,7 @@ The number of probes used. A higher number makes search more accurate but also s
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L73)
[query.ts:76](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L76)
___
@@ -349,7 +385,7 @@ ___
#### Defined in
[query.ts:107](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L107)
[query.ts:110](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L110)
___
@@ -371,7 +407,7 @@ Refine the results by reading extra elements and re-ranking them in memory.
#### Defined in
[query.ts:64](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L64)
[query.ts:67](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L67)
___
@@ -393,4 +429,4 @@ Return only the specified columns.
#### Defined in
[query.ts:93](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L93)
[query.ts:96](https://github.com/lancedb/lancedb/blob/92179835/node/src/query.ts#L96)

View File

@@ -0,0 +1,52 @@
[vectordb](../README.md) / [Exports](../modules.md) / IndexStatus
# Enumeration: IndexStatus
## Table of contents
### Enumeration Members
- [Done](IndexStatus.md#done)
- [Failed](IndexStatus.md#failed)
- [Indexing](IndexStatus.md#indexing)
- [Pending](IndexStatus.md#pending)
## Enumeration Members
### Done
**Done** = ``"done"``
#### Defined in
[index.ts:713](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L713)
___
### Failed
• **Failed** = ``"failed"``
#### Defined in
[index.ts:714](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L714)
___
### Indexing
• **Indexing** = ``"indexing"``
#### Defined in
[index.ts:712](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L712)
___
### Pending
• **Pending** = ``"pending"``
#### Defined in
[index.ts:711](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L711)

View File

@@ -22,7 +22,7 @@ Cosine distance
#### Defined in
[index.ts:1041](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1041)
[index.ts:1381](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1381)
___
@@ -34,7 +34,7 @@ Dot product
#### Defined in
[index.ts:1046](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1046)
[index.ts:1386](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1386)
___
@@ -46,4 +46,4 @@ Euclidean distance
#### Defined in
[index.ts:1036](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1036)
[index.ts:1376](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1376)

View File

@@ -22,7 +22,7 @@ Append new data to the table.
#### Defined in
[index.ts:1007](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1007)
[index.ts:1347](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1347)
___
@@ -34,7 +34,7 @@ Create a new [Table](../interfaces/Table.md).
#### Defined in
[index.ts:1003](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1003)
[index.ts:1343](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1343)
___
@@ -46,4 +46,4 @@ Overwrite the existing [Table](../interfaces/Table.md) if presented.
#### Defined in
[index.ts:1005](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1005)
[index.ts:1345](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1345)

View File

@@ -18,7 +18,7 @@
#### Defined in
[index.ts:54](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L54)
[index.ts:68](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L68)
___
@@ -28,7 +28,7 @@ ___
#### Defined in
[index.ts:56](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L56)
[index.ts:70](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L70)
___
@@ -38,4 +38,4 @@ ___
#### Defined in
[index.ts:58](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L58)
[index.ts:72](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L72)

View File

@@ -19,7 +19,7 @@ The number of bytes removed from disk.
#### Defined in
[index.ts:878](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L878)
[index.ts:1218](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1218)
___
@@ -31,4 +31,4 @@ The number of old table versions removed.
#### Defined in
[index.ts:882](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L882)
[index.ts:1222](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1222)

View File

@@ -0,0 +1,53 @@
[vectordb](../README.md) / [Exports](../modules.md) / ColumnAlteration
# Interface: ColumnAlteration
A definition of a column alteration. The alteration changes the column at
`path` to have the new name `name`, to be nullable if `nullable` is true,
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
`Optional` **nullable**: `boolean`
Set the new nullability. Note that a nullable column cannot be made non-nullable.
#### Defined in
[index.ts:638](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L638)
___
### path
**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
[index.ts:633](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L633)
___
### rename
`Optional` **rename**: `string`
#### Defined in
[index.ts:634](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L634)

View File

@@ -22,7 +22,7 @@ fragments added.
#### Defined in
[index.ts:933](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L933)
[index.ts:1273](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1273)
___
@@ -35,7 +35,7 @@ file.
#### Defined in
[index.ts:928](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L928)
[index.ts:1268](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1268)
___
@@ -47,7 +47,7 @@ The number of new fragments that were created.
#### Defined in
[index.ts:923](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L923)
[index.ts:1263](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1263)
___
@@ -59,4 +59,4 @@ The number of fragments that were removed.
#### Defined in
[index.ts:919](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L919)
[index.ts:1259](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1259)

View File

@@ -24,7 +24,7 @@ Default is true.
#### Defined in
[index.ts:901](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L901)
[index.ts:1241](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1241)
___
@@ -38,7 +38,7 @@ the deleted rows. Default is 10%.
#### Defined in
[index.ts:907](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L907)
[index.ts:1247](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1247)
___
@@ -46,11 +46,11 @@ ___
`Optional` **maxRowsPerGroup**: `number`
The maximum number of rows per group. Defaults to 1024.
The maximum number of T per group. Defaults to 1024.
#### Defined in
[index.ts:895](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L895)
[index.ts:1235](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1235)
___
@@ -63,7 +63,7 @@ the number of cores on the machine.
#### Defined in
[index.ts:912](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L912)
[index.ts:1252](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1252)
___
@@ -77,4 +77,4 @@ Defaults to 1024 * 1024.
#### Defined in
[index.ts:891](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L891)
[index.ts:1231](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1231)

View File

@@ -22,6 +22,7 @@ Connection could be local against filesystem or remote against a server.
- [dropTable](Connection.md#droptable)
- [openTable](Connection.md#opentable)
- [tableNames](Connection.md#tablenames)
- [withMiddleware](Connection.md#withmiddleware)
## Properties
@@ -31,7 +32,7 @@ Connection could be local against filesystem or remote against a server.
#### Defined in
[index.ts:183](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L183)
[index.ts:261](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L261)
## Methods
@@ -59,7 +60,7 @@ Creates a new Table, optionally initializing it with new data.
#### Defined in
[index.ts:207](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L207)
[index.ts:285](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L285)
**createTable**(`name`, `data`): `Promise`\<[`Table`](Table.md)\<`number`[]\>\>
@@ -70,7 +71,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
#### Returns
@@ -78,7 +79,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:221](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L221)
[index.ts:299](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L299)
**createTable**(`name`, `data`, `options`): `Promise`\<[`Table`](Table.md)\<`number`[]\>\>
@@ -89,7 +90,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `options` | [`WriteOptions`](WriteOptions.md) | The write options to use when creating the table. |
#### Returns
@@ -98,7 +99,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:233](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L233)
[index.ts:311](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L311)
**createTable**\<`T`\>(`name`, `data`, `embeddings`): `Promise`\<[`Table`](Table.md)\<`T`\>\>
@@ -115,7 +116,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `embeddings` | [`EmbeddingFunction`](EmbeddingFunction.md)\<`T`\> | An embedding function to use on this table |
#### Returns
@@ -124,7 +125,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:246](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L246)
[index.ts:324](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L324)
**createTable**\<`T`\>(`name`, `data`, `embeddings`, `options`): `Promise`\<[`Table`](Table.md)\<`T`\>\>
@@ -141,7 +142,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `embeddings` | [`EmbeddingFunction`](EmbeddingFunction.md)\<`T`\> | An embedding function to use on this table |
| `options` | [`WriteOptions`](WriteOptions.md) | The write options to use when creating the table. |
@@ -151,7 +152,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:259](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L259)
[index.ts:337](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L337)
___
@@ -173,7 +174,7 @@ Drop an existing table.
#### Defined in
[index.ts:270](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L270)
[index.ts:348](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L348)
___
@@ -202,7 +203,7 @@ Open a table in the database.
#### Defined in
[index.ts:193](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L193)
[index.ts:271](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L271)
___
@@ -216,4 +217,32 @@ ___
#### Defined in
[index.ts:185](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L185)
[index.ts:263](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L263)
___
### withMiddleware
**withMiddleware**(`middleware`): [`Connection`](Connection.md)
Instrument the behavior of this Connection with middleware.
The middleware will be called in the order they are added.
Currently this functionality is only supported for remote Connections.
#### Parameters
| Name | Type |
| :------ | :------ |
| `middleware` | `HttpMiddleware` |
#### Returns
[`Connection`](Connection.md)
- this Connection instrumented by the passed middleware
#### Defined in
[index.ts:360](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L360)

View File

@@ -10,7 +10,10 @@
- [awsCredentials](ConnectionOptions.md#awscredentials)
- [awsRegion](ConnectionOptions.md#awsregion)
- [hostOverride](ConnectionOptions.md#hostoverride)
- [readConsistencyInterval](ConnectionOptions.md#readconsistencyinterval)
- [region](ConnectionOptions.md#region)
- [storageOptions](ConnectionOptions.md#storageoptions)
- [timeout](ConnectionOptions.md#timeout)
- [uri](ConnectionOptions.md#uri)
## Properties
@@ -19,9 +22,13 @@
`Optional` **apiKey**: `string`
API key for the remote connections
Can also be passed by setting environment variable `LANCEDB_API_KEY`
#### Defined in
[index.ts:81](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L81)
[index.ts:112](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L112)
___
@@ -33,9 +40,14 @@ User provided AWS crednetials.
If not provided, LanceDB will use the default credentials provider chain.
**`Deprecated`**
Pass `aws_access_key_id`, `aws_secret_access_key`, and `aws_session_token`
through `storageOptions` instead.
#### Defined in
[index.ts:75](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L75)
[index.ts:92](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L92)
___
@@ -43,11 +55,15 @@ ___
`Optional` **awsRegion**: `string`
AWS region to connect to. Default is defaultAwsRegion.
AWS region to connect to. Default is defaultAwsRegion
**`Deprecated`**
Pass `region` through `storageOptions` instead.
#### Defined in
[index.ts:78](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L78)
[index.ts:98](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L98)
___
@@ -55,13 +71,33 @@ ___
`Optional` **hostOverride**: `string`
Override the host URL for the remote connections.
Override the host URL for the remote connection.
This is useful for local testing.
#### Defined in
[index.ts:91](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L91)
[index.ts:122](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L122)
___
### readConsistencyInterval
`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
checked. For performance reasons, this is the default. For strong
consistency, set this to zero seconds. Then every read will check for
updates from other processes. As a compromise, you can set this to a
non-zero value for eventual consistency. If more than that interval
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
[index.ts:140](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L140)
___
@@ -69,11 +105,37 @@ ___
`Optional` **region**: `string`
Region to connect
Region to connect. Default is 'us-east-1'
#### Defined in
[index.ts:84](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L84)
[index.ts:115](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L115)
___
### storageOptions
`Optional` **storageOptions**: `Record`\<`string`, `string`\>
User provided options for object storage. For example, S3 credentials or request timeouts.
The various options are described at https://lancedb.github.io/lancedb/guides/storage/
#### Defined in
[index.ts:105](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L105)
___
### timeout
`Optional` **timeout**: `number`
Duration in milliseconds for request timeout. Default = 10,000 (10 seconds)
#### Defined in
[index.ts:127](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L127)
___
@@ -85,8 +147,8 @@ LanceDB database URI.
- `/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 (SaaS)
- `db://host:port` - remote database (LanceDB cloud)
#### Defined in
[index.ts:69](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L69)
[index.ts:83](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L83)

View File

@@ -26,7 +26,7 @@
#### Defined in
[index.ts:116](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L116)
[index.ts:163](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L163)
___
@@ -36,7 +36,7 @@ ___
#### Defined in
[index.ts:122](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L122)
[index.ts:169](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L169)
___
@@ -46,7 +46,7 @@ ___
#### Defined in
[index.ts:113](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L113)
[index.ts:160](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L160)
___
@@ -56,7 +56,7 @@ ___
#### Defined in
[index.ts:119](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L119)
[index.ts:166](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L166)
___
@@ -66,4 +66,4 @@ ___
#### Defined in
[index.ts:125](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L125)
[index.ts:172](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L172)

View File

@@ -18,11 +18,29 @@ An embedding function that automatically creates vector representation for a giv
### Properties
- [destColumn](EmbeddingFunction.md#destcolumn)
- [embed](EmbeddingFunction.md#embed)
- [embeddingDataType](EmbeddingFunction.md#embeddingdatatype)
- [embeddingDimension](EmbeddingFunction.md#embeddingdimension)
- [excludeSource](EmbeddingFunction.md#excludesource)
- [sourceColumn](EmbeddingFunction.md#sourcecolumn)
## Properties
### destColumn
`Optional` **destColumn**: `string`
The name of the column that will contain the embedding
By default this is "vector"
#### Defined in
[embedding/embedding_function.ts:49](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L49)
___
### embed
**embed**: (`data`: `T`[]) => `Promise`\<`number`[][]\>
@@ -45,7 +63,54 @@ Creates a vector representation for the given values.
#### Defined in
[embedding/embedding_function.ts:27](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/embedding_function.ts#L27)
[embedding/embedding_function.ts:62](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L62)
___
### embeddingDataType
`Optional` **embeddingDataType**: `Float`\<`Floats`\>
The data type of the embedding
The embedding function should return `number`. This will be converted into
an Arrow float array. By default this will be Float32 but this property can
be used to control the conversion.
#### Defined in
[embedding/embedding_function.ts:33](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L33)
___
### embeddingDimension
`Optional` **embeddingDimension**: `number`
The dimension of the embedding
This is optional, normally this can be determined by looking at the results of
`embed`. If this is not specified, and there is an attempt to apply the embedding
to an empty table, then that process will fail.
#### Defined in
[embedding/embedding_function.ts:42](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L42)
___
### excludeSource
`Optional` **excludeSource**: `boolean`
Should the source column be excluded from the resulting table
By default the source column is included. Set this to true and
only the embedding will be stored.
#### Defined in
[embedding/embedding_function.ts:57](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L57)
___
@@ -57,4 +122,4 @@ The name of the column that will be used as input for the Embedding Function.
#### Defined in
[embedding/embedding_function.ts:22](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/embedding_function.ts#L22)
[embedding/embedding_function.ts:24](https://github.com/lancedb/lancedb/blob/92179835/node/src/embedding/embedding_function.ts#L24)

View File

@@ -6,18 +6,51 @@
### Properties
- [distanceType](IndexStats.md#distancetype)
- [indexType](IndexStats.md#indextype)
- [numIndexedRows](IndexStats.md#numindexedrows)
- [numIndices](IndexStats.md#numindices)
- [numUnindexedRows](IndexStats.md#numunindexedrows)
## Properties
### distanceType
`Optional` **distanceType**: `string`
#### Defined in
[index.ts:728](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L728)
___
### indexType
**indexType**: `string`
#### Defined in
[index.ts:727](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L727)
___
### numIndexedRows
**numIndexedRows**: ``null`` \| `number`
#### Defined in
[index.ts:478](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L478)
[index.ts:725](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L725)
___
### numIndices
• `Optional` **numIndices**: `number`
#### Defined in
[index.ts:729](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L729)
___
@@ -27,4 +60,4 @@ ___
#### Defined in
[index.ts:479](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L479)
[index.ts:726](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L726)

View File

@@ -29,7 +29,7 @@ The column to be indexed
#### Defined in
[index.ts:942](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L942)
[index.ts:1282](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1282)
___
@@ -41,7 +41,7 @@ Cache size of the index
#### Defined in
[index.ts:991](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L991)
[index.ts:1331](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1331)
___
@@ -53,7 +53,7 @@ A unique name for the index
#### Defined in
[index.ts:947](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L947)
[index.ts:1287](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1287)
___
@@ -65,7 +65,7 @@ The max number of iterations for kmeans training.
#### Defined in
[index.ts:962](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L962)
[index.ts:1302](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1302)
___
@@ -77,7 +77,7 @@ Max number of iterations to train OPQ, if `use_opq` is true.
#### Defined in
[index.ts:981](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L981)
[index.ts:1321](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1321)
___
@@ -89,7 +89,7 @@ Metric type, L2 or Cosine
#### Defined in
[index.ts:952](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L952)
[index.ts:1292](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1292)
___
@@ -101,7 +101,7 @@ The number of bits to present one PQ centroid.
#### Defined in
[index.ts:976](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L976)
[index.ts:1316](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1316)
___
@@ -113,7 +113,7 @@ The number of partitions this index
#### Defined in
[index.ts:957](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L957)
[index.ts:1297](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1297)
___
@@ -125,7 +125,7 @@ Number of subvectors to build PQ code
#### Defined in
[index.ts:972](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L972)
[index.ts:1312](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1312)
___
@@ -137,7 +137,7 @@ Replace an existing index with the same name if it exists.
#### Defined in
[index.ts:986](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L986)
[index.ts:1326](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1326)
___
@@ -147,7 +147,7 @@ ___
#### Defined in
[index.ts:993](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L993)
[index.ts:1333](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1333)
___
@@ -159,4 +159,4 @@ Train as optimized product quantization.
#### Defined in
[index.ts:967](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L967)
[index.ts:1307](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1307)

View File

@@ -0,0 +1,73 @@
[vectordb](../README.md) / [Exports](../modules.md) / MergeInsertArgs
# Interface: MergeInsertArgs
## Table of contents
### Properties
- [whenMatchedUpdateAll](MergeInsertArgs.md#whenmatchedupdateall)
- [whenNotMatchedBySourceDelete](MergeInsertArgs.md#whennotmatchedbysourcedelete)
- [whenNotMatchedInsertAll](MergeInsertArgs.md#whennotmatchedinsertall)
## Properties
### whenMatchedUpdateAll
`Optional` **whenMatchedUpdateAll**: `string` \| `boolean`
If true then 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.
If there are multiple matches then the behavior is undefined.
Currently this causes multiple copies of the row to be created
but that behavior is subject to change.
Optionally, a filter can be specified. This should be an SQL
filter where fields with the prefix "target." refer to fields
in the target table (old data) and fields with the prefix
"source." refer to fields in the source table (new data). For
example, the filter "target.lastUpdated < source.lastUpdated" will
only update matched rows when the incoming `lastUpdated` value is
newer.
Rows that do not match the filter will not be updated. Rows that
do not match the filter do become "not matched" rows.
#### Defined in
[index.ts:690](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L690)
___
### whenNotMatchedBySourceDelete
`Optional` **whenNotMatchedBySourceDelete**: `string` \| `boolean`
If true then rows that exist only in the target table (old data)
will be deleted.
If this is a string then it will be treated as an SQL filter and
only rows that both do not match any row in the source table and
match the given filter will be deleted.
This can be used to replace a selection of existing data with
new data.
#### Defined in
[index.ts:707](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L707)
___
### whenNotMatchedInsertAll
`Optional` **whenNotMatchedInsertAll**: `boolean`
If true then rows that exist only in the source table (new data)
will be inserted into the target table.
#### Defined in
[index.ts:695](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L695)

View File

@@ -25,17 +25,26 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
- [delete](Table.md#delete)
- [indexStats](Table.md#indexstats)
- [listIndices](Table.md#listindices)
- [mergeInsert](Table.md#mergeinsert)
- [name](Table.md#name)
- [overwrite](Table.md#overwrite)
- [schema](Table.md#schema)
- [search](Table.md#search)
- [update](Table.md#update)
### Methods
- [addColumns](Table.md#addcolumns)
- [alterColumns](Table.md#altercolumns)
- [dropColumns](Table.md#dropcolumns)
- [filter](Table.md#filter)
- [withMiddleware](Table.md#withmiddleware)
## Properties
### add
**add**: (`data`: `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
**add**: (`data`: `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
#### Type declaration
@@ -47,7 +56,7 @@ Insert records into this Table.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
##### Returns
@@ -57,27 +66,33 @@ The number of rows added to the table
#### Defined in
[index.ts:291](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L291)
[index.ts:381](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L381)
___
### countRows
**countRows**: () => `Promise`\<`number`\>
**countRows**: (`filter?`: `string`) => `Promise`\<`number`\>
#### Type declaration
▸ (): `Promise`\<`number`\>
▸ (`filter?`): `Promise`\<`number`\>
Returns the number of rows in this table.
##### Parameters
| Name | Type |
| :------ | :------ |
| `filter?` | `string` |
##### Returns
`Promise`\<`number`\>
#### Defined in
[index.ts:361](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L361)
[index.ts:454](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L454)
___
@@ -107,17 +122,17 @@ VectorIndexParams.
#### Defined in
[index.ts:306](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L306)
[index.ts:398](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L398)
___
### createScalarIndex
**createScalarIndex**: (`column`: `string`, `replace`: `boolean`) => `Promise`\<`void`\>
**createScalarIndex**: (`column`: `string`, `replace?`: `boolean`) => `Promise`\<`void`\>
#### Type declaration
▸ (`column`, `replace`): `Promise`\<`void`\>
▸ (`column`, `replace?`): `Promise`\<`void`\>
Create a scalar index on this Table for the given column
@@ -126,7 +141,7 @@ Create a scalar index on this Table for the given column
| Name | Type | Description |
| :------ | :------ | :------ |
| `column` | `string` | The column to index |
| `replace` | `boolean` | If false, fail if an index already exists on the column Scalar indices, like vector indices, can be used to speed up scans. A scalar index can speed up scans that contain filter expressions on the indexed column. For example, the following scan will be faster if the column `my_col` has a scalar index: ```ts const con = await lancedb.connect('./.lancedb'); const table = await con.openTable('images'); const results = await table.where('my_col = 7').execute(); ``` Scalar indices can also speed up scans containing a vector search and a prefilter: ```ts const con = await lancedb.connect('././lancedb'); const table = await con.openTable('images'); const results = await table.search([1.0, 2.0]).where('my_col != 7').prefilter(true); ``` Scalar indices can only speed up scans for basic filters using equality, comparison, range (e.g. `my_col BETWEEN 0 AND 100`), and set membership (e.g. `my_col IN (0, 1, 2)`) Scalar indices can be used if the filter contains multiple indexed columns and the filter criteria are AND'd or OR'd together (e.g. `my_col < 0 AND other_col> 100`) Scalar indices may be used if the filter contains non-indexed columns but, depending on the structure of the filter, they may not be usable. For example, if the column `not_indexed` does not have a scalar index then the filter `my_col = 0 OR not_indexed = 1` will not be able to use any scalar index on `my_col`. |
| `replace?` | `boolean` | If false, fail if an index already exists on the column it is always set to true for remote connections Scalar indices, like vector indices, can be used to speed up scans. A scalar index can speed up scans that contain filter expressions on the indexed column. For example, the following scan will be faster if the column `my_col` has a scalar index: ```ts const con = await lancedb.connect('./.lancedb'); const table = await con.openTable('images'); const results = await table.where('my_col = 7').execute(); ``` Scalar indices can also speed up scans containing a vector search and a prefilter: ```ts const con = await lancedb.connect('././lancedb'); const table = await con.openTable('images'); const results = await table.search([1.0, 2.0]).where('my_col != 7').prefilter(true); ``` Scalar indices can only speed up scans for basic filters using equality, comparison, range (e.g. `my_col BETWEEN 0 AND 100`), and set membership (e.g. `my_col IN (0, 1, 2)`) Scalar indices can be used if the filter contains multiple indexed columns and the filter criteria are AND'd or OR'd together (e.g. `my_col < 0 AND other_col> 100`) Scalar indices may be used if the filter contains non-indexed columns but, depending on the structure of the filter, they may not be usable. For example, if the column `not_indexed` does not have a scalar index then the filter `my_col = 0 OR not_indexed = 1` will not be able to use any scalar index on `my_col`. |
##### Returns
@@ -142,7 +157,7 @@ await table.createScalarIndex('my_col')
#### Defined in
[index.ts:356](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L356)
[index.ts:449](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L449)
___
@@ -194,17 +209,17 @@ await tbl.countRows() // Returns 1
#### Defined in
[index.ts:395](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L395)
[index.ts:488](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L488)
___
### indexStats
• **indexStats**: (`indexUuid`: `string`) => `Promise`\<[`IndexStats`](IndexStats.md)\>
• **indexStats**: (`indexName`: `string`) => `Promise`\<[`IndexStats`](IndexStats.md)\>
#### Type declaration
▸ (`indexUuid`): `Promise`\<[`IndexStats`](IndexStats.md)\>
▸ (`indexName`): `Promise`\<[`IndexStats`](IndexStats.md)\>
Get statistics about an index.
@@ -212,7 +227,7 @@ Get statistics about an index.
| Name | Type |
| :------ | :------ |
| `indexUuid` | `string` |
| `indexName` | `string` |
##### Returns
@@ -220,7 +235,7 @@ Get statistics about an index.
#### Defined in
[index.ts:438](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L438)
[index.ts:567](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L567)
___
@@ -240,7 +255,57 @@ List the indicies on this table.
#### Defined in
[index.ts:433](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L433)
[index.ts:562](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L562)
___
### mergeInsert
• **mergeInsert**: (`on`: `string`, `data`: `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[], `args`: [`MergeInsertArgs`](MergeInsertArgs.md)) => `Promise`\<`void`\>
#### Type declaration
▸ (`on`, `data`, `args`): `Promise`\<`void`\>
Runs a "merge insert" operation on the table
This operation can add rows, update rows, and remove rows all in a single
transaction. It is a very generic tool that can be used to create
behaviors like "insert if not exists", "update or insert (i.e. upsert)",
or even replace a portion of existing data with new data (e.g. replace
all data where month="january")
The merge insert operation works by combining new data from a
**source table** with existing data in a **target table** by using a
join. There are three categories of records.
"Matched" records are records that exist in both the source table and
the target table. "Not matched" records exist only in the source table
(e.g. these are new data) "Not matched by source" records exist only
in the target table (this is old data)
The MergeInsertArgs can be used to customize what should happen for
each category of data.
Please note that the data may appear to be reordered as part of this
operation. This is because updated rows will be deleted from the
dataset and then reinserted at the end with the new values.
##### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `on` | `string` | a column to join on. This is how records from the source table and target table are matched. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | the new data to insert |
| `args` | [`MergeInsertArgs`](MergeInsertArgs.md) | parameters controlling how the operation should behave |
##### Returns
`Promise`\<`void`\>
#### Defined in
[index.ts:553](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L553)
___
@@ -250,13 +315,13 @@ ___
#### Defined in
[index.ts:277](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L277)
[index.ts:367](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L367)
___
### overwrite
• **overwrite**: (`data`: `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
• **overwrite**: (`data`: `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
#### Type declaration
@@ -268,7 +333,7 @@ Insert records into this Table, replacing its contents.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
##### Returns
@@ -278,7 +343,7 @@ The number of rows added to the table
#### Defined in
[index.ts:299](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L299)
[index.ts:389](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L389)
___
@@ -288,7 +353,7 @@ ___
#### Defined in
[index.ts:440](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L440)
[index.ts:571](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L571)
___
@@ -314,7 +379,7 @@ Creates a search query to find the nearest neighbors of the given search term
#### Defined in
[index.ts:283](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L283)
[index.ts:373](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L373)
___
@@ -365,4 +430,123 @@ let results = await tbl.search([1, 1]).execute();
#### Defined in
[index.ts:428](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L428)
[index.ts:521](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L521)
## Methods
### addColumns
▸ **addColumns**(`newColumnTransforms`): `Promise`\<`void`\>
Add new columns with defined values.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `newColumnTransforms` | \{ `name`: `string` ; `valueSql`: `string` }[] | 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`\>
#### Defined in
[index.ts:582](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L582)
___
### alterColumns
▸ **alterColumns**(`columnAlterations`): `Promise`\<`void`\>
Alter the name or nullability of columns.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnAlterations` | [`ColumnAlteration`](ColumnAlteration.md)[] | One or more alterations to apply to columns. |
#### Returns
`Promise`\<`void`\>
#### Defined in
[index.ts:591](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L591)
___
### dropColumns
▸ **dropColumns**(`columnNames`): `Promise`\<`void`\>
Drop one or more columns from the dataset
This is a metadata-only operation and does not remove the data from the
underlying storage. In order to remove the data, you must subsequently
call ``compact_files`` to rewrite the data without the removed columns and
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"). |
#### Returns
`Promise`\<`void`\>
#### Defined in
[index.ts:605](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L605)
___
### filter
▸ **filter**(`value`): [`Query`](../classes/Query.md)\<`T`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `value` | `string` |
#### Returns
[`Query`](../classes/Query.md)\<`T`\>
#### Defined in
[index.ts:569](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L569)
___
### withMiddleware
▸ **withMiddleware**(`middleware`): [`Table`](Table.md)\<`T`\>
Instrument the behavior of this Table with middleware.
The middleware will be called in the order they are added.
Currently this functionality is only supported for remote tables.
#### Parameters
| Name | Type |
| :------ | :------ |
| `middleware` | `HttpMiddleware` |
#### Returns
[`Table`](Table.md)\<`T`\>
- this Table instrumented by the passed middleware
#### Defined in
[index.ts:617](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L617)

View File

@@ -20,7 +20,7 @@ new values to set
#### Defined in
[index.ts:454](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L454)
[index.ts:652](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L652)
___
@@ -33,4 +33,4 @@ in which case all rows will be updated.
#### Defined in
[index.ts:448](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L448)
[index.ts:646](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L646)

View File

@@ -20,7 +20,7 @@ new values to set as SQL expressions.
#### Defined in
[index.ts:468](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L468)
[index.ts:666](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L666)
___
@@ -33,4 +33,4 @@ in which case all rows will be updated.
#### Defined in
[index.ts:462](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L462)
[index.ts:660](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L660)

View File

@@ -8,6 +8,7 @@
- [columns](VectorIndex.md#columns)
- [name](VectorIndex.md#name)
- [status](VectorIndex.md#status)
- [uuid](VectorIndex.md#uuid)
## Properties
@@ -18,7 +19,7 @@
#### Defined in
[index.ts:472](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L472)
[index.ts:718](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L718)
___
@@ -28,7 +29,17 @@ ___
#### Defined in
[index.ts:473](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L473)
[index.ts:719](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L719)
___
### status
**status**: [`IndexStatus`](../enums/IndexStatus.md)
#### Defined in
[index.ts:721](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L721)
___
@@ -38,4 +49,4 @@ ___
#### Defined in
[index.ts:474](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L474)
[index.ts:720](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L720)

View File

@@ -24,4 +24,4 @@ A [WriteMode](../enums/WriteMode.md) to use on this operation
#### Defined in
[index.ts:1015](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1015)
[index.ts:1355](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1355)

View File

@@ -6,6 +6,7 @@
### Enumerations
- [IndexStatus](enums/IndexStatus.md)
- [MetricType](enums/MetricType.md)
- [WriteMode](enums/WriteMode.md)
@@ -14,6 +15,7 @@
- [DefaultWriteOptions](classes/DefaultWriteOptions.md)
- [LocalConnection](classes/LocalConnection.md)
- [LocalTable](classes/LocalTable.md)
- [MakeArrowTableOptions](classes/MakeArrowTableOptions.md)
- [OpenAIEmbeddingFunction](classes/OpenAIEmbeddingFunction.md)
- [Query](classes/Query.md)
@@ -21,6 +23,7 @@
- [AwsCredentials](interfaces/AwsCredentials.md)
- [CleanupStats](interfaces/CleanupStats.md)
- [ColumnAlteration](interfaces/ColumnAlteration.md)
- [CompactionMetrics](interfaces/CompactionMetrics.md)
- [CompactionOptions](interfaces/CompactionOptions.md)
- [Connection](interfaces/Connection.md)
@@ -29,6 +32,7 @@
- [EmbeddingFunction](interfaces/EmbeddingFunction.md)
- [IndexStats](interfaces/IndexStats.md)
- [IvfPQIndexConfig](interfaces/IvfPQIndexConfig.md)
- [MergeInsertArgs](interfaces/MergeInsertArgs.md)
- [Table](interfaces/Table.md)
- [UpdateArgs](interfaces/UpdateArgs.md)
- [UpdateSqlArgs](interfaces/UpdateSqlArgs.md)
@@ -42,7 +46,9 @@
### Functions
- [connect](modules.md#connect)
- [convertToTable](modules.md#converttotable)
- [isWriteOptions](modules.md#iswriteoptions)
- [makeArrowTable](modules.md#makearrowtable)
## Type Aliases
@@ -52,7 +58,7 @@
#### Defined in
[index.ts:996](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L996)
[index.ts:1336](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1336)
## Functions
@@ -62,11 +68,11 @@
Connect to a LanceDB instance at the given URI.
Accpeted formats:
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 (SaaS)
- `db://host:port` - remote database (LanceDB cloud)
#### Parameters
@@ -84,7 +90,7 @@ Accpeted formats:
#### Defined in
[index.ts:141](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L141)
[index.ts:188](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L188)
**connect**(`opts`): `Promise`\<[`Connection`](interfaces/Connection.md)\>
@@ -102,7 +108,35 @@ Connect to a LanceDB instance with connection options.
#### Defined in
[index.ts:147](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L147)
[index.ts:194](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L194)
___
### convertToTable
**convertToTable**\<`T`\>(`data`, `embeddings?`, `makeTableOptions?`): `Promise`\<`ArrowTable`\>
#### Type parameters
| Name |
| :------ |
| `T` |
#### Parameters
| Name | Type |
| :------ | :------ |
| `data` | `Record`\<`string`, `unknown`\>[] |
| `embeddings?` | [`EmbeddingFunction`](interfaces/EmbeddingFunction.md)\<`T`\> |
| `makeTableOptions?` | `Partial`\<[`MakeArrowTableOptions`](classes/MakeArrowTableOptions.md)\> |
#### Returns
`Promise`\<`ArrowTable`\>
#### Defined in
[arrow.ts:465](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L465)
___
@@ -122,4 +156,116 @@ value is WriteOptions
#### Defined in
[index.ts:1022](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1022)
[index.ts:1362](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L1362)
___
### makeArrowTable
**makeArrowTable**(`data`, `options?`): `ArrowTable`
An enhanced version of the makeTable function from Apache Arrow
that supports nested fields and embeddings columns.
This function converts an array of Record<String, any> (row-major JS objects)
to an Arrow Table (a columnar structure)
Note that it currently does not support nulls.
If a schema is provided then it will be used to determine the resulting array
types. Fields will also be reordered to fit the order defined by the schema.
If a schema is not provided then the types will be inferred and the field order
will be controlled by the order of properties in the first record.
If the input is empty then a schema must be provided to create an empty table.
When a schema is not specified then data types will be inferred. The inference
rules are as follows:
- boolean => Bool
- number => Float64
- String => Utf8
- Buffer => Binary
- Record<String, any> => Struct
- Array<any> => List
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Record`\<`string`, `any`\>[] | input data |
| `options?` | `Partial`\<[`MakeArrowTableOptions`](classes/MakeArrowTableOptions.md)\> | options to control the makeArrowTable call. |
#### Returns
`ArrowTable`
**`Example`**
```ts
import { fromTableToBuffer, makeArrowTable } from "../arrow";
import { Field, FixedSizeList, Float16, Float32, Int32, Schema } from "apache-arrow";
const schema = new Schema([
new Field("a", new Int32()),
new Field("b", new Float32()),
new Field("c", new FixedSizeList(3, new Field("item", new Float16()))),
]);
const table = makeArrowTable([
{ a: 1, b: 2, c: [1, 2, 3] },
{ a: 4, b: 5, c: [4, 5, 6] },
{ a: 7, b: 8, c: [7, 8, 9] },
], { schema });
```
By default it assumes that the column named `vector` is a vector column
and it will be converted into a fixed size list array of type float32.
The `vectorColumns` option can be used to support other vector column
names and data types.
```ts
const schema = new Schema([
new Field("a", new Float64()),
new Field("b", new Float64()),
new Field(
"vector",
new FixedSizeList(3, new Field("item", new Float32()))
),
]);
const table = makeArrowTable([
{ a: 1, b: 2, vector: [1, 2, 3] },
{ a: 4, b: 5, vector: [4, 5, 6] },
{ a: 7, b: 8, vector: [7, 8, 9] },
]);
assert.deepEqual(table.schema, schema);
```
You can specify the vector column types and names using the options as well
```typescript
const schema = new Schema([
new Field('a', new Float64()),
new Field('b', new Float64()),
new Field('vec1', new FixedSizeList(3, new Field('item', new Float16()))),
new Field('vec2', new FixedSizeList(3, new Field('item', new Float16())))
]);
const table = makeArrowTable([
{ a: 1, b: 2, vec1: [1, 2, 3], vec2: [2, 4, 6] },
{ a: 4, b: 5, vec1: [4, 5, 6], vec2: [8, 10, 12] },
{ a: 7, b: 8, vec1: [7, 8, 9], vec2: [14, 16, 18] }
], {
vectorColumns: {
vec1: { type: new Float16() },
vec2: { type: new Float16() }
}
}
assert.deepEqual(table.schema, schema)
```
#### Defined in
[arrow.ts:198](https://github.com/lancedb/lancedb/blob/92179835/node/src/arrow.ts#L198)

View File

@@ -68,3 +68,25 @@ currently is also a memory intensive operation.
#### Returns
[`Index`](Index.md)
### fts()
> `static` **fts**(`options`?): [`Index`](Index.md)
Create a full text search index
This index is used to search for text data. The index is created by tokenizing the text
into words and then storing occurrences of these words in a data structure called inverted index
that allows for fast search.
During a search the query is tokenized and the inverted index is used to find the rows that
contain the query words. The rows are then scored based on BM25 and the top scoring rows are
sorted and returned.
#### Parameters
**options?**: `Partial`&lt;[`FtsOptions`](../interfaces/FtsOptions.md)&gt;
#### Returns
[`Index`](Index.md)

View File

@@ -501,16 +501,28 @@ Get the schema of the table.
#### search(query)
> `abstract` **search**(`query`): [`VectorQuery`](VectorQuery.md)
> `abstract` **search**(`query`, `queryType`, `ftsColumns`): [`VectorQuery`](VectorQuery.md)
Create a search query to find the nearest neighbors
of the given query vector
of the given query vector, or the documents
with the highest relevance to the query string.
##### Parameters
• **query**: `string`
the query. This will be converted to a vector using the table's provided embedding function
the query. This will be converted to a vector using the table's provided embedding function,
or the query string for full-text search if `queryType` is "fts".
• **queryType**: `string` = `"auto"` \| `"fts"`
the type of query to run. If "auto", the query type will be determined based on the query.
• **ftsColumns**: `string[] | str` = undefined
the columns to search in. If not provided, all indexed columns will be searched.
For now, this can support to search only one column.
##### Returns

View File

@@ -37,6 +37,7 @@
- [IndexOptions](interfaces/IndexOptions.md)
- [IndexStatistics](interfaces/IndexStatistics.md)
- [IvfPqOptions](interfaces/IvfPqOptions.md)
- [FtsOptions](interfaces/FtsOptions.md)
- [TableNamesOptions](interfaces/TableNamesOptions.md)
- [UpdateOptions](interfaces/UpdateOptions.md)
- [WriteOptions](interfaces/WriteOptions.md)

View File

@@ -0,0 +1,25 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / FtsOptions
# Interface: FtsOptions
Options to create an `FTS` index
## Properties
### withPosition?
> `optional` **withPosition**: `boolean`
Whether to store the positions of the term in the document.
If this is true then the index will store the positions of the term in the document.
This allows phrase queries to be run. But it also increases the size of the index,
and the time to build the index.
The default value is true.
***

View File

@@ -1,378 +0,0 @@
{
"cells": [
{
"attachments": {},
"cell_type": "markdown",
"id": "13cb272e",
"metadata": {},
"source": [
"# Code documentation Q&A bot example with LangChain\n",
"\n",
"This Q&A bot will allow you to query your own documentation easily using questions. We'll also demonstrate the use of LangChain and LanceDB using the OpenAI API. \n",
"\n",
"In this example we'll use Pandas 2.0 documentation, but, this could be replaced for your own docs as well\n",
"\n",
"<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>\n",
"\n",
"Scripts - [![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](./examples/Code-Documentation-QA-Bot/main.py) [![JavaScript](https://img.shields.io/badge/javascript-%23323330.svg?style=for-the-badge&logo=javascript&logoColor=%23F7DF1E)](./examples/Code-Documentation-QA-Bot/index.js)"
]
},
{
"cell_type": "code",
"execution_count": 40,
"id": "66638d6c",
"metadata": {},
"outputs": [],
"source": [
"!pip install --quiet openai langchain\n",
"!pip install --quiet -U lancedb"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "d1cdcac3",
"metadata": {},
"source": [
"First, let's get some setup out of the way. As we're using the OpenAI API, ensure that you've set your key (and organization if needed):"
]
},
{
"cell_type": "code",
"execution_count": 42,
"id": "58ee1868",
"metadata": {},
"outputs": [],
"source": [
"from openai import OpenAI\n",
"import os\n",
"\n",
"# Configuring the environment variable OPENAI_API_KEY\n",
"if \"OPENAI_API_KEY\" not in os.environ:\n",
" os.environ[\"OPENAI_API_KEY\"] = \"sk-...\"\n",
"client = OpenAI()\n",
"assert len(client.models.list().data) > 0"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "34f524d3",
"metadata": {},
"source": [
"# Loading in our code documentation, generating embeddings and storing our documents in LanceDB\n",
"\n",
"We're going to use the power of LangChain to help us create our Q&A bot. It comes with several APIs that can make our development much easier as well as a LanceDB integration for vectorstore."
]
},
{
"cell_type": "code",
"execution_count": 43,
"id": "b55d22f1",
"metadata": {},
"outputs": [],
"source": [
"import lancedb\n",
"import re\n",
"import pickle\n",
"import requests\n",
"import zipfile\n",
"from pathlib import Path\n",
"\n",
"from langchain.document_loaders import UnstructuredHTMLLoader\n",
"from langchain.embeddings import OpenAIEmbeddings\n",
"from langchain.text_splitter import RecursiveCharacterTextSplitter\n",
"from langchain.vectorstores import LanceDB\n",
"from langchain.llms import OpenAI\n",
"from langchain.chains import RetrievalQA"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "56cc6d50",
"metadata": {},
"source": [
"To make this easier, we've downloaded Pandas documentation and stored the raw HTML files for you to download. We'll download them and then use LangChain's HTML document readers to parse them and store them in LanceDB as a vector store, along with relevant metadata."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "7da77e75",
"metadata": {},
"outputs": [],
"source": [
"pandas_docs = requests.get(\"https://eto-public.s3.us-west-2.amazonaws.com/datasets/pandas_docs/pandas.documentation.zip\")\n",
"with open('/tmp/pandas.documentation.zip', 'wb') as f:\n",
" f.write(pandas_docs.content)\n",
"\n",
"file = zipfile.ZipFile(\"/tmp/pandas.documentation.zip\")\n",
"file.extractall(path=\"/tmp/pandas_docs\")"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "ae42496c",
"metadata": {},
"source": [
"We'll create a simple helper function that can help to extract metadata, so we can use this downstream when we're wanting to query with filters. In this case, we want to keep the lineage of the uri or path for each document that we process:"
]
},
{
"cell_type": "code",
"execution_count": 44,
"id": "d171d062",
"metadata": {},
"outputs": [],
"source": [
"def get_document_title(document):\n",
" m = str(document.metadata[\"source\"])\n",
" title = re.findall(\"pandas.documentation(.*).html\", m)\n",
" if title[0] is not None:\n",
" return(title[0])\n",
" return ''"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "130162ad",
"metadata": {},
"source": [
"# Pre-processing and loading the documentation\n",
"\n",
"Next, let's pre-process and load the documentation. To make sure we don't need to do this repeatedly if we were updating code, we're caching it using pickle so we can retrieve it again (this could take a few minutes to run the first time you do it). We'll also add some more metadata to the docs here such as the title and version of the code:"
]
},
{
"cell_type": "code",
"execution_count": 45,
"id": "33bfe7d8",
"metadata": {},
"outputs": [],
"source": [
"docs_path = Path(\"docs.pkl\")\n",
"docs = []\n",
"\n",
"if not docs_path.exists():\n",
" for p in Path(\"/tmp/pandas_docs/pandas.documentation\").rglob(\"*.html\"):\n",
" print(p)\n",
" if p.is_dir():\n",
" continue\n",
" loader = UnstructuredHTMLLoader(p)\n",
" raw_document = loader.load()\n",
" \n",
" m = {}\n",
" m[\"title\"] = get_document_title(raw_document[0])\n",
" m[\"version\"] = \"2.0rc0\"\n",
" raw_document[0].metadata = raw_document[0].metadata | m\n",
" raw_document[0].metadata[\"source\"] = str(raw_document[0].metadata[\"source\"])\n",
" docs = docs + raw_document\n",
"\n",
" with docs_path.open(\"wb\") as fh:\n",
" pickle.dump(docs, fh)\n",
"else:\n",
" with docs_path.open(\"rb\") as fh:\n",
" docs = pickle.load(fh)"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "c3852dd3",
"metadata": {},
"source": [
"# Generating embeddings from our docs\n",
"\n",
"Now that we have our raw documents loaded, we need to pre-process them to generate embeddings:"
]
},
{
"cell_type": "code",
"execution_count": 47,
"id": "82230563",
"metadata": {},
"outputs": [],
"source": [
"text_splitter = RecursiveCharacterTextSplitter(\n",
" chunk_size=1000,\n",
" chunk_overlap=200,\n",
")\n",
"documents = text_splitter.split_documents(docs)\n",
"embeddings = OpenAIEmbeddings()"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "43e68215",
"metadata": {},
"source": [
"# Storing and querying with LanceDB\n",
"\n",
"Let's connect to LanceDB so we can store our documents. We'll create a Table to store them in:"
]
},
{
"cell_type": "code",
"execution_count": 48,
"id": "74780a58",
"metadata": {},
"outputs": [],
"source": [
"db = lancedb.connect('/tmp/lancedb')\n",
"table = db.create_table(\"pandas_docs\", data=[\n",
" {\"vector\": embeddings.embed_query(\"Hello World\"), \"text\": \"Hello World\", \"id\": \"1\"}\n",
"], mode=\"overwrite\")\n",
"docsearch = LanceDB.from_documents(documents, embeddings, connection=table)"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "3cb1dc5d",
"metadata": {},
"source": [
"Now let's create our RetrievalQA chain using the LanceDB vector store:"
]
},
{
"cell_type": "code",
"execution_count": 49,
"id": "6a5891ad",
"metadata": {},
"outputs": [],
"source": [
"qa = RetrievalQA.from_chain_type(llm=OpenAI(), chain_type=\"stuff\", retriever=docsearch.as_retriever())"
]
},
{
"attachments": {},
"cell_type": "markdown",
"id": "28d93b85",
"metadata": {},
"source": [
"And that's it! We're all set up. The next step is to run some queries, let's try a few:"
]
},
{
"cell_type": "code",
"execution_count": 50,
"id": "70d88316",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"' The major differences in pandas 2.0 include installing optional dependencies with pip extras, the ability to use any numpy numeric dtype in an Index, and enhancements, notable bug fixes, backwards incompatible API changes, deprecations, and performance improvements.'"
]
},
"execution_count": 50,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"query = \"What are the major differences in pandas 2.0?\"\n",
"qa.run(query)"
]
},
{
"cell_type": "code",
"execution_count": 51,
"id": "85a0397c",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"' 2.0.0rc0'"
]
},
"execution_count": 51,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"query = \"What's the current version of pandas?\"\n",
"qa.run(query)"
]
},
{
"cell_type": "code",
"execution_count": 52,
"id": "923f86c6",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"' Optional dependencies can be installed with pip install \"pandas[all]\" or \"pandas[performance]\". This will install all recommended performance dependencies such as numexpr, bottleneck and numba.'"
]
},
"execution_count": 52,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"query = \"How do I make use of installing optional dependencies?\"\n",
"qa.run(query)"
]
},
{
"cell_type": "code",
"execution_count": 53,
"id": "02082f83",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"\" \\n\\nPandas 2.0 includes a number of API breaking changes, such as increased minimum versions for dependencies, the use of os.linesep for DataFrame.to_csv's line_terminator, and reorganization of the library. See the release notes for a full list of changes.\""
]
},
"execution_count": 53,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"query = \"What are the backwards incompatible API changes in Pandas 2.0?\"\n",
"qa.run(query)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "75cea547",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.10.11"
}
},
"nbformat": 4,
"nbformat_minor": 5
}

View File

@@ -1,297 +0,0 @@
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"![example](https://github.com/lancedb/vectordb-recipes/assets/15766192/799f94a1-a01d-4a5b-a627-2a733bbb4227)\n",
"\n",
" <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)](./examples/multimodal_clip/main.py) |"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"\u001B[1m[\u001B[0m\u001B[34;49mnotice\u001B[0m\u001B[1;39;49m]\u001B[0m\u001B[39;49m A new release of pip available: \u001B[0m\u001B[31;49m22.3.1\u001B[0m\u001B[39;49m -> \u001B[0m\u001B[32;49m23.1.2\u001B[0m\n",
"\u001B[1m[\u001B[0m\u001B[34;49mnotice\u001B[0m\u001B[1;39;49m]\u001B[0m\u001B[39;49m To update, run: \u001B[0m\u001B[32;49mpip install --upgrade pip\u001B[0m\n",
"\n",
"\u001B[1m[\u001B[0m\u001B[34;49mnotice\u001B[0m\u001B[1;39;49m]\u001B[0m\u001B[39;49m A new release of pip available: \u001B[0m\u001B[31;49m22.3.1\u001B[0m\u001B[39;49m -> \u001B[0m\u001B[32;49m23.1.2\u001B[0m\n",
"\u001B[1m[\u001B[0m\u001B[34;49mnotice\u001B[0m\u001B[1;39;49m]\u001B[0m\u001B[39;49m To update, run: \u001B[0m\u001B[32;49mpip install --upgrade pip\u001B[0m\n"
]
}
],
"source": [
"!pip install --quiet -U lancedb\n",
"!pip install --quiet gradio transformers torch torchvision"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import io\n",
"\n",
"import PIL\n",
"import duckdb\n",
"import lancedb"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## First run setup: Download data and pre-process"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"### Get dataset\n",
"\n",
"!wget https://eto-public.s3.us-west-2.amazonaws.com/datasets/diffusiondb_lance.tar.gz\n",
"!tar -xvf diffusiondb_lance.tar.gz\n",
"!mv diffusiondb_test rawdata.lance\n"
]
},
{
"cell_type": "code",
"execution_count": 30,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"<lance.dataset.LanceDataset at 0x3045db590>"
]
},
"execution_count": 30,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"# remove null prompts\n",
"import lance\n",
"import pyarrow.compute as pc\n",
"\n",
"# download s3://eto-public/datasets/diffusiondb/small_10k.lance to this uri\n",
"data = lance.dataset(\"~/datasets/rawdata.lance\").to_table()\n",
"\n",
"# First data processing and full-text-search index\n",
"db = lancedb.connect(\"~/datasets/demo\")\n",
"tbl = db.create_table(\"diffusiondb\", data.filter(~pc.field(\"prompt\").is_null()))\n",
"tbl = tbl.create_fts_index([\"prompt\"])"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Create / Open LanceDB Table"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"db = lancedb.connect(\"~/datasets/demo\")\n",
"tbl = db.open_table(\"diffusiondb\")"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Create CLIP embedding function for the text"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"from transformers import CLIPModel, CLIPProcessor, CLIPTokenizerFast\n",
"\n",
"MODEL_ID = \"openai/clip-vit-base-patch32\"\n",
"\n",
"tokenizer = CLIPTokenizerFast.from_pretrained(MODEL_ID)\n",
"model = CLIPModel.from_pretrained(MODEL_ID)\n",
"processor = CLIPProcessor.from_pretrained(MODEL_ID)\n",
"\n",
"def embed_func(query):\n",
" inputs = tokenizer([query], padding=True, return_tensors=\"pt\")\n",
" text_features = model.get_text_features(**inputs)\n",
" return text_features.detach().numpy()[0]"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Search functions for Gradio"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [],
"source": [
"def find_image_vectors(query):\n",
" emb = embed_func(query)\n",
" code = (\n",
" \"import lancedb\\n\"\n",
" \"db = lancedb.connect('~/datasets/demo')\\n\"\n",
" \"tbl = db.open_table('diffusiondb')\\n\\n\"\n",
" f\"embedding = embed_func('{query}')\\n\"\n",
" \"tbl.search(embedding).limit(9).to_pandas()\"\n",
" )\n",
" return (_extract(tbl.search(emb).limit(9).to_pandas()), code)\n",
"\n",
"def find_image_keywords(query):\n",
" code = (\n",
" \"import lancedb\\n\"\n",
" \"db = lancedb.connect('~/datasets/demo')\\n\"\n",
" \"tbl = db.open_table('diffusiondb')\\n\\n\"\n",
" f\"tbl.search('{query}').limit(9).to_pandas()\"\n",
" )\n",
" return (_extract(tbl.search(query).limit(9).to_pandas()), code)\n",
"\n",
"def find_image_sql(query):\n",
" code = (\n",
" \"import lancedb\\n\"\n",
" \"import duckdb\\n\"\n",
" \"db = lancedb.connect('~/datasets/demo')\\n\"\n",
" \"tbl = db.open_table('diffusiondb')\\n\\n\"\n",
" \"diffusiondb = tbl.to_lance()\\n\"\n",
" f\"duckdb.sql('{query}').to_df()\"\n",
" ) \n",
" diffusiondb = tbl.to_lance()\n",
" return (_extract(duckdb.sql(query).to_df()), code)\n",
"\n",
"def _extract(df):\n",
" image_col = \"image\"\n",
" return [(PIL.Image.open(io.BytesIO(row[image_col])), row[\"prompt\"]) for _, row in df.iterrows()]"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Setup Gradio interface"
]
},
{
"cell_type": "code",
"execution_count": 28,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Running on local URL: http://127.0.0.1:7881\n",
"\n",
"To create a public link, set `share=True` in `launch()`.\n"
]
},
{
"data": {
"text/html": [
"<div><iframe src=\"http://127.0.0.1:7881/\" width=\"100%\" height=\"500\" allow=\"autoplay; camera; microphone; clipboard-read; clipboard-write;\" frameborder=\"0\" allowfullscreen></iframe></div>"
],
"text/plain": [
"<IPython.core.display.HTML object>"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"data": {
"text/plain": []
},
"execution_count": 28,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"import gradio as gr\n",
"\n",
"\n",
"with gr.Blocks() as demo:\n",
" with gr.Row():\n",
" with gr.Tab(\"Embeddings\"):\n",
" vector_query = gr.Textbox(value=\"portraits of a person\", show_label=False)\n",
" b1 = gr.Button(\"Submit\")\n",
" with gr.Tab(\"Keywords\"):\n",
" keyword_query = gr.Textbox(value=\"ninja turtle\", show_label=False)\n",
" b2 = gr.Button(\"Submit\")\n",
" with gr.Tab(\"SQL\"):\n",
" sql_query = gr.Textbox(value=\"SELECT * from diffusiondb WHERE image_nsfw >= 2 LIMIT 9\", show_label=False)\n",
" b3 = gr.Button(\"Submit\")\n",
" with gr.Row():\n",
" code = gr.Code(label=\"Code\", language=\"python\")\n",
" with gr.Row():\n",
" gallery = gr.Gallery(\n",
" label=\"Found images\", show_label=False, elem_id=\"gallery\"\n",
" ).style(columns=[3], rows=[3], object_fit=\"contain\", height=\"auto\") \n",
" \n",
" b1.click(find_image_vectors, inputs=vector_query, outputs=[gallery, code])\n",
" b2.click(find_image_keywords, inputs=keyword_query, outputs=[gallery, code])\n",
" b3.click(find_image_sql, inputs=sql_query, outputs=[gallery, code])\n",
" \n",
"demo.launch()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3.11.4 64-bit",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.11.4"
},
"vscode": {
"interpreter": {
"hash": "b0fa6594d8f4cbf19f97940f81e996739fb7646882a419484c72d19e05852a7e"
}
}
},
"nbformat": 4,
"nbformat_minor": 1
}

File diff suppressed because one or more lines are too long

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**Adaptive RAG 🤹‍♂️**
====================================================================
Adaptive RAG introduces a RAG technique that combines query analysis with self-corrective RAG.
For Query Analysis, it uses a small classifier(LLM), to decide the querys complexity. Query Analysis helps routing smoothly to adjust between different retrieval strategies No retrieval, Single-shot RAG or Iterative RAG.
**[Official Paper](https://arxiv.org/pdf/2403.14403)**
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/adaptive_rag.png)
<figcaption>Adaptive-RAG: <a href="https://github.com/starsuzi/Adaptive-RAG">Source</a>
</figcaption>
</figure>
**[Offical Implementation](https://github.com/starsuzi/Adaptive-RAG)**
Heres a code snippet for query analysis
```python
from langchain_core.prompts import ChatPromptTemplate
from langchain_core.pydantic_v1 import BaseModel, Field
from langchain_openai import ChatOpenAI
class RouteQuery(BaseModel):
"""Route a user query to the most relevant datasource."""
datasource: Literal["vectorstore", "web_search"] = Field(
...,
description="Given a user question choose to route it to web search or a vectorstore.",
)
# LLM with function call
llm = ChatOpenAI(model="gpt-3.5-turbo-0125", temperature=0)
structured_llm_router = llm.with_structured_output(RouteQuery)
```
For defining and querying retriever
```python
# add documents in LanceDB
vectorstore = LanceDB.from_documents(
documents=doc_splits,
embedding=OpenAIEmbeddings(),
)
retriever = vectorstore.as_retriever()
# query using defined retriever
question = "How adaptive RAG works"
docs = retriever.get_relevant_documents(question)
```

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@@ -0,0 +1,38 @@
**FLARE 💥**
====================================================================
FLARE, stands for Forward-Looking Active REtrieval augmented generation is a generic retrieval-augmented generation method that actively decides when and what to retrieve using a prediction of the upcoming sentence to anticipate future content and utilize it as the query to retrieve relevant documents if it contains low-confidence tokens.
**[Official Paper](https://arxiv.org/abs/2305.06983)**
<figure markdown="span">
![flare](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/flare.gif)
<figcaption>FLARE: <a href="https://github.com/jzbjyb/FLARE">Source</a></figcaption>
</figure>
[![Open In Colab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR/main.ipynb)
Heres a code snippet for using FLARE with Langchain
```python
from langchain.vectorstores import LanceDB
from langchain.document_loaders import ArxivLoader
from langchain.chains import FlareChain
from langchain.prompts import PromptTemplate
from langchain.chains import LLMChain
from langchain.llms import OpenAI
llm = OpenAI()
# load dataset
# LanceDB retriever
vector_store = LanceDB.from_documents(doc_chunks, embeddings, connection=table)
retriever = vector_store.as_retriever()
# define flare chain
flare = FlareChain.from_llm(llm=llm,retriever=vector_store_retriever,max_generation_len=300,min_prob=0.45)
result = flare.run(input_text)
```
[![Open In Colab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR/main.ipynb)

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**HyDE: Hypothetical Document Embeddings 🤹‍♂️**
====================================================================
HyDE, stands for Hypothetical Document Embeddings is an approach used for precise zero-shot dense retrieval without relevance labels. It focuses on augmenting and improving similarity searches, often intertwined with vector stores in information retrieval. The method generates a hypothetical document for an incoming query, which is then embedded and used to look up real documents that are similar to the hypothetical document.
**[Official Paper](https://arxiv.org/pdf/2212.10496)**
<figure markdown="span">
![hyde](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/hyde.png)
<figcaption>HyDE: <a href="https://arxiv.org/pdf/2212.10496">Source</a></figcaption>
</figure>
[![Open In Colab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE/main.ipynb)
Heres a code snippet for using HyDE with Langchain
```python
from langchain.llms import OpenAI
from langchain.embeddings import OpenAIEmbeddings
from langchain.prompts import PromptTemplate
from langchain.chains import LLMChain, HypotheticalDocumentEmbedder
from langchain.vectorstores import LanceDB
# set OPENAI_API_KEY as env variable before this step
# initialize LLM and embedding function
llm = OpenAI()
emebeddings = OpenAIEmbeddings()
# HyDE embedding
embeddings = HypotheticalDocumentEmbedder(llm_chain=llm_chain,base_embeddings=embeddings)
# load dataset
# LanceDB retriever
retriever = LanceDB.from_documents(documents, embeddings, connection=table)
# prompt template
prompt_template = """
As a knowledgeable and helpful research assistant, your task is to provide informative answers based on the given context. Use your extensive knowledge base to offer clear, concise, and accurate responses to the user's inquiries.
if quetion is not related to documents simply say you dont know
Question: {question}
Answer:
"""
prompt = PromptTemplate(input_variables=["question"], template=prompt_template)
# LLM Chain
llm_chain = LLMChain(llm=llm, prompt=prompt)
# vector search
retriever.similarity_search(query)
llm_chain.run(query)
```
[![Open In Colab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE/main.ipynb)

101
docs/src/rag/agentic_rag.md Normal file
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**Agentic RAG 🤖**
====================================================================
Agentic RAG is Agent-based RAG introduces an advanced framework for answering questions by using intelligent agents instead of just relying on large language models. These agents act like expert researchers, handling complex tasks such as detailed planning, multi-step reasoning, and using external tools. They navigate multiple documents, compare information, and generate accurate answers. This system is easily scalable, with each new document set managed by a sub-agent, making it a powerful tool for tackling a wide range of information needs.
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/agentic_rag.png)
<figcaption>Agent-based RAG</figcaption>
</figure>
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG/main.ipynb)
Heres a code snippet for defining retriever using Langchain
```python
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_community.document_loaders import WebBaseLoader
from langchain_community.vectorstores import LanceDB
from langchain_openai import OpenAIEmbeddings
urls = [
"https://content.dgft.gov.in/Website/CIEP.pdf",
"https://content.dgft.gov.in/Website/GAE.pdf",
"https://content.dgft.gov.in/Website/HTE.pdf",
]
docs = [WebBaseLoader(url).load() for url in urls]
docs_list = [item for sublist in docs for item in sublist]
text_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
chunk_size=100, chunk_overlap=50
)
doc_splits = text_splitter.split_documents(docs_list)
# add documents in LanceDB
vectorstore = LanceDB.from_documents(
documents=doc_splits,
embedding=OpenAIEmbeddings(),
)
retriever = vectorstore.as_retriever()
```
Agent that formulates an improved query for better retrieval results and then grades the retrieved documents
```python
def grade_documents(state) -> Literal["generate", "rewrite"]:
class grade(BaseModel):
binary_score: str = Field(description="Relevance score 'yes' or 'no'")
model = ChatOpenAI(temperature=0, model="gpt-4-0125-preview", streaming=True)
llm_with_tool = model.with_structured_output(grade)
prompt = PromptTemplate(
template="""You are a grader assessing relevance of a retrieved document to a user question. \n
Here is the retrieved document: \n\n {context} \n\n
Here is the user question: {question} \n
If the document contains keyword(s) or semantic meaning related to the user question, grade it as relevant. \n
Give a binary score 'yes' or 'no' score to indicate whether the document is relevant to the question.""",
input_variables=["context", "question"],
)
chain = prompt | llm_with_tool
messages = state["messages"]
last_message = messages[-1]
question = messages[0].content
docs = last_message.content
scored_result = chain.invoke({"question": question, "context": docs})
score = scored_result.binary_score
return "generate" if score == "yes" else "rewrite"
def agent(state):
messages = state["messages"]
model = ChatOpenAI(temperature=0, streaming=True, model="gpt-4-turbo")
model = model.bind_tools(tools)
response = model.invoke(messages)
return {"messages": [response]}
def rewrite(state):
messages = state["messages"]
question = messages[0].content
msg = [
HumanMessage(
content=f""" \n
Look at the input and try to reason about the underlying semantic intent / meaning. \n
Here is the initial question:
\n ------- \n
{question}
\n ------- \n
Formulate an improved question: """,
)
]
model = ChatOpenAI(temperature=0, model="gpt-4-0125-preview", streaming=True)
response = model.invoke(msg)
return {"messages": [response]}
```
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG/main.ipynb)

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**Corrective RAG ✅**
====================================================================
Corrective-RAG (CRAG) is a strategy for Retrieval-Augmented Generation (RAG) that includes self-reflection and self-grading of retrieved documents. Heres a simplified breakdown of the steps involved:
1. **Relevance Check**: If at least one document meets the relevance threshold, the process moves forward to the generation phase.
2. **Knowledge Refinement**: Before generating an answer, the process refines the knowledge by dividing the document into smaller segments called "knowledge strips."
3. **Grading and Filtering**: Each "knowledge strip" is graded, and irrelevant ones are filtered out.
4. **Additional Data Source**: If all documents are below the relevance threshold, or if the system is unsure about their relevance, it will seek additional information by performing a web search to supplement the retrieved data.
Above steps are mentioned in
**[Official Paper](https://arxiv.org/abs/2401.15884)**
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/crag_paper.png)
<figcaption>Corrective RAG: <a href="https://github.com/HuskyInSalt/CRAG">Source</a>
</figcaption>
</figure>
Corrective Retrieval-Augmented Generation (CRAG) is a method that works like a **built-in fact-checker**.
**[Offical Implementation](https://github.com/HuskyInSalt/CRAG)**
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph/CRAG_with_Langgraph.ipynb)
Heres a code snippet for defining a table with the [Embedding API](https://lancedb.github.io/lancedb/embeddings/embedding_functions/), and retrieves the relevant documents.
```python
import pandas as pd
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 Docs(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("docs", schema=Docs)
# considering chunks are in list format
df = pd.DataFrame({'text':chunks})
table.add(data=df)
# as per document feeded
query = "How Transformers work?"
actual = table.search(query).limit(1).to_list()[0]
print(actual.text)
```
Code snippet for grading retrieved documents, filtering out irrelevant ones, and performing a web search if necessary:
```python
def grade_documents(state):
"""
Determines whether the retrieved documents are relevant to the question
Args:
state (dict): The current graph state
Returns:
state (dict): Updates documents key with relevant documents
"""
state_dict = state["keys"]
question = state_dict["question"]
documents = state_dict["documents"]
class grade(BaseModel):
"""
Binary score for relevance check
"""
binary_score: str = Field(description="Relevance score 'yes' or 'no'")
model = ChatOpenAI(temperature=0, model="gpt-4-0125-preview", streaming=True)
# grading using openai
grade_tool_oai = convert_to_openai_tool(grade)
llm_with_tool = model.bind(
tools=[convert_to_openai_tool(grade_tool_oai)],
tool_choice={"type": "function", "function": {"name": "grade"}},
)
parser_tool = PydanticToolsParser(tools=[grade])
prompt = PromptTemplate(
template="""You are a grader assessing relevance of a retrieved document to a user question. \n
Here is the retrieved document: \n\n {context} \n\n
Here is the user question: {question} \n
If the document contains keyword(s) or semantic meaning related to the user question, grade it as relevant. \n
Give a binary score 'yes' or 'no' score to indicate whether the document is relevant to the question.""",
input_variables=["context", "question"],
)
chain = prompt | llm_with_tool | parser_tool
filtered_docs = []
search = "No"
for d in documents:
score = chain.invoke({"question": question, "context": d.page_content})
grade = score[0].binary_score
if grade == "yes":
filtered_docs.append(d)
else:
search = "Yes"
continue
return {
"keys": {
"documents": filtered_docs,
"question": question,
"run_web_search": search,
}
}
```
Check Colab for the Implementation of CRAG with Langgraph
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph/CRAG_with_Langgraph.ipynb)

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**Graph RAG 📊**
====================================================================
Graph RAG uses knowledge graphs together with large language models (LLMs) to improve how information is retrieved and generated. It overcomes the limits of traditional search methods by using knowledge graphs, which organize data as connected entities and relationships.
One of the main benefits of Graph RAG is its ability to capture and represent complex relationships between entities, something that traditional text-based retrieval systems struggle with. By using this structured knowledge, LLMs can better grasp the context and details of a query, resulting in more accurate and insightful answers.
**[Official Paper](https://arxiv.org/pdf/2404.16130)**
**[Offical Implementation](https://github.com/microsoft/graphrag)**
[Microsoft Research Blog](https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/)
!!! note "Default VectorDB"
Graph RAG uses LanceDB as the default vector database for performing vector search to retrieve relevant entities.
Working with Graph RAG is quite straightforward
- **Installation and API KEY as env variable**
Set `OPENAI_API_KEY` as `GRAPHRAG_API_KEY`
```bash
pip install graphrag
export GRAPHRAG_API_KEY="sk-..."
```
- **Initial structure for indexing dataset**
```bash
python3 -m graphrag.index --init --root dataset-dir
```
- **Index Dataset**
```bash
python3 -m graphrag.index --root dataset-dir
```
- **Execute Query**
Global Query Execution gives a broad overview of dataset
```bash
python3 -m graphrag.query --root dataset-dir --method global "query-question"
```
Local Query Execution gives a detailed and specific answers based on the context of the entities
```bash
python3 -m graphrag.query --root dataset-dir --method local "query-question"
```
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Graphrag/main.ipynb)

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**Multi-Head RAG 📃**
====================================================================
Multi-head RAG (MRAG) is designed to handle queries that need multiple documents with diverse content. These queries are tough because the documents embeddings can be far apart, making retrieval difficult. MRAG simplifies this by using the activations from a Transformer's multi-head attention layer, rather than the decoder layer, to fetch these varied documents. Different attention heads capture different aspects of the data, so using these activations helps create embeddings that better represent various data facets and improves retrieval accuracy for complex queries.
**[Official Paper](https://arxiv.org/pdf/2406.05085)**
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/mrag-paper.png)
<figcaption>Multi-Head RAG: <a href="https://github.com/spcl/MRAG">Source</a>
</figcaption>
</figure>
MRAG is cost-effective and energy-efficient because it avoids extra LLM queries, multiple model instances, increased storage, and additional inference passes.
**[Official Implementation](https://github.com/spcl/MRAG)**
Heres a code snippet for defining different embedding spaces with the [Embedding API](https://lancedb.github.io/lancedb/embeddings/embedding_functions/)
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
# model definition using LanceDB Embedding API
model1 = get_registry().get("openai").create()
model2 = get_registry().get("ollama").create(name="llama3")
model3 = get_registry().get("ollama").create(name="mistral")
# define schema for creating embedding spaces with Embedding API
class Space1(LanceModel):
text: str = model1.SourceField()
vector: Vector(model1.ndims()) = model1.VectorField()
class Space2(LanceModel):
text: str = model2.SourceField()
vector: Vector(model2.ndims()) = model2.VectorField()
class Space3(LanceModel):
text: str = model3.SourceField()
vector: Vector(model3.ndims()) = model3.VectorField()
```
Create different tables using defined embedding spaces, then make queries to each embedding space. Use the resulted closest documents from each embedding space to generate answers.

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**Self RAG 🤳**
====================================================================
Self-RAG is a strategy for Retrieval-Augmented Generation (RAG) to get better retrieved information, generated text, and checking their own work, all without losing their flexibility. Unlike the traditional Retrieval-Augmented Generation (RAG) method, Self-RAG retrieves information as needed, can skip retrieval if not needed, and evaluates its own output while generating text. It also uses a process to pick the best output based on different preferences.
**[Official Paper](https://arxiv.org/pdf/2310.11511)**
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/self_rag.png)
<figcaption>Self RAG: <a href="https://github.com/AkariAsai/self-rag">Source</a>
</figcaption>
</figure>
**[Offical Implementation](https://github.com/AkariAsai/self-rag)**
Self-RAG starts by generating a response without retrieving extra info if it's not needed. For questions that need more details, it retrieves to get the necessary information.
Heres a code snippet for defining retriever using Langchain
```python
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_community.document_loaders import WebBaseLoader
from langchain_community.vectorstores import LanceDB
from langchain_openai import OpenAIEmbeddings
urls = [
"https://lilianweng.github.io/posts/2023-06-23-agent/",
"https://lilianweng.github.io/posts/2023-03-15-prompt-engineering/",
"https://lilianweng.github.io/posts/2023-10-25-adv-attack-llm/",
]
docs = [WebBaseLoader(url).load() for url in urls]
docs_list = [item for sublist in docs for item in sublist]
text_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
chunk_size=100, chunk_overlap=50
)
doc_splits = text_splitter.split_documents(docs_list)
# add documents in LanceDB
vectorstore = LanceDB.from_documents(
documents=doc_splits,
embedding=OpenAIEmbeddings(),
)
retriever = vectorstore.as_retriever()
```
Functions that grades the retrieved documents and if required formulates an improved query for better retrieval results
```python
def grade_documents(state) -> Literal["generate", "rewrite"]:
class grade(BaseModel):
binary_score: str = Field(description="Relevance score 'yes' or 'no'")
model = ChatOpenAI(temperature=0, model="gpt-4-0125-preview", streaming=True)
llm_with_tool = model.with_structured_output(grade)
prompt = PromptTemplate(
template="""You are a grader assessing relevance of a retrieved document to a user question. \n
Here is the retrieved document: \n\n {context} \n\n
Here is the user question: {question} \n
If the document contains keyword(s) or semantic meaning related to the user question, grade it as relevant. \n
Give a binary score 'yes' or 'no' score to indicate whether the document is relevant to the question.""",
input_variables=["context", "question"],
)
chain = prompt | llm_with_tool
messages = state["messages"]
last_message = messages[-1]
question = messages[0].content
docs = last_message.content
scored_result = chain.invoke({"question": question, "context": docs})
score = scored_result.binary_score
return "generate" if score == "yes" else "rewrite"
def rewrite(state):
messages = state["messages"]
question = messages[0].content
msg = [
HumanMessage(
content=f""" \n
Look at the input and try to reason about the underlying semantic intent / meaning. \n
Here is the initial question:
\n ------- \n
{question}
\n ------- \n
Formulate an improved question: """,
)
]
model = ChatOpenAI(temperature=0, model="gpt-4-0125-preview", streaming=True)
response = model.invoke(msg)
return {"messages": [response]}
```

17
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**SFR RAG 📑**
====================================================================
Salesforce AI Research introduces SFR-RAG, a 9-billion-parameter language model trained with a significant emphasis on reliable, precise, and faithful contextual generation abilities specific to real-world RAG use cases and relevant agentic tasks. They include precise factual knowledge extraction, distinguishing relevant against distracting contexts, citing appropriate sources along with answers, producing complex and multi-hop reasoning over multiple contexts, consistent format following, as well as refraining from hallucination over unanswerable queries.
**[Offical Implementation](https://github.com/SalesforceAIResearch/SFR-RAG)**
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/salesforce_contextbench.png)
<figcaption>Average Scores in ContextualBench: <a href="https://blog.salesforceairesearch.com/sfr-rag/">Source</a>
</figcaption>
</figure>
To reliably evaluate LLMs in contextual question-answering for RAG, Saleforce introduced [ContextualBench](https://huggingface.co/datasets/Salesforce/ContextualBench?ref=blog.salesforceairesearch.com), featuring 7 benchmarks like [HotpotQA](https://arxiv.org/abs/1809.09600?ref=blog.salesforceairesearch.com) and [2WikiHopQA](https://www.aclweb.org/anthology/2020.coling-main.580/?ref=blog.salesforceairesearch.com) with consistent setups.
SFR-RAG outperforms GPT-4o, achieving state-of-the-art results in 3 out of 7 benchmarks, and significantly surpasses Command-R+ while using 10 times fewer parameters. It also excels at handling context, even when facts are altered or conflicting.
[Saleforce AI Research Blog](https://blog.salesforceairesearch.com/sfr-rag/)

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**Vanilla RAG 🌱**
====================================================================
RAG(Retrieval-Augmented Generation) works by finding documents related to the user's question, combining them with a prompt for a large language model (LLM), and then using the LLM to create more accurate and relevant answers.
Heres a simple guide to building a RAG pipeline from scratch:
1. **Data Loading**: Gather and load the documents you want to use for answering questions.
2. **Chunking and Embedding**: Split the documents into smaller chunks and convert them into numerical vectors (embeddings) that capture their meaning.
3. **Vector Store**: Create a LanceDB table to store and manage these vectors for quick access during retrieval.
4. **Retrieval & Prompt Preparation**: When a question is asked, find the most relevant document chunks from the table and prepare a prompt combining these chunks with the question.
5. **Answer Generation**: Send the prepared prompt to a LLM to generate a detailed and accurate answer.
<figure markdown="span">
![agent-based-rag](https://raw.githubusercontent.com/lancedb/assets/main/docs/assets/rag/rag_from_scratch.png)
<figcaption>Vanilla RAG
</figcaption>
</figure>
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/RAG-from-Scratch/RAG_from_Scratch.ipynb)
Heres a code snippet for defining a table with the [Embedding API](https://lancedb.github.io/lancedb/embeddings/embedding_functions/), which simplifies the process by handling embedding extraction and querying in one step.
```python
import pandas as pd
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 Docs(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("docs", schema=Docs)
# considering chunks are in list format
df = pd.DataFrame({'text':chunks})
table.add(data=df)
query = "What is issue date of lease?"
actual = table.search(query).limit(1).to_list()[0]
print(actual.text)
```
Check Colab for the complete code
[![Open In Colab](../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/RAG-from-Scratch/RAG_from_Scratch.ipynb)

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# AnswersDotAI Rerankers
This integration allows using answersdotai's rerankers to rerank the search results. [Rerankers](https://github.com/AnswerDotAI/rerankers)
A lightweight, low-dependency, unified API to use all common reranking and cross-encoder models.
!!! note
Supported Query Types: Hybrid, Vector, FTS
```python
import numpy
import lancedb
from lancedb.embeddings import get_registry
from lancedb.pydantic import LanceModel, Vector
from lancedb.rerankers import AnswerdotaiRerankers
embedder = get_registry().get("sentence-transformers").create()
db = lancedb.connect("~/.lancedb")
class Schema(LanceModel):
text: str = embedder.SourceField()
vector: Vector(embedder.ndims()) = embedder.VectorField()
data = [
{"text": "hello world"},
{"text": "goodbye world"}
]
tbl = db.create_table("test", schema=Schema, mode="overwrite")
tbl.add(data)
reranker = AnswerdotaiRerankers()
# Run vector search with a reranker
result = tbl.search("hello").rerank(reranker=reranker).to_list()
# Run FTS search with a reranker
result = tbl.search("hello", query_type="fts").rerank(reranker=reranker).to_list()
# Run hybrid search with a reranker
tbl.create_fts_index("text", replace=True)
result = tbl.search("hello", query_type="hybrid").rerank(reranker=reranker).to_list()
```
Accepted Arguments
----------------
| Argument | Type | Default | Description |
| --- | --- | --- | --- |
| `model_type` | `str` | `"colbert"` | The type of model to use. Supported model types can be found here - https://github.com/AnswerDotAI/rerankers |
| `model_name` | `str` | `"answerdotai/answerai-colbert-small-v1"` | The name of the reranker model to use. |
| `column` | `str` | `"text"` | The name of the column to use as input to the cross encoder model. |
| `return_score` | str | `"relevance"` | Options are "relevance" or "all". The type of score to return. If "relevance", will return only the `_relevance_score. If "all" is supported, will return relevance score along with the vector and/or fts scores depending on query type |
## Supported Scores for each query type
You can specify the type of scores you want the reranker to return. The following are the supported scores for each query type:
### Hybrid Search
|`return_score`| Status | Description |
| --- | --- | --- |
| `relevance` | ✅ Supported | Returns only have the `_relevance_score` column |
| `all` | ❌ Not Supported | Returns have vector(`_distance`) and FTS(`score`) along with Hybrid Search score(`_relevance_score`) |
### Vector Search
|`return_score`| Status | Description |
| --- | --- | --- |
| `relevance` | ✅ Supported | Returns only have the `_relevance_score` column |
| `all` | ✅ Supported | Returns have vector(`_distance`) along with Hybrid Search score(`_relevance_score`) |
### FTS Search
|`return_score`| Status | Description |
| --- | --- | --- |
| `relevance` | ✅ Supported | Returns only have the `_relevance_score` column |
| `all` | ✅ Supported | Returns have FTS(`score`) along with Hybrid Search score(`_relevance_score`) |

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@@ -45,6 +45,23 @@ tbl.create_fts_index("text")
result = tbl.query("hello", query_type="hybrid").rerank(reranker).to_list()
```
### Multi-vector reranking
Most rerankers support reranking based on multiple vectors. To rerank based on multiple vectors, you can pass a list of vectors to the `rerank` method. Here's an example of how to rerank based on multiple vector columns using the `CrossEncoderReranker`:
```python
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)
```
## Available Rerankers
LanceDB comes with some built-in rerankers. Here are some of the rerankers that are available in LanceDB:
@@ -54,6 +71,8 @@ LanceDB comes with some built-in rerankers. Here are some of the rerankers that
- [OpenAI Reranker](./openai.md)
- [Linear Combination Reranker](./linear_combination.md)
- [Jina Reranker](./jina.md)
- [AnswerDotAI Rerankers](./answerdotai.md)
- [Reciprocal Rank Fusion Reranker](./rrf.md)
## Creating Custom Rerankers

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@@ -1,6 +1,9 @@
# Linear Combination Reranker
This is the default re-ranker used by LanceDB hybrid search. 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.
!!! note
This is depricated. It is recommended to use the `RRFReranker` instead, if you want to use a score based reranker.
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.
!!! note
Supported Query Types: Hybrid

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@@ -1,6 +1,6 @@
# Reciprocal Rank Fusion Reranker
Reciprocal Rank Fusion (RRF) is an algorithm that evaluates the search scores by leveraging the positions/rank of the documents. The implementation follows this [paper](https://plg.uwaterloo.ca/~gvcormac/cormacksigir09-rrf.pdf).
This is the default re-ranker used by LanceDB hybrid search. Reciprocal Rank Fusion (RRF) is an algorithm that evaluates the search scores by leveraging the positions/rank of the documents. The implementation follows this [paper](https://plg.uwaterloo.ca/~gvcormac/cormacksigir09-rrf.pdf).
!!! note

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@@ -0,0 +1,4 @@
This is a list of benchmarks and reports we've worked on at LanceDB. Some of these are continuously updated, while others are one-off reports.
- [Improve retrievers with hybrid search and reranking](https://blog.lancedb.com/hybrid-search-and-reranking-report/)

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@@ -40,3 +40,45 @@
margin-top: -.1rem;
}
}
/* remove pilcrow as permanent link and add chain icon similar to github https://github.com/squidfunk/mkdocs-material/discussions/3535 */
.headerlink {
--permalink-size: 16px; /* for font-relative sizes, 0.6em is a good choice */
--permalink-spacing: 4px;
width: calc(var(--permalink-size) + var(--permalink-spacing));
height: var(--permalink-size);
vertical-align: middle;
background-color: var(--md-default-fg-color--lighter);
background-size: var(--permalink-size);
mask-size: var(--permalink-size);
-webkit-mask-size: var(--permalink-size);
mask-repeat: no-repeat;
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}
[id]:target .headerlink {
background-color: var(--md-typeset-a-color);
}
.headerlink:hover {
background-color: var(--md-accent-fg-color) !important;
}
@media screen and (min-width: 76.25em) {
h1, h2, h3, h4, h5, h6 {
display: flex;
align-items: center;
flex-direction: row;
column-gap: 0.2em; /* fixes spaces in titles */
}
.headerlink {
order: -1;
margin-left: calc(var(--permalink-size) * -1 - var(--permalink-spacing)) !important;
}
}

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@@ -0,0 +1,33 @@
## Getting help
The following sections provide various diagnostics and troubleshooting tips for LanceDB.
These can help you provide additional information when asking questions or making
error reports.
For trouble shooting, the best place to ask is in our Discord, under the relevant
language channel. By asking in the language-specific channel, it makes it more
likely that someone who knows the answer will see your question.
## Enabling logging
To provide more information, especially for LanceDB Cloud related issues, enable
debug logging. You can set the `LANCEDB_LOG` environment variable:
```shell
export LANCEDB_LOG=debug
```
You can turn off colors and formatting in the logs by setting
```shell
export LANCEDB_LOG_STYLE=never
```
## Explaining query plans
If you have slow queries or unexpected query results, it can be helpful to
print the resolved query plan. You can use the `explain_plan` method to do this:
* Python Sync: [LanceQueryBuilder.explain_plan][lancedb.query.LanceQueryBuilder.explain_plan]
* Python Async: [AsyncQueryBase.explain_plan][lancedb.query.AsyncQueryBase.explain_plan]
* Node @lancedb/lancedb: [LanceQueryBuilder.explainPlan](/lancedb/js/classes/QueryBase/#explainplan)

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@@ -19,6 +19,12 @@ excluded_globs = [
"../src/hybrid_search/hybrid_search.md",
"../src/reranking/*.md",
"../src/guides/tuning_retrievers/*.md",
"../src/embeddings/available_embedding_models/text_embedding_functions/*.md",
"../src/embeddings/available_embedding_models/multimodal_embedding_functions/*.md",
"../src/rag/*.md",
"../src/rag/advanced_techniques/*.md"
]
python_prefix = "py"

View File

@@ -3,7 +3,7 @@ numpy
pandas
pylance
duckdb
tantivy==0.20.1
--extra-index-url https://download.pytorch.org/whl/cpu
torch
polars>=0.19, <=1.3.0

View File

@@ -2,7 +2,7 @@
name = "lancedb-jni"
description = "JNI bindings for LanceDB"
# TODO modify lancedb/Cargo.toml for version and dependencies
version = "0.4.18"
version = "0.10.0"
edition.workspace = true
repository.workspace = true
readme.workspace = true

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