Lei XuandClaude Sonnet 5.5 bedb6ab3b1 docs(python): rework PyTorch page around StreamingDataset (#4606)
## Summary
- Rework `docs/web/training/torch.mdx` for people who already know the
PyTorch `DataLoader`, built around `lancedb.streaming.StreamingDataset`.
- The quickstart trains a state-to-action policy on the real
`lance-format/lerobot-xvla-soft-fold` dataset loaded via `hf://`, using
a zero-copy Arrow-to-tensor transform.
- Add a short table mapping PyTorch idioms (`IterableDataset`,
`DistributedSampler`, `collate_fn`, `random_split`,
`StatefulDataLoader`) to their LanceDB equivalents.
- Add an Optimizations section: Transform (including an `ExtractFrames`
example using blob v2 and torchcodec), Distributed Training, and the
existing Output Formats content moved underneath.

## Notes
- The quickstart depends on #4602 (permutation building over tables with
schema metadata), which is merged.
- `ExtractFrames` takes a URI and opens the table lazily because a local
`LanceTable` cannot yet be pickled into DataLoader workers.
- The Permutation-based "Selecting columns" and "Using multiple
DataLoader workers" sections further down are unchanged from main.

## Test plan
- [x] Ran the quickstart, transform, `ExtractFrames` (main process and
forkserver workers) and distributed snippets locally.
- [x] Rendered the page with `mint dev` and checked for console errors.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-20 21:47:11 -07:00
2023-03-17 18:15:19 -07:00
2025-03-10 09:01:23 -07:00

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LanceDB

The Multimodal Lakehouse for AI

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The ultimate multimodal data platform for AI/ML applications.

LanceDB is designed for fast, scalable, and production-ready vector search. It is built on top of the Lance columnar format. You can store, index, and search over petabytes of multimodal data and vectors with ease. LanceDB is a central location where developers can build, train and analyze their AI workloads.


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