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20 lines
514 B
Text
20 lines
514 B
Text
---
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title: bm25
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sidebarTitle: bm25
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---
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# `fastmcp.server.transforms.search.bm25`
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BM25-based search transform.
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## Classes
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### `BM25SearchTransform` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/server/transforms/search/bm25.py#L89" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Search transform using BM25 Okapi relevance ranking.
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Maintains an in-memory index that is lazily rebuilt when the tool
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catalog's searchable text changes.
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