_cosine_relevance_score_fn() — langchain Function Reference

Architecture documentation for the _cosine_relevance_score_fn() function in qdrant.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

LangChainCore→ MessageInterface→ _cosine_relevance_score_fn() — langchain Function Reference

Dependency Diagram

graph TD
  9c21d80c_b536_7a74_38c4_047674e5a5fd["_cosine_relevance_score_fn()"]
  671b47a0_cdd3_a89d_e90f_0631a4bd67d3["QdrantVectorStore"]
  9c21d80c_b536_7a74_38c4_047674e5a5fd -->|defined in| 671b47a0_cdd3_a89d_e90f_0631a4bd67d3
  style 9c21d80c_b536_7a74_38c4_047674e5a5fd fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/qdrant/langchain_qdrant/qdrant.py lines 1000–1002

    def _cosine_relevance_score_fn(distance: float) -> float:
        """Normalize the distance to a score on a scale `[0, 1]`."""
        return (distance + 1.0) / 2.0