_cosine_relevance_score_fn() — langchain Function Reference

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

Function python DataProcessing VectorStores

Entity Profile

DataProcessing→ VectorStores→ _cosine_relevance_score_fn() — langchain Function Reference

Dependency Diagram

graph TD
  3fb159c2_e906_d392_5cda_ece97fb87771["_cosine_relevance_score_fn()"]
  6c336ac6_f55c_1ad7_6db3_73dbd71fb625["VectorStore"]
  3fb159c2_e906_d392_5cda_ece97fb87771 -->|defined in| 6c336ac6_f55c_1ad7_6db3_73dbd71fb625
  style 3fb159c2_e906_d392_5cda_ece97fb87771 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/vectorstores/base.py lines 391–393

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