max_marginal_relevance_search() — langchain Function Reference

Architecture documentation for the max_marginal_relevance_search() function in test_similarity.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

LangChainCore→ MessageInterface→ max_marginal_relevance_search() — langchain Function Reference

Dependency Diagram

graph TD
  0f64a7f0_7bec_0ab6_59b2_2c7d67d0e7b1["max_marginal_relevance_search()"]
  2b1e88c6_438d_574a_4554_475753fefd62["DummyVectorStore"]
  0f64a7f0_7bec_0ab6_59b2_2c7d67d0e7b1 -->|defined in| 2b1e88c6_438d_574a_4554_475753fefd62
  style 0f64a7f0_7bec_0ab6_59b2_2c7d67d0e7b1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/example_selectors/test_similarity.py lines 49–62

    def max_marginal_relevance_search(
        self,
        query: str,
        k: int = 4,
        fetch_k: int = 20,
        lambda_mult: float = 0.5,
        **kwargs: Any,
    ) -> list[Document]:
        return [
            Document(
                page_content=query,
                metadata={"query": query, "k": k, "fetch_k": fetch_k, "other": "other"},
            )
        ] * k