select_examples() — langchain Function Reference

Architecture documentation for the select_examples() function in semantic_similarity.py from the langchain codebase.

Function python LangChainCore ApiManagement calls 3 called by 1

Entity Profile

LangChainCore→ ApiManagement→ select_examples() — langchain Function Reference

Dependency Diagram

graph TD
  63f2a0f4_1c6b_3f52_93fa_03d1d30c19df["select_examples()"]
  67ba8b66_097f_0cce_e1c7_525373834e2e["MaxMarginalRelevanceExampleSelector"]
  63f2a0f4_1c6b_3f52_93fa_03d1d30c19df -->|defined in| 67ba8b66_097f_0cce_e1c7_525373834e2e
  9767bb0f_858e_6874_7478_04bf403d9f60["select_examples()"]
  9767bb0f_858e_6874_7478_04bf403d9f60 -->|calls| 63f2a0f4_1c6b_3f52_93fa_03d1d30c19df
  5599ebbf_7d2d_cb9f_f035_4928a6716083["_example_to_text()"]
  63f2a0f4_1c6b_3f52_93fa_03d1d30c19df -->|calls| 5599ebbf_7d2d_cb9f_f035_4928a6716083
  ca5502d6_dd1c_4e4a_b805_746233968a5b["_documents_to_examples()"]
  63f2a0f4_1c6b_3f52_93fa_03d1d30c19df -->|calls| ca5502d6_dd1c_4e4a_b805_746233968a5b
  9767bb0f_858e_6874_7478_04bf403d9f60["select_examples()"]
  63f2a0f4_1c6b_3f52_93fa_03d1d30c19df -->|calls| 9767bb0f_858e_6874_7478_04bf403d9f60
  style 63f2a0f4_1c6b_3f52_93fa_03d1d30c19df fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/example_selectors/semantic_similarity.py lines 235–249

    def select_examples(self, input_variables: dict[str, str]) -> list[dict]:
        """Select examples based on Max Marginal Relevance.

        Args:
            input_variables: The input variables to use for search.

        Returns:
            The selected examples.
        """
        example_docs = self.vectorstore.max_marginal_relevance_search(
            self._example_to_text(input_variables, self.input_keys),
            k=self.k,
            fetch_k=self.fetch_k,
        )
        return self._documents_to_examples(example_docs)