select_examples() — langchain Function Reference

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

Function python PromptManagement ExampleSelection calls 3 called by 1

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PromptManagement→ ExampleSelection→ select_examples() — langchain Function Reference

Dependency Diagram

graph TD
  d0986091_5176_ba9e_5c95_9bb7ca3162b9["select_examples()"]
  58a1328b_1470_20ec_61bd_ea7fb1fc8fa0["SemanticSimilarityExampleSelector"]
  d0986091_5176_ba9e_5c95_9bb7ca3162b9 -->|defined in| 58a1328b_1470_20ec_61bd_ea7fb1fc8fa0
  c03a4bd4_52ff_4d67_9b7b_92504d0181fb["select_examples()"]
  c03a4bd4_52ff_4d67_9b7b_92504d0181fb -->|calls| d0986091_5176_ba9e_5c95_9bb7ca3162b9
  06f73539_fe12_1c9c_b0b0_60530c6bf341["_example_to_text()"]
  d0986091_5176_ba9e_5c95_9bb7ca3162b9 -->|calls| 06f73539_fe12_1c9c_b0b0_60530c6bf341
  27e09fc4_bf9b_d1a5_5626_387af543d2c7["_documents_to_examples()"]
  d0986091_5176_ba9e_5c95_9bb7ca3162b9 -->|calls| 27e09fc4_bf9b_d1a5_5626_387af543d2c7
  c03a4bd4_52ff_4d67_9b7b_92504d0181fb["select_examples()"]
  d0986091_5176_ba9e_5c95_9bb7ca3162b9 -->|calls| c03a4bd4_52ff_4d67_9b7b_92504d0181fb
  style d0986091_5176_ba9e_5c95_9bb7ca3162b9 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/example_selectors/semantic_similarity.py lines 100–116

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

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

        Returns:
            The selected examples.
        """
        # Get the docs with the highest similarity.
        vectorstore_kwargs = self.vectorstore_kwargs or {}
        example_docs = self.vectorstore.similarity_search(
            self._example_to_text(input_variables, self.input_keys),
            k=self.k,
            **vectorstore_kwargs,
        )
        return self._documents_to_examples(example_docs)