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    Pythonlangchain-coreexample_selectorssemantic_similarityMaxMarginalRelevanceExampleSelectorfrom_examples
    Method●Since v0.1

    from_examples

    Create k-shot example selector using example list and embeddings.

    Reshuffles examples dynamically based on Max Marginal Relevance.

    Copy
    from_examples(
      cls,
      examples: list[dict],
      embeddings: Embeddings,
      vectorstore_cls: type[VectorStore],
      k: int = 4,
      input_keys: list[str] | None = None,
      fetch_k: int = 20,
      example_keys: list[str] | None = None,
      vectorstore_kwargs: dict | None = None,
      **vectorstore_cls_kwargs: Any = {}
    ) -> MaxMarginalRelevanceExampleSelector

    Parameters

    NameTypeDescription
    examples*list[dict]

    List of examples to use in the prompt.

    embeddings*Embeddings

    An initialized embedding API interface, e.g. OpenAIEmbeddings().

    vectorstore_cls*type[VectorStore]

    A vector store DB interface class, e.g. FAISS.

    kint
    Default:4

    Number of examples to select.

    fetch_kint
    Default:20

    Number of Document objects to fetch to pass to MMR algorithm.

    input_keyslist[str] | None
    Default:None

    If provided, the search is based on the input variables instead of all variables.

    example_keyslist[str] | None
    Default:None

    If provided, keys to filter examples to.

    vectorstore_kwargsdict | None
    Default:None

    Extra arguments passed to similarity_search function of the VectorStore.

    vectorstore_cls_kwargsAny
    Default:{}

    optional kwargs containing url for vector store

    View source on GitHub