langchain_community.vectorstores.utils.maximal_marginal_relevance¶

langchain_community.vectorstores.utils.maximal_marginal_relevance(query_embedding: ndarray, embedding_list: list, lambda_mult: float = 0.5, k: int = 4) → List[int][source]¶

计算最大边际相关性。

Parameters

  • query_embedding (ndarray) –

  • embedding_list (list) –

  • lambda_mult (float) –

  • k (int) –

Return type

List[int]