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]#

Calculate maximal marginal relevance.

Parameters:

  • query_embedding (ndarray)

  • embedding_list (list)

  • lambda_mult (float)

  • k (int)

Return type:

List[int]