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# `langchain_community.example_selectors.ngram_overlap`.ngram_overlap_score

langchain_community.example_selectors.ngram_overlap.ngram_overlap_score(source: List[str], example: List[str]) → float

  Compute ngram overlap score of source and example as sentence_bleu score from NLTK package.

  Use sentence_bleu with method1 smoothing function and auto reweighting. Return float value between 0.0 and 1.0 inclusive. https://www.nltk.org/_modules/nltk/translate/bleu_score.html https://aclanthology.org/P02-1040.pdf

  Parameters

    - source (List[str]) –

    - example (List[str]) –

  Return type

    float