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Example with trigrams

  • Suppose the text is november

    • Trigrams are nov, ove, vem, emb, mbe, ber.

  • The query is december

    • Trigrams are  dec, ece, cem, emb, mbe, ber.

  • So 3 trigrams overlap (of 6 in each term)

  • How can we turn this into a normalized measure of overlap?


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