Wolfram Language & System 10.3 (2015)|Legacy Documentation

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gives a number representing the NeedlemanWunsch similarity between strings or vectors u and v.

Details and OptionsDetails and Options

  • NeedlemanWunschSimilarity[u,v] finds an optimal global alignment between the elements of u and v, and returns the number of one-element matches.
  • For strings, setting the option IgnoreCase->True makes NeedlemanWunschSimilarity treat lowercase and uppercase letters as equivalent.
  • With the default setting SimilarityRules->Automatic, each match between two characters contributes to the total similarity score, while each mismatch, insertion, or deletion contributes .
  • The option GapPenalty specifies an additional cost to be subtracted from the similarity score for any run of insertions or deletions.

ExamplesExamplesopen allclose all

Basic Examples  (2)Basic Examples  (2)

NeedlemanWunsch similarity between two strings:

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NeedlemanWunsch similarity between two vectors:

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Introduced in 2008