icanwin,
I have not read your implementation at all. If you can use another module to calculate similarity, Text::Levenshtein has a 'fastdistance' method (pure perl) and there is also Text::LevenshteinXS which uses C for speed.

Update: As for your implementation, if you need to compare every string against every other string - the best you can hope for is N * N / 2 comparisons. On the other hand, you may be able to reduce this depending on your requirements.

For instance, if you are interested in strings with an edit distance of less than 5, there is no need to compare strings who have a length difference of 5 or greater. To know the best way to reduce your comparisons, we will need to know more information about your input data and desired output (requirements).

Cheers - L~R

In reply to Re: Fast string similarity method by Limbic~Region
in thread Fast string similarity method by icanwin

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