- Descirbed at http://www.ir.iit.edu/~abdur/Research/Duplicate.html
An implementation of the IMatch algorithm as described at http://www.ir.iit.edu/~abdur/Research/Duplicate.html
- Stemming via the 'stemmer' gem and :stemming option
- Stop words via the :stop_words option
- Built-in English lexicon
- None, yet.
- Stemmer gem (Porter Stemmer implementation)
gem install imatch
# Default settings (English lexicon, no stemming, no stop words) imatch = IMatch.new imatch.signature('your string here') # => Returns a string with the hex SHA1 signature # Add stop words imatch = IMatch.new(IMatch::DEFAULT_LEXICON_FILE, :stop_words => ['a']) imatch.signature("foo") # same result. imatch.signature("a foo") # Turn on stemming imatch = IMatch.new(IMatch::DEFAULT_LEXICON_FILE, :stemming => true) imatch.signature("follower") # same result. imatch.signature("followers")
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