I am trying to compare 2 paragraphs of strings the output of which has to be the percentage of similarity.
I have tried doing this using the diff method and some Natural Language Processing tools
Is there a better way of doing this in ruby?
You may want to try the Levenshtein string distance algorithm for this. http://rubygems.org/gems/text has an implementation of this along with other helpful string comparison utils.
Paul Whelan
See my similar Question here what I needed but did not know what it was called was a Levenshtein distance algorithm
来源：https://stackoverflow.com/questions/4761793/how-to-do-advanced-string-comparison-in-ruby