Effective way to calculate a similarity percentage between data sets

Posted by UltraVi01 on Stack Overflow See other posts from Stack Overflow or by UltraVi01
Published on 2010-04-24T23:09:01Z Indexed on 2010/04/24 23:13 UTC
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I am currently working with User objects -- each of which have many Goal objects. The Goal objects are not User specific, that is, Users can share the same Goal. I am attempting to fashion a way to calculate a "similarity percentage" between two Users... (i.e., taking into account how many Goals they share as well as how many Goals they do not share) Does anyone have experience with this type of situation? I am using Grails with Mysql if that is helpful.

Thanks

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