During a lunchtime conversation the other day, a coworker mentioned that he was hacking in his spare time on an entry for the Netflix Prize. This got me to thinking about collaborative filtering: why had I never seen a good description of how to do it? I suspect that people who might ordinarily have a casual interest in the subject hear that there are some statistics involved, whereupon they immed
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Implementing a Rating-Based Item-to-Item Recommender System in PHP/SQL Abstract User personalization and profiling is key to many succesful Web sites. Consider that there is considerable free content on the Web, but comparatively few tools to help us organize or mine such content for specific purposes. One solution is to ask users to rate resources so that they can help each other find better con
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