AmphetaRate
AmphetaRate is an open source RSS recommendation server. Users sign up and get a URL for a personalized RSS feed. The articles in that feed are aggregated from other feeds. Users can rate these articles so that AmphetaRate learns their taste. It uses Bayesian statistics and a collaborative filtering algorithm called ACF-Nearest-Neighbor to find other articles that they may like. Articles whose ratings have extra impact on the algorithms are marked with "".
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