Patrick Tufts

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Patrick Tufts is a computer scientist and inventor. He created Alexa Internet's collaborative filter for creating related web site recommendations[1][2] and later, one of's most successful product recommendation systems.


  1. ^ US Patent 6691163. Use of web usage trail data to identify related links. Patrick Tufts. Assigned to Alexa Internet.
  2. ^ US Patent 7159023.

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