Computer-implemented processes are disclosed for clustering items and improving the utility of item recommendations. One process involves applying a clustering algorithm to a user's collection of items. Information about the resulting clusters is then used to select items to use as recommendation sources....http://www.google.es/patents/US7966225?utm_source=gb-gplus-sharePatente US7966225 - Method, system, and medium for cluster-based categorization and presentation of item recommendations
Method, system, and medium for cluster-based categorization and presentation ...