A method and a system for modeling user preferences in a high-dimensional data space (106) wherein data entities are presented as vectors the elements of which are characteristic features thereof, the data entities being clustered into a number of categories, and a set of latent vectors (110, 114) specifying...http://www.google.de/patents/US20040254957?utm_source=gb-gplus-sharePatent US20040254957 - Method and a system for modeling user preferences