A METHOD AND APPARATUS FOR LEARNING USER PREFERENCE WITH PRESERVATION OF PRIVACY

摘要

A method for learning user preference with preservation of privacy may comprise: collecting, with a granularity at a group level, feedback information of one or more users, wherein the feedback information of an associated user among the one or more users is related to at least one group of items offered to the associated user; learning group rating data of the one or more users from the feedback information of the one or more users, wherein the group rating data of the associated user indicates a rating of the associated user on the at least one group; and estimating item rating data of the one or more users based at least in part on the group rating data of the one or more users, wherein the item rating data of the associated user indicates preferences of the associated user on individual items comprising at least the items in the at least one group.