Patent ID: 7403910

Claim:
A computer-implemented method for estimating how a user would rate a movie that the user has not yet rated, the method comprising: in a computer system identifying a set of common movies that have been rated favorably by the user and that have ratings that satisfy a minimum rating threshold; in the computer system identifying one or more other users that have rated the set of common movies and given ratings for the set of common movies that are substantially similar to ratings given by the user for the set of common movies; and in the computer system estimating how the user would rate the movie that the user has not yet rated by determining a similarity between the set of common movies and the movie that the user has not yet rated, wherein determining the similarity between the set of common movies and the movie that the user has not yet rated includes comparing the ratings given by the one or more other users for the set of common movies to ratings given by the one or more other users for the movie that the user has not yet rated.