Patent ID: 8195673

Claim:
A method of matching one or more pairs of persons out of four or more persons, the method comprising: a. receiving from the four or more persons three or more personal opinions, each personal opinion being an opinion of a certain person on another person of said four or more persons, such that at least one personal opinion of a first person on a second person being absent; b. based on at least a collaborative filtering algorithm, calculating from the personal opinions at least a first estimated opinion of a first person on a second person, said collaborative filtering algorithm being a method of estimating an estimated opinion of a specific person on a certain object based on; (i) a first group of opinions comprising opinions of said specific person on objects other than said certain object; and (ii) a second group of opinions comprising opinions of persons other than said specific person on said certain object and some of the objects other than said certain object; and c. matching said first person and said second person in accordance with the estimated opinion of said first person on said second person and a personal opinion or an estimated opinion of said second person on said first person.