×

System and method for bootstrapping a collaborative filtering system

  • US 6,389,372 B1
  • Filed: 06/29/1999
  • Issued: 05/14/2002
  • Est. Priority Date: 06/29/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of predicting a user'"'"'s rating for an item in a collaborative filtering system, comprising:

  • providing a correlation coefficient for each pair of users in the system, wherein the correlation coefficient is a measure of the similarity in ratings between pairs of users who have rated a particular item;

    determining ratings for items rated by other users in the system;

    calculating the weighted average of all the ratings for the item, wherein the weighted average is the sum of the product of a rating and its respective correlation coefficient divided by the sum of the correlation coefficients to provide a predicted user rating;

    wherein the plurality of users are members of a predetermined organization; and

    wherein the correlation coefficient for each user in the system comprises a predetermined organizational relationship among the users.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×