Competitive recommendation systems

  • Authors:
  • Petros Drineas;Iordanis Kerenidis;Prabhakar Raghavan

  • Affiliations:
  • Yale University;University of California, Berkeley;Verity, Inc., Sunnyvale, CA

  • Venue:
  • STOC '02 Proceedings of the thiry-fourth annual ACM symposium on Theory of computing
  • Year:
  • 2002

Quantified Score

Hi-index 0.00

Visualization

Abstract

A recommendation system tracks past purchases of a group of users to make product recommendations to individual members of the group. In this paper we present a notion of competitive recommendation systems, building on recent theoretical work on this subject. We reduce the problem of achieving competitiveness to a problem in matrix reconstruction. We then present a matrix reconstruction scheme that is competitive: it requires a small overhead in the number of users and products to be sampled, delivering in the process a net utility that closely approximates the best possible with full knowledge of all user-product preferences.