IMP: A message-passing algorithm for matrix completion


Conference Paper

A new message-passing (MP) method is considered for the matrix completion problem associated with recommender systems. We attack the problem using a (generative) factor graph model that is related to a probabilistic low-rank matrix factorization. Based on the model, we propose a new algorithm, termed IMP, for the recovery of a data matrix from incomplete observations. The algorithm is based on a clustering followed by inference via MP (IMP). The algorithm is compared with a number of other matrix completion algorithms on real collaborative filtering (e.g., Netflix) data matrices. Our results show that, while many methods perform similarly with a large number of revealed entries, the IMP algorithm outperforms all others when the fraction of observed entries is small. This is helpful because it reduces the well-known cold-start problem associated with collaborative filtering (CF) systems in practice. © 2010 IEEE.

Full Text

Duke Authors

Cited Authors

  • Kim, BH; Yedla, A; Pfister, HD

Published Date

  • November 29, 2010

Published In

  • 6th International Symposium on Turbo Codes and Iterative Information Processing, Istc 2010

Start / End Page

  • 462 - 466

International Standard Book Number 13 (ISBN-13)

  • 9781424467457

Digital Object Identifier (DOI)

  • 10.1109/ISTC.2010.5613803

Citation Source

  • Scopus