Trust no one: evaluating trust-based filtering for recommenders

  • Authors:
  • John O'Donovan;Barry Smyth

  • Affiliations:
  • Adaptive Information Cluster, Department of Computer Science, University College Dublin, Dublin 4, Ireland;Adaptive Information Cluster, Department of Computer Science, University College Dublin, Dublin 4, Ireland

  • Venue:
  • IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
  • Year:
  • 2005

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Abstract

To be successful recommender systems must gain the trust of users. To do this they must demonstrate their ability to make reliable predictions. We argue that collaborative filtering recommendation algorithms can benefit from explicit models of trust to inform their predictions. We present one such model of trust along with a cost-benefit analysis that focuses on the classical trade-off that exists between recommendation coverage and prediction accuracy.