Harnessing the power of "favorites" lists for recommendation systems

  • Authors:
  • Maryam Khezrzadeh;Alex Thomo;William W. Wadge

  • Affiliations:
  • University of Victoria, Victoria, BC, Canada;University of Victoria, Victoria, BC, Canada;University of Victoria, Victoria, BC, Canada

  • Venue:
  • Proceedings of the third ACM conference on Recommender systems
  • Year:
  • 2009

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Abstract

We propose a novel collaborative recommendation approach to take advantage of the information available in user-created lists. Our approach assumes associations among any two items appearing in a list together. We calculate sum of Bayesian ratings (SBR) of all lists containing an item pair as the strength of item-item associations in that pair. SBR takes into consideration not only the number of lists the items have co-appeared in, but also the quality of the lists. We collected a data set of user ratings for books along with Listmania lists on Amazon.com using Amazon Web Services (AWS). Our method shows superior performance to existing user-based and item-based collaborative filtering approaches according to the resulted MAE, coverage and F-measure.