Managing uncertainty in group recommending processes

  • Authors:
  • Luis M. Campos;Juan M. Fernández-Luna;Juan F. Huete;Miguel A. Rueda-Morales

  • Affiliations:
  • Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain 18071;Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain 18071;Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain 18071;Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain 18071

  • Venue:
  • User Modeling and User-Adapted Interaction
  • Year:
  • 2009

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Abstract

While the problem of building recommender systems has attracted considerableattention in recent years, most recommender systems are designed for recommendingitems to individuals. The aim of this paper is to automatically recommenda ranked list of new items to a group of users. We will investigate the value of usingBayesian networks to represent the different uncertainties involved in a group recommendingprocess, i.e. those uncertainties related to mechanisms that govern theinteractions between group members and the processes leading to the final choice orrecommendation. We will also show how the most common aggregation strategiesmight be encoded using a Bayesian network formalism. The proposed model can beconsidered as a collaborative Bayesian network-based group recommender system,where group ratings are computed from the past voting patterns of other users withsimilar tastes.