Affiliations: Faculty of Computer Science and Management, Wroclaw University of Science and Technology, Poland
Correspondence:
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Corresponding author. Bernadetta Maleszka, Faculty of Computer Science and Management, Wroclaw University of Science and Technology, Poland. E-mail: Bernadetta.Maleszka@pwr.edu.pl.
Abstract: Traditional approaches to content-based recommendation and collaborative filtering do not suffer from cold-start problem, which is a challenge to recommend items for an unknown user. In this paper we present a Personalized Document Retrieval System which takes into account a social network information about the users. The overall idea of the system is to cluster users into groups of similar interests based on theirs usage data and to determine a representative profile for each of the groups. When a new user joins the system, he or she is classified into one of existing group based on his or her user data and the representative profile of the group becomes a starting profile for the new user. This paper focuses on a method for updating ontology-based user profile using Bayesian network approach. We analyze some properties of proposed updating method and describe an idea of experimental evaluations.
Keywords: Recommendation system, cold-start problem, user profile, social networks, collaborative filtering, Bayesian network
