Group recommendation using feature space representing behavioral tendency and power balance among members

Authors:
Shunichi Seko;Takashi Yagi;Manabu Motegi;Shinyo Muto
Affiliations:
NTT Cyber Solutions Laboratories, Yokosuka-Shi, Kanagawa, Japan;NTT Cyber Solutions Laboratories, Yokosuka-Shi, Kanagawa, Japan;NTT Cyber Solutions Laboratories, Yokosuka-Shi, Kanagawa, Japan;NTT Cyber Solutions Laboratories, Yokosuka-Shi, Kanagawa, Japan
Venue:
Proceedings of the fifth ACM conference on Recommender systems
Year:
2011

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Abstract

This paper proposes an algorithm to estimate appropriate or novel content for groups of people who know each other such as friends, couples, and families. To achieve high recommendation accuracy, we focus on "Groupality", the entity or entities that characterize groups such as the tendency of content selection and the relationships among group members. Our algorithm calculates recommendation scores using a feature space that consists of the behavioral tendency of a group and the power balance among group members based on individual preference and the behavioral history of group. After gathering the behavioral history of subject groups when watching TV, we verify that our proposed algorithm can recommend appropriate content, and find novel content. Evaluations show that our proposal achieves higher performance than existing methods.