Social network analysis applied to recommendation systems: alleviating the cold-user problem

Authors:
Eduardo Castillejo;Aitor Almeida;Diego López-de-Ipiña
Affiliations:
Deusto Institute of Technology - DeustoTech, University of Deusto, Bilbao, Spain;Deusto Institute of Technology - DeustoTech, University of Deusto, Bilbao, Spain;Deusto Institute of Technology - DeustoTech, University of Deusto, Bilbao, Spain
Venue:
UCAmI'12 Proceedings of the 6th international conference on Ubiquitous Computing and Ambient Intelligence
Year:
2012

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Abstract

Recommender systems have increased their impact in the Internet due to the unmanageable amount of items that users can find in the Web. This way, many algorithms have emerged filtering those items which best fit into users' tastes. Nevertheless, these systems suffer from the same shortcoming: the lack of new user data to recommend any item based on their tastes. Social relationships gathered from social networks and intelligent environments become a challenging opportunity to retrieve data from users based on their relationships, and social network analysis provides the demanded techniques to accomplish this objective. In this paper we present a methodology which uses users' social network data to generate first recommendations, alleviating the cold-user limitation. Besides, we demonstrate that it is possible to reduce the cold-user problem applying our solution to a recommendation system environment.