Exploration / exploitation trade-off in mobile context-aware recommender systems

  • Authors:
  • Djallel Bouneffouf;Amel Bouzeghoub;Alda Lopes Gançarski

  • Affiliations:
  • Department of Computer Science, Télécom SudParis, UMR CNRS Samovar, Evry Cedex, France;Department of Computer Science, Télécom SudParis, UMR CNRS Samovar, Evry Cedex, France;Department of Computer Science, Télécom SudParis, UMR CNRS Samovar, Evry Cedex, France

  • Venue:
  • AI'12 Proceedings of the 25th Australasian joint conference on Advances in Artificial Intelligence
  • Year:
  • 2012

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Abstract

The contextual bandit problem has been studied in the recommender system community, but without paying much attention to the contextual aspect of the recommendation. We introduce in this paper an algorithm that tackles this problem by modeling the Mobile Context-Aware Recommender Systems (MCRS) as a contextual bandit algorithm and it is based on dynamic exploration/exploitation. Within a deliberately designed offline simulation framework, we conduct extensive evaluations with real online event log data. The experimental results and detailed analysis demonstrate that our algorithm outperforms surveyed algorithms.