Spatial processes for recommender systems

  • Authors:
  • Fabian Bohnert;Daniel F. Schmidt;Ingrid Zukerman

  • Affiliations:
  • Faculty of Information Technology, Monash University, Clayton, VIC, Australia;Faculty of Information Technology, Monash University, Clayton, VIC, Australia;Faculty of Information Technology, Monash University, Clayton, VIC, Australia

  • Venue:
  • IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
  • Year:
  • 2009

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Abstract

Spatial processes are typically used to analyse and predict geographic data. This paper adapts such models to predicting a user's interests (i. e., implicit item ratings) within a recommender system in the museum domain. We present the theoretical framework for a model based on Gaussian spatial processes, and discuss efficient algorithms for parameter estimation. Our model was evaluated with a real-world dataset collected by tracking visitors in a museum, attaining a higher predictive accuracy than state-of-the-art collaborative filters.