The evaluation of a hybrid critiquing system with preference-based recommendations organization

  • Authors:
  • Li Chen;Pearl Pu

  • Affiliations:
  • Swiss Federal Institute of Technology in Lausanne (EPFL), Lausanne, Switzerland;Swiss Federal Institute of Technology in Lausanne (EPFL), Lausanne, Switzerland

  • Venue:
  • Proceedings of the 2007 ACM conference on Recommender systems
  • Year:
  • 2007

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Abstract

The critiquing-based recommender system mainly aims to guide users to make an accurate and confident decision, while requiring them to consume a low level of effort. We have previously found that the hybrid critiquing system of combining the strengths from both system-proposed critiques and user self-motivated critiquing facility can highly improve users' subjective perceptions such as their decision confidence and trusting intentions. In this paper, we continue to investigate how to further reduce users' objective decision effort (e.g. time consumption) in such system by increasing the critique prediction accuracy of the system-proposed critiques. By means of real user evaluation, we proved that a new hybrid critiquing system design that integrates the preference-based recommendations organization technique for critiques suggestion can effectively help to increase the proposed critiques' application frequency and significantly contribute to saving users' task time and interaction effort.