Human-Computer Interaction

INTERACT 2015: Human-Computer Interaction – INTERACT 2015 pp 20-37

Preference Elicitation and Negotiation in a Group Recommender System

Conference paper

DOI: 10.1007/978-3-319-22668-2_2

Volume 9297 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Álvarez Márquez J.O., Ziegler J. (2015) Preference Elicitation and Negotiation in a Group Recommender System. In: Abascal J., Barbosa S., Fetter M., Gross T., Palanque P., Winckler M. (eds) Human-Computer Interaction – INTERACT 2015. INTERACT 2015. Lecture Notes in Computer Science, vol 9297. Springer, Cham

Abstract

We present a novel approach to group recommender systems that better takes into account the social interaction in a group when formulating, discussing and negotiating the features of the item to be jointly selected. Our approach provides discussion support in a collaborative preference elicitation and negotiation process. Individual preferences are continuously aggregated and immediate feedback of the resulting recommendations is provided. We also support the last stage in the decision process when users collectively select the final item from the recommendation set. The prototype hotel recommender Hootle is developed following these concepts and tested in a user study. The results indicate a higher overall satisfaction with the system as well as a higher perceived recommendation quality when compared against a system version where no negotiation was possible. However, they also indicate that the negotiation-based approach may be more suitable for smaller groups, an aspect that will require further research.

Keywords

Group recommender system Group preference elicitation Negotiation Decision making 

Copyright information

© IFIP International Federation for Information Processing 2015

Authors and Affiliations

  • Jesús Omar Álvarez Márquez
    • 1
  • Jürgen Ziegler
    • 1
  1. 1.University of Duisburg-EssenDuisburgGermany