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Private or Common Criteria in a Multi-criteria Group Decision Support System: An Experiment Read chapter Read first chapter

2016 | OriginalPaper | Chapter

Hootle+: A Group Recommender System Supporting Preference Negotiation

Authors : Jesús Omar Álvarez Márquez, Jürgen Ziegler

Published in: Collaboration and Technology

Publisher: Springer International Publishing

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Abstract

This paper presents an approach to group recommender systems that focuses its attention on the group’s social interaction during the formulation, discussion and negotiation of the features the item to be jointly selected should possess. The system supports a collaborative preference elicitation and negotiation process where desired item features can be defined individually, but group consensus is needed for them to become active in the item filtering process. Users can provide feedback on other members’ preferences and change their significance, bringing up new recommendations each time individual settings are modified. The last stage in the decision process is also supported, when users collectively select the final item from the recommendation set. We developed the prototype hotel recommender Hootle+ and evaluated it in a user study involving groups of different size. The results indicate a good overall satisfaction, which increases with group size. However, the success ratio for bigger groups is lower than for small groups, raising questions for follow-up research.

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Metadata
Title
Hootle+: A Group Recommender System Supporting Preference Negotiation
Authors
Jesús Omar Álvarez Márquez
Jürgen Ziegler
Copyright Year
2016
Book
Collaboration and Technology

Print ISBN: 978-3-319-44798-8

Electronic ISBN: 978-3-319-44799-5

Copyright Year: 2016

DOI
https://doi.org/10.1007/978-3-319-44799-5_12

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