Tensor reduction for user profiling in personalized recommender systems

Tang, Xiaoyu, Xu, Yue, & Shlomo, Geva (2014) Tensor reduction for user profiling in personalized recommender systems. In Proceedings of the 2014 Australasian Document Computing Symposium, ACM, Melbourne, VIC, p. 34.

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User profiling is the process of constructing user models which represent personal characteristics and preferences of customers. User profiles play a central role in many recommender systems. Recommender systems recommend items to users based on user profiles, in which the items can be any objects which the users are interested in, such as documents, web pages, books, movies, etc. In recent years, multidimensional data are getting more and more attention for creating better recommender systems from both academia and industry. Additional metadata provides algorithms with more details for better understanding the interactions between users and items. However, most of the existing user/item profiling techniques for multidimensional data analyze data through splitting the multidimensional relations, which causes information loss of the multidimensionality. In this paper, we propose a user profiling approach using a tensor reduction algorithm, which we will show is based on a Tucker2 model. The proposed profiling approach incorporates latent interactions between all dimensions into user profiles, which significantly benefits the quality of neighborhood formation. We further propose to integrate the profiling approach into neighborhoodbased collaborative filtering recommender algorithms. Experimental results show significant improvements in terms of recommendation accuracy.

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ID Code: 81789
Item Type: Conference Paper
Refereed: Yes
DOI: 10.1145/2682862.2682883
ISBN: 9781450330008
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 13 Feb 2015 00:11
Last Modified: 15 Feb 2015 22:18

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