- Knowledge Processing and Data Analysis, volume 6581 of Lecture Notes in Computer Science, page 136--149. Berlin/Heidelberg, Springer, (2011)
- Proceedings of the third ACM conference on Recommender systems, page 61--68. New York, NY, USA, ACM, (2009)
- Journal of Emerging Technologies in Web Intelligence 3(2):168--176 (2011)
- Proceedings of the 12th International Conference on Information Integration and Web-based Applications \&\#38; Services, page 909--912. New York, NY, USA, ACM, (2010)
- Proceeding of the 17th ACM conference on Information and knowledge management, page 1429--1430. New York, NY, USA, ACM, (2008)
- Workshop on Knowledge Discovery, Data Mining, and Machine Learning, page 44 --51. (September 2009)
- Proceedings of the 25th Conference on Uncertainty in Artificial Intelligence, (2009)
- ACM Transactions on Information Systems 22(1):5--53 (2004)
- RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems, page 43--50. New York, NY, USA, ACM, (2008)


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