D. Kim, C. Park, J. Oh, S. Lee, and H. Yu. Proceedings of the 10th ACM Conference on Recommender Systems, page 233--240. New York, NY, USA, ACM, (2016)
Z. Yu, Y. Nakamura, S. Jang, S. Kajita, and K. Mase. Ubiquitous Intelligence and Computing, volume 4611 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2007)
S. Dornbush, A. Joshi, Z. Segall, and T. Oates. Proceeding of the 2007 conference on Advances in Ambient Intelligence, page 107--122. Amsterdam, The Netherlands, The Netherlands, IOS Press, (2007)
S. Stober, and A. Nürnberger. Knowledge-Based Intelligent Information and Engineering Systems (KES 2006), volume 4251 of LNAI, page 763--770. Berlin / Heidelberg, Springer Verlag, (October 2006)