6Tunkelang D. Recommendations as a conversation with the user [C] //Proc of the 5th ACM Conf on Recommender Systems. New York: ACM, 2011: 11-12.
7Breese J, Heckerman D, Kadie C. Empirical analysis of predictive algorithms for collaborative filtering [C] //Proc of the 14th Conf on Uncertainty in Artificial "Intelligence. San Francisco: Morgan Kaufmann, 1998: 43-52.
8Adomavicius G, Tuzhilin A. Toward the next generation of recommender systems: A survey of the state-of-the-art and possible extensions [J]. IEEE Trans on Knowledge and Data Engineering, 2005, 17(6): 734-749.
9Manzato M. Goularte R. A multimedia recommender system based on enriched user profiles [C] //Proc of the 27th Annual ACM Symp on Applied Computing. New York: ACM. 2012: 975-980.
10Mell P. Grance T. The NIST definition of cloud computing. SP800-145 [R]. Gaithersburg: National Institute of Standards and Technology. 2011.