レコメンダシステム
↑ Parsons, J.; Ralph, P.; Gallagher, K. (July 2004), Using viewing time to infer user preference in recommender systems., AAAI Workshop in Semantic Web Personalization, San Jose, California .
↑ Adomavicius, G.; Tuzhilin, A. (June 2005), “Toward the Next Generation of Recommender Systems: A Survey of the State-of-the-Art and Possible Extensions”, IEEE Transactions on Knowledge and Data Engineering 17 (6): 734–749, doi:10.1109/TKDE.2005.99, http://portal.acm.org/citation.cfm?id=1070611.1070751 .
↑ Herlocker, J.