Evaluating collaborative filtering recommender systems.

Jonathan L. Herlocker Joseph A. Konstan Loren G. Terveen John Riedl Evaluating collaborative filtering recommender systems. 5-53 2004 22 ACM Trans. Inf. Syst. 1 http://doi.acm.org/10.1145/963770.963772 db/journals/tois/tois22.html#HerlockerKTR04