4SARWAR B,KARYPIS G,KONSTAN J et al. Item-Based collaborative filtering recommendation algorithms. In: Proceedings of the 10th International World Wide Web Conference,2001:285-295.
5BREESE J,HECHERMAN D,KADIE C.Empirical analysis of predictive algorithms for collaborative filtering. In: Proceedings of the 14th Conference on Uncertainty in Artificial Intelligence(UAI'98).1998:43-52.
6SARWAR B M,KARYPIS G,KONSTAN J A.Analysis of recommendation algorithms for ecommerce.Proceedings of the ACM EC 00 Conference[C].2000:158-167.