1. Xia, Weiwei, Liang He, Lei Ren, et al. 2008. Improving collaborative filtering algorithms. In IEEE International Conference, December 2008, 1480–1484.
2. Su, Xiaoyuan, T.M. Khoshgoftaar, and R. Greiner. 2008. A collaborative filtering algorithm based on variance analysis of attributes-value preference. In IEEE/WIC/ACM International Conference, December 2008, vol. 1, 633–639.
3. Kim, B.M., Q. Li, C.S. Park, et al. 2006. A new approach for combining content—based and collaborative filters. Journal of Intelligent Information System 27 (I): 79–91.
4. Lee, J.S., C.H. Jun, J. Lee, et al. 2005. Classification based collaborative filtering using market basket data. Expert System with Applications 29 (3): 700–704.
5. Gong, Songjie, and Guanghua Cheng. 2008. Mining user interest change for improving collaborative filtering. In Intelligent Information Technology Application 2008. Second International Symposium 2008, vol. 3, 24–27.