1[1]Armstrong R, Freitag D, Joachims T, et al. WebWatcher:A Learning Apprentice for the World Wide Web[C]. AAAI 1995 Spring Symposium on Information Gathering from Heterogeneous. Distributed Environments, Stanford, March 1995.
2[2]Balabanovic M, Shoham Y. Fab:Content-Based,Collagorative Recommendation[J]. Communications of the ACM, 1997, 40(3): 66-70.
3[3]Thorsten Joachims, Dayne Freitag, Tom Mitchell. WebWatcher: A Tour Guide for the World Wide Web[Z].
4[4]M Pazzani, J Muramatsu, D Billsus. Syskill & Webert: Identifying Interesting Web Sites[C]. In AAAI Conference. Portland 1996.
5[5]Kathleen Webster, Kathryn Paul. 1996. Beyond Surfing:Tools and Techniques for Searching the Web[J]. Informating Technology, Jan 1996.