T. Cheng, X. Yan, and K. Chang. VLDB '07: Proceedings of the 33rd international conference on Very large data bases, page 387--398. VLDB Endowment, (2007)
K. He, Y. Chang, and W. Lu. WI '07: Proceedings of the 2007 IEEE/WIC/ACM International Conference on Web Intelligence, page 683-686. IEEE Computer Society, (2007)
Y. Chang, K. He, S. Yu, and W. Lu. WI '06: Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence, page 1038--1041. Washington, DC, USA, IEEE Computer Society, (2006)
D. Cohn, and H. Chang. ICML '00: Proceedings of the Seventeenth International Conference on Machine Learning, page 167--174. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (2000)