R. Cai, C. Zhang, L. Zhang, and W. Ma. MULTIMEDIA '07: Proceedings of the 15th international conference on Multimedia, page 1065--1074. New York, NY, USA, ACM, (2007)
X. Li, L. Chen, L. Zhang, F. Lin, and W. Ma. MULTIMEDIA '06: Proceedings of the 14th annual ACM international conference on Multimedia, page 607--610. New York, NY, USA, ACM, (2006)
G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, and W. Ma. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 75--82. New York, NY, USA, ACM Press, (2006)
G. Xue, H. Zeng, Z. Chen, Y. Yu, W. Ma, W. Xi, and W. Fan. CIKM '04: Proceedings of the thirteenth ACM international conference on Information and knowledge management, page 118--126. New York, NY, USA, ACM, (2004)
G. Xue, H. Zeng, Z. Chen, Y. Yu, W. Ma, W. Xi, and W. Fan. CIKM '04: Proceedings of the 13th ACM conference on Information and Knowledge Management, page 118--126. New York, NY, USA, ACM Press, (2004)
S. Yu, D. Cai, J. Wen, and W. Ma. WWW '03: Proceedings of the 12th international conference on World Wide Web, page 11--18. New York, NY, USA, ACM Press, (2003)
Q. Zhao, S. Hoi, T. Liu, S. Bhowmick, M. Lyu, and W. Ma. WWW '06: Proceedings of the 15th international conference on World Wide Web, page 543--552. New York, NY, USA, ACM Press, (2006)
Z. Nie, Y. Zhang, J. Wen, and W. Ma. WWW '05: Proceedings of the 14th international conference on World Wide Web, page 567--574. New York, NY, USA, ACM Press, (2005)
Q. Zhao, S. Hoi, T. Liu, S. Bhowmick, M. Lyu, and W. Ma. WWW '06: Proceedings of the 15th international conference on World Wide Web, page 543--552. New York, NY, USA, ACM Press, (2006)
H. Cui, J. Wen, J. Nie, and W. Ma. Proceedings of the eleventh international conference on World Wide Web, Proceedings of the tenth international conference on World Wide Web, (2002)