G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, and W. Ma. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR \textquotesingle06, ACM Press, (2006)
Y. Wang, L. Wang, Y. Li, D. He, and T. Liu. Proceedings of the 26th Annual Conference on Learning Theory, volume 30 of Proceedings of Machine Learning Research, page 25--54. Princeton, NJ, USA, PMLR, (June 2013)
C. Xiong, R. Power, and J. Callan. Proceedings of the 26th International Conference on World Wide Web, page 1271--1279. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2017)
Y. Yamaguchi, T. Takahashi, T. Amagasa, and H. Kitagawa. Web Information Systems Engineering – WISE 2010, volume 6488 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2010)
Y. Duan, L. Jiang, T. Qin, M. Zhou, and H. Shum. Proceedings of the 23rd International Conference on Computational Linguistics, page 295--303. Stroudsburg, PA, USA, Association for Computational Linguistics, (2010)
Y. Liu, B. Gao, T. Liu, Y. Zhang, Z. Ma, S. He, and H. Li. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 451--458. New York, NY, USA, ACM, (2008)
Z. Dou, R. Song, X. Yuan, and J. Wen. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management, page 73--82. New York, NY, USA, ACM, (2008)