G. Hua, M. Zhang, Y. Liu, S. Ma, and L. Ru. Proceedings of the 20th international conference companion on World wide web, page 59--60. New York, NY, USA, ACM, (2011)
Y. Yue, Y. Gao, O. Chapelle, Y. Zhang, and T. Joachims. Proceeding of the 33rd international ACM SIGIR conference on Research and development in information retrieval, page 507--514. New York, NY, USA, ACM, (2010)
U. Ozertem, R. Jones, and B. Dumoulin. Proceedings of the 20th international conference on World wide web, page 397--406. New York, NY, USA, ACM, (2011)
J. He, and X. Li. Proceedings of the 9th international semantic web conference on The semantic web - Volume Part II, page 339--354. Berlin, Heidelberg, Springer-Verlag, (2010)
F. Guo, C. Liu, and Y. Wang. Proceedings of the Second ACM International Conference on Web Search and Data Mining, page 124--131. New York, NY, USA, ACM, (2009)
K. Hofmann, B. Huurnink, M. Bron, and M. de Rijke. Proceeding of the 33rd international ACM SIGIR conference on Research and development in information retrieval, page 761--762. New York, NY, USA, ACM, (2010)