G. Luo, C. Tang, and P. Yu. SIGMOD '07: Proceedings of the 2007 ACM SIGMOD international conference on Management of data, page 497--508. New York, NY, USA, ACM, (2007)
J. Allan, V. Lavrenko, and H. Jin. CIKM '00: Proceedings of the ninth international conference on Information and knowledge management, page 374--381. New York, NY, USA, ACM, (2000)
N. Stokes, and J. Carthy. 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR2001), page 424--425. (2001)
N. Stokes, and J. Carthy. HLT '01: Proceedings of the first international conference on Human language technology research, page 1--8. Morristown, NJ, USA, Association for Computational Linguistics, (2001)
J. Allan, R. Papka, and V. Lavrenko. SIGIR '98: Proceedings of the 21st annual international ACM SIGIR conference on Research and development in information retrieval, page 37--45. New York, NY, USA, ACM, (1998)
K. Zhang, J. Zi, and L. Wu. SIGIR '07: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 215--222. New York, NY, USA, ACM, (2007)
Q. He, K. Chang, and E. Lim. SIGIR '07: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 207--214. New York, NY, USA, ACM, (2007)
T. Brants, F. Chen, and A. Farahat. SIGIR '03: Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval, page 330--337. New York, NY, USA, ACM, (2003)
G. Kumaran, and J. Allan. SIGIR '04: Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval, page 297--304. New York, NY, USA, ACM, (2004)
Y. Yang, T. Pierce, and J. Carbonell. Proceedings of SIGIR-98, 21st ACM International Conference on Research and Development in Information Retrieval, page 28--36. Melbourne, AU, (1998)
J. Makkonen, H. Ahonen-Myka, and M. Salmenkivi. Proceedings of International Conference on Natural Language Process, page 175--183. Mumbai, India, (2002)