C. Wang, J. Han, Y. Jia, J. Tang, D. Zhang, Y. Yu, and J. Guo. Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 203--212. New York, NY, USA, ACM, (2010)
S. Aya, C. Lagoze, and T. Joachims. Proceedings of the International Conference on Knowledge Management, page 287--298. World Scientific Publishing, (October 2005)
S. Aya, C. Lagoze, and T. Joachims. Proceedings of the International Conference on Knowledge Management, page 287--298. World Scientific Publishing, (October 2005)