Y. Wu, Y. Yao, F. Xu, H. Tong, and J. Lu. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management, page 2287--2292. New York, NY, USA, ACM, (2016)
L. Stenneth, O. Wolfson, P. Yu, and B. Xu. Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, page 54--63. New York, NY, USA, ACM, (2011)
N. Kuicheu, W. Ning, F. Narcisse, X. De, and F. Siewe. Information Science and Engineering (ICISE), 2009 1st International Conference on, page 2288 -2291. (December 2009)
X. Xu, N. Yuruk, Z. Feng, and T. Schweiger. KDD '07: Proceedings of the 13th ACM SIGKDD international conference on Knowledge discovery and data mining, page 824--833. New York, NY, USA, ACM, (2007)
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)