S. Papadopoulos, Y. Kompatsiaris, and A. Vakali. Proceedings of the 12th international conference on Data warehousing and knowledge discovery, page 65--76. Berlin, Heidelberg, Springer-Verlag, (2010)
X. Wang, and C. Zhai. Proceedings of the 30 th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval 2007, (2007)
R. Baeza-Yates, and A. Tiberi. KDD '07: Proceedings of the 13th ACM SIGKDD international conference on Knowledge discovery and data mining, page 76--85. New York, NY, USA, ACM, (2007)
H. Kim, and P. Chan. IUI '03: Proceedings of the 8th international conference on Intelligent user interfaces, page 101--108. New York, NY, USA, ACM Press, (2003)
A. McCallum, K. Nigam, and L. Ungar. KDD '00: Proceedings of the sixth ACM SIGKDD international conference on Knowledge discovery and data mining, page 169--178. New York, NY, USA, ACM Press, (2000)
D. Beeferman, and A. Berger. KDD '00: Proceedings of the sixth ACM SIGKDD international conference on Knowledge discovery and data mining, page 407--416. New York, NY, USA, ACM, (2000)
B. Larsen, and C. Aone. KDD '99: Proceedings of the fifth ACM SIGKDD international conference on Knowledge discovery and data mining, page 16--22. New York, NY, USA, ACM Press, (1999)