B. Mobasher, H. Dai, T. Luo, Y. Sun, and J. Zhu. Proceedings of the
International Conference on E-Commerce and Web Technologies (ECWeb2000), page 165--176. Greenwich, UK, (2000)
A. Williams, and C. Tsatsoulis. Proceedings of the First Workshop on Ontology Learning
OL'2000, Berlin, Germany, Fourteenth European Conference on Artificial Intelligence, (2000)
T. Joachims, D. Freitag, and T. Mitchell. Proceedings of the International Joint Conference on
Artificial Intelligence (IJCAI), page 770--777. San Francisco, CA, Morgan Kaufmann, (1997)
H. Graubitz, M. Spiliopoulou, and K. Winkler. Proceedings of the First IEEE International Conference on Data Mining, San Jose, CA, page 171--178. (2001)