Learning to Construct Knowledge Bases from the World Wide Web.
Artificial Intelligence, 118(1-2):69-113, 2000.
M. Craven, D. DiPasquo, D. Freitag, A. McCallum, T. Mitchell, K. Nigam and S. Slattery.
[doi]  [BibTeX] 
Webwatcher: A tour guide for the World Wide Web.
In: Proceedings of the International Joint Conference on Artificial Intelligence (IJCAI), pages 770-777. Morgan Kaufmann, San Francisco, CA, 1997.
T. Joachims, D. Freitag and T. Mitchell.
[BibTeX]