Investigating problems at the crossroads of natural language
processing, data mining, Web search, and the Semantic Web.
"Unsupervised named-entity extraction from the Web: An experimental study"
Oren Etzioni, Michael Cafarella, Doug Downey, Ana-Maria Popescu, Tal Shaked, Stephen Soderland, Daniel S. Weld, and Alexander Yates
Artificial Intelligence, 165(1): 91-134, 2005