@inproceedings{ML-1991-Lewis,
	author        = "David D. Lewis",
	booktitle     = "{Proceedings of the Eighth International Workshop on Machine Learning}",
	isbn          = "1-55860-200-3",
	pages         = "235--239",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Learning in Intelligent Information Retrieval}",
	year          = 1991,
}