@inproceedings{KDD-2006-ZhangL,
	author        = "Dell Zhang and Wee Sun Lee",
	booktitle     = "{Proceedings of the 12th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/1150402.1150455",
	isbn          = "1-59593-339-5",
	pages         = "474--483",
	publisher     = "{ACM}",
	title         = "{Extracting key-substring-group features for text classification}",
	year          = 2006,
}