@inproceedings{SIGIR-2003-LiZO,
	author        = "Tao Li and Shenghuo Zhu and Mitsunori Ogihara",
	booktitle     = "{Proceedings of the 26th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/860435.860531",
	isbn          = "1-58113-646-3",
	pages         = "421--422",
	publisher     = "{ACM}",
	title         = "{Topic hierarchy generation via linear discriminant projection}",
	year          = 2003,
}