@inproceedings{SIGIR-2008-LiDZS,
	author        = "Tao Li and Chris H. Q. Ding and Yi Zhang and Bo Shao",
	booktitle     = "{Proceedings of the 31st International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1390334.1390368",
	isbn          = "978-1-60558-164-4",
	pages         = "187--194",
	publisher     = "{ACM}",
	title         = "{Knowledge transformation from word space to document space}",
	year          = 2008,
}