@inproceedings{CIKM-2009-LiuZSNW,
	author        = "Yi Liu and Liangjie Zhang and Ruihua Song and Jian-Yun Nie and Ji-Rong Wen",
	booktitle     = "{Proceedings of the 18th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1645953.1646174",
	isbn          = "978-1-60558-512-3",
	pages         = "1569--1572",
	publisher     = "{ACM}",
	title         = "{Clustering queries for better document ranking}",
	year          = 2009,
}