@inproceedings{SIGIR-2011-XueC,
	author        = "Xiaobing Xue and W. Bruce Croft",
	booktitle     = "{Proceedings of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2009916.2010085",
	isbn          = "978-1-4503-0757-4",
	pages         = "1133--1134",
	publisher     = "{ACM}",
	title         = "{Modeling subset distributions for verbose queries}",
	year          = 2011,
}