@inproceedings{CIKM-2009-LvZ09a,
	author        = "Yuanhua Lv and ChengXiang Zhai",
	booktitle     = "{Proceedings of the 18th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1645953.1646259",
	isbn          = "978-1-60558-512-3",
	pages         = "1895--1898",
	publisher     = "{ACM}",
	title         = "{A comparative study of methods for estimating query language models with pseudo feedback}",
	year          = 2009,
}