@inproceedings{ECIR-2012-LvZ,
	author        = "Yuanhua Lv and ChengXiang Zhai",
	booktitle     = "{Proceedings of the 34th European Conference on Information Retrieval Research: Advances in Information Retrieval}",
	doi           = "10.1007/978-3-642-28997-2_21",
	isbn          = "978-3-642-28996-5",
	pages         = "244--255",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Log-Logistic Model-Based Interpretation of TF Normalization of BM25}",
	volume        = 7224,
	year          = 2012,
}