@inproceedings{SIGIR-2011-ZhouHH,
	author        = "Xiaofeng Zhou and Jimmy Xiangji Huang and Ben He",
	booktitle     = "{Proceedings of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2009916.2009943",
	isbn          = "978-1-4503-0757-4",
	pages         = "175--184",
	publisher     = "{ACM}",
	title         = "{Enhancing ad-hoc relevance weighting using probability density estimation}",
	year          = 2011,
}