@inproceedings{SIGIR-2008-XuA08a,
	author        = "Zuobing Xu and Ram Akella",
	booktitle     = "{Proceedings of the 31st International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1390334.1390408",
	isbn          = "978-1-60558-164-4",
	pages         = "427--434",
	publisher     = "{ACM}",
	title         = "{A new probabilistic retrieval model based on the dirichlet compound multinomial distribution}",
	year          = 2008,
}