@inproceedings{SIGIR-2011-ZhangMLM,
	author        = "Dell Zhang and Robert Mao and Haitao Li and Joanne Mao",
	booktitle     = "{Proceedings of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2009916.2010130",
	isbn          = "978-1-4503-0757-4",
	pages         = "1223--1224",
	publisher     = "{ACM}",
	title         = "{How to count thumb-ups and thumb-downs?: an information retrieval approach to user-rating based ranking of items}",
	year          = 2011,
}