@inproceedings{SIGIR-2005-Chai,
	author        = "Kian Ming Adam Chai",
	booktitle     = "{Proceedings of the 28th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1076034.1076144",
	isbn          = "1-59593-034-5",
	pages         = "593--594",
	publisher     = "{ACM}",
	title         = "{Expectation of f-measures: tractable exact computation and some empirical observations of its properties}",
	year          = 2005,
}