@inproceedings{CIKM-2009-JiaYM,
	author        = "Lifeng Jia and Clement T. Yu and Weiyi Meng",
	booktitle     = "{Proceedings of the 18th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1645953.1646241",
	isbn          = "978-1-60558-512-3",
	pages         = "1827--1830",
	publisher     = "{ACM}",
	title         = "{The effect of negation on sentiment analysis and retrieval effectiveness}",
	year          = 2009,
}