@inproceedings{CIKM-2012-KanhabuaN12a,
	author        = "Nattiya Kanhabua and Kjetil Nørvåg",
	booktitle     = "{Proceedings of the 21st ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2396761.2398707",
	isbn          = "978-1-4503-1156-4",
	pages         = "2623--2626",
	publisher     = "{ACM}",
	title         = "{Estimating query difficulty for news prediction retrieval}",
	year          = 2012,
}