@inproceedings{RecSys-2012-PradelUG,
	author        = "Bruno Pradel and Nicolas Usunier and Patrick Gallinari",
	booktitle     = "{Proceedings of the Sixth Conference on Recommender Systems}",
	doi           = "10.1145/2365952.2365982",
	isbn          = "978-1-4503-1270-7",
	pages         = "147--154",
	publisher     = "{ACM}",
	title         = "{Ranking with non-random missing ratings: influence of popularity and positivity on evaluation metrics}",
	year          = 2012,
}