@inproceedings{RecSys-2014-Nguyen,
	author        = "Tien T. Nguyen",
	booktitle     = "{Proceedings of the Eighth Conference on Recommender Systems}",
	doi           = "10.1145/2645710.2653363",
	isbn          = "978-1-4503-2668-1",
	pages         = "417--420",
	publisher     = "{ACM}",
	title         = "{Improving recommender systems: user roles and lifecycles}",
	year          = 2014,
}