@inproceedings{KDD-2013-NgK,
	author        = "Andrew Y. Ng and Daphne Koller",
	booktitle     = "{Proceedings of the 19th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/2487575.2492148",
	isbn          = "978-1-4503-2174-7",
	pages         = "2",
	publisher     = "{ACM}",
	title         = "{The online revolution: education for everyone}",
	year          = 2013,
}