@inproceedings{KDD-2012-Li,
	author        = "Robin Li",
	booktitle     = "{Proceedings of the 18th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/2339530.2339532",
	isbn          = "978-1-4503-1462-6",
	pages         = "1",
	publisher     = "{ACM}",
	title         = "{Nine real hard problems we’d like you to solve}",
	year          = 2012,
}