@conference {Zou_nips13,
	title = {Contrastive Learning Using Spectral Methods},
	booktitle = {Proceedings of the Annual Conference on Neural Information Processing Systems (NIPS 2013)},
	year = {2013},
	pages = {2238-2246},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/zou_nips13.pdf},
	author = {James Zou and Daniel Hsu and David C. Parkes and Ryan P. Adams}
}
