@inproceedings{DanielySaBeSh11,
title = {Multiclass Learnability and the {ERM} principle},
author = {Amit Daniely and Sivan Sabato and Shai Ben-David and Shai Shalev-Shwartz},
booktitle = {Proceedings of the 24th Annual Conference on
		  Learning Theory (COLT)},
year = 2011,
pages = {19:207--232},
publisher = {JMLR Workshop and Conference Proceedings}
}