@article{12:52,author={Shai Shalev-Shwartz and Ambuj Tewari}, Title={Stochastic Methods for l1-regularized Loss Minimization},journal={Journal of Machine Learning Research},volume={12}, url={http://www.jmlr.org/papers/volume12/shalev-shwartz11a/shalev-shwartz11a.pdf}}