@article{14:47,author={Paramveer S. Dhillon and Dean P.  Foster and Sham M.  Kakade and Lyle H. Ungar}, Title={A Risk Comparison of Ordinary Least Squares vs Ridge Regression},journal={Journal of Machine Learning Research},volume={14}, url={http://jmlr.org/papers/volume14/dhillon13a/dhillon13a.pdf}}