@article{fastridgeregressionwithrandomized,
  title = {Fast Ridge Regression with Randomized Principal Component Analysis and Gradient Descent},
  author = {Yichao Lu and Dean P. Foster},
  year = {2014},
  eprint = {1405.3952},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1405.3952v1},
}