@article{safescreeningwithvariationalinequalities,
  title = {Safe Screening With Variational Inequalities and Its Application to LASSO},
  author = {Jun Liu and Zheng Zhao and Jie Wang and Jieping Ye},
  year = {2013},
  eprint = {1307.7577},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1307.7577v3},
}