@article{safeactivefeatureselectionforsparse,
  title = {Safe Active Feature Selection for Sparse Learning},
  author = {Shaogang Ren and Jianhua Z. Huang and Shuai Huang and Xiaoning Qian},
  year = {2018},
  eprint = {1806.05817},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1806.05817v2},
}