@article{JMLR:v20:16-383,
  author  = {Jie Wang and Zhanqiu Zhang and Jieping Ye},
  title   = {Two-Layer Feature Reduction for Sparse-Group Lasso via Decomposition of Convex Sets},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {163},
  pages   = {1--42},
  url     = {http://jmlr.org/papers/v20/16-383.html}
}