@article{JMLR:v22:20-611,
  author  = {Bin Gu and Xiyuan Wei and Shangqian Gao and Ziran Xiong and Cheng Deng and Heng Huang},
  title   = {Black-Box Reductions for Zeroth-Order Gradient  Algorithms  to Achieve Lower  Query Complexity},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {170},
  pages   = {1--47},
  url     = {http://jmlr.org/papers/v22/20-611.html}
}