@inproceedings{policydrivenattacklearningtoqueryfor,
  title = {Policy-Driven Attack: Learning to Query for Hard-label Black-box Adversarial Examples},
  author = {Ziang Yan and Yiwen Guo and Jian Liang and ChangShui Zhang},
  year = {2021},
  booktitle = {ICLR 2021 1},
  url = {https://openreview.net/forum?id=pzpytjk3Xb2},
}