@article{qekdqueryefficientanddatafreeknowledge,
  title = {IDEAL: Query-Efficient Data-Free Learning from Black-box Models},
  author = {Jie Zhang and Chen Chen and Lingjuan Lyu},
  year = {2022},
  eprint = {2205.11158},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2205.11158v2},
}