@misc{shu2023federated,
      title={Federated Zeroth-Order Optimization using Trajectory-Informed Surrogate Gradients}, 
      author={Yao Shu and Xiaoqiang Lin and Zhongxiang Dai and Bryan Kian Hsiang Low},
      year={2023},
      eprint={2308.04077},
      archivePrefix={arXiv},
      primaryClass={cs.LG}
}