@article{doublevariancereductionasmoothingtrick,
  title = {Double Variance Reduction: A Smoothing Trick for Composite Optimization Problems without First-Order Gradient},
  author = {Hao Di and Haishan Ye and Yueling Zhang and Xiangyu Chang and Guang Dai and Ivor W. Tsang},
  year = {2024},
  eprint = {2405.17761},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2405.17761v1},
}