@article{federatedsubmodelaveraging,
  title = {Federated Submodel Optimization for Hot and Cold Data Features},
  author = {Yucheng Ding and Chaoyue Niu and Fan Wu and Shaojie Tang and Chengfei Lv and Yanghe Feng and Guihai Chen},
  year = {2021},
  eprint = {2109.07704},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.07704v4},
}