@article{sparsefederatedlearningwithhierarchical,
  title = {Sparse Federated Learning with Hierarchical Personalized Models},
  author = {Xiaofeng Liu and Qing Wang and Yunfeng Shao and Yinchuan Li},
  year = {2022},
  eprint = {2203.13517},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2203.13517v3},
}