@article{federatedlearningwithhierarchical,
  title = {Federated learning with hierarchical clustering of local updates to improve training on non-IID data},
  author = {Christopher Briggs and Zhong Fan and Peter Andras},
  year = {2020},
  eprint = {2004.11791},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2004.11791v2},
}