@article{JMLR:v22:20-147,
  author  = {Jianyu Wang and Gauri Joshi},
  title   = {Cooperative SGD: A Unified Framework for the Design and Analysis of Local-Update SGD Algorithms},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {213},
  pages   = {1--50},
  url     = {http://jmlr.org/papers/v22/20-147.html}
}