Shen, S., Y. Cheng, J. Liu, and L. Xu. “STL-SGD: Speeding Up Local SGD With Stagewise Communication Period”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 11, May 2021, pp. 9576-84, doi:10.1609/aaai.v35i11.17153.