Communication-Efficient Federated Learning with Sparsity and Quantization.

Google proposed federated learning in 2016, which aims to solve the problems of data silos and privacy leakage in machine learning. However, as the difficulty of the target task increases and the model performance requirements progressively improve, these have to consume more communication costs to increase the model parameters. In order to solve this problem, this paper proposes the Federated Learning with Sparsity and Quantization(FedSQ) method, where we select the gradients with a large rate of change in the gradients of the participants in each round for transmission, and utilize binary compression to quantize the selected model parameters, while adopting a suitable aggregation algorithm to replace the original FedAvg, so that it does not excessively impair the model accuracy in the case of high-fold compression. Finally, we verify the effectiveness of the scheme proposed in this paper, which can improve the quality of model training under model compression.