Federated learning (FL) is a powerful Machine Learning (ML) paradigm that enables distributed clients to collaboratively learn a shared global model while keeping the data on the original device, thereby preserving privacy. A central challenge in FL is the effective aggregation of local model weights from disparate and potentially unbalanced participating clients. Existing methods often treat each client indiscriminately, applying a single proportion to the entire local model. However, it is empirically advantageous for each weight to be assigned a specific proportion. This paper introduces an innovative Element-Wise Weights Aggregation Method for Federated Learning (EWWA-FL) aimed at optimizing learning performance and accelerating convergence speed. Unlike traditional FL approaches, EWWA-FL aggregates local weights to the global model at the level of individual elements, thereby allowing each participating client to make element-wise contributions to the learning process. By taking into account the unique dataset characteristics of each client, EWWA-FL enhances the robustness of the global model to different datasets while also achieving rapid convergence. The method is flexible enough to employ various weighting strategies. Through comprehensive experiments, we demonstrate the advanced capabilities of EWWA-FL, showing significant improvements in both accuracy and convergence speed across a range of backbones and benchmarks.

该研究介绍了一种基于元素权重聚合的联邦学习方法（EWWA-FL），旨在优化学习性能和加速收敛速度。通过将本地权重聚合到全局模型的个别元素级别，该方法允许每个参与的客户端对学习过程进行元素级贡献，从而提高了全局模型对不同数据集的鲁棒性以及实现了快速收敛。该方法具有灵活性，可以采用各种加权策略，通过全面的实验证明了EWWA-FL的先进性，展示了在各种骨干和基准测试中精确度和收敛速度的显著改进。

一种用于联邦学习的逐元素权重聚合方法