Papers › Communication-Efficient Heterogeneous Federated Learning with Generalized Heavy-Ball Momentum
Communication-Efficient Heterogeneous Federated Learning with Generalized Heavy-Ball Momentum
Riccardo Zaccone, Carlo Masone, Marco Ciccone
Federated Learning (FL) has emerged as the state-of-the-art approach for learning from decentralized data in privacy-constrained scenarios. However, system and statistical challenges hinder real-world applications, which demand efficient learning from edge devices and robustness to heterogeneity. Despite significant research efforts, existing approaches (i) are not sufficiently robust, (ii) do not perform well in large-scale scenarios, and (iii) are not communication efficient. In this work, we propose a novel Generalized Heavy-Ball Momentum (GHBM), motivating its principled application to counteract the effects of statistical heterogeneity in FL. Then, we present FedHBM as an adaptive, communication-efficient by-design instance of GHBM. Extensive experimentation on vision and language tasks, in both controlled and realistic large-scale scenarios, provides compelling evidence of substantial and consistent performance gains over the state of the art.
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