CRAFT:用于联邦训练的冲突解决聚合方法 / CRAFT: Conflict-Resolved Aggregation for Federated Training
1️⃣ 一句话总结
本文提出了一种名为CRAFT的联邦学习聚合框架,通过几何校正思路将全局模型更新视为满足无冲突约束的最优方向,从而有效解决客户端数据分布不均导致的更新冲突,提升全局模型精度并减少各客户端性能差异。
The aggregation of conflicting client updates remains a fundamental bottleneck in federated learning (FL) under heterogeneous data distributions. Naive averaging can produce a global update that improves the global objective while conflicting with specific clients, causing degradation for those clients. In this work, we propose CRAFT (Conflict-Resolved Aggregation for Federated Training), a new aggregation framework that treats the global update as a geometric correction problem. We formulate aggregation as finding the update closest to a reference direction while satisfying conflict-free alignment constraints. We derive a closed-form expression for the constrained optimization problem, avoiding the computational overhead of iterative solvers. Furthermore, we use a layer-wise adaptation to address conflicts at varying feature granularities. We provide a theoretical analysis showing that CRAFT promotes a common-descent structure and mitigates conflicts through its projection geometry. Extensive experiments on heterogeneous benchmarks demonstrate that CRAFT improves the accuracy of the global model while reducing performance disparity across clients compared with state-of-the-art baselines. The source code for CRAFT is available at this https URL.
CRAFT:用于联邦训练的冲突解决聚合方法 / CRAFT: Conflict-Resolved Aggregation for Federated Training
本文提出了一种名为CRAFT的联邦学习聚合框架,通过几何校正思路将全局模型更新视为满足无冲突约束的最优方向,从而有效解决客户端数据分布不均导致的更新冲突,提升全局模型精度并减少各客户端性能差异。
源自 arXiv: 2605.21317