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- W3101970908 abstract "Federated Learning (FL) is a distributed learning paradigm that scales on-device learning collaboratively and privately. Standard FL algorithms such as FedAvg are primarily geared towards smooth unconstrained settings. In this paper, we study the Federated Composite Optimization (FCO) problem, in which the loss function contains a non-smooth regularizer. Such problems arise naturally in FL applications that involve sparsity, low-rank, monotonicity, or more general constraints. We first show that straightforward extensions of primal algorithms such as FedAvg are not well-suited for FCO since they suffer from the of primal averaging, resulting in poor convergence. As a solution, we propose a new primal-dual algorithm, Federated Dual Averaging (FedDualAvg), which by employing a novel server dual averaging procedure circumvents the curse of primal averaging. Our theoretical analysis and empirical experiments demonstrate that FedDualAvg outperforms the other baselines." @default.
- W3101970908 created "2020-11-23" @default.
- W3101970908 creator A5018931712 @default.
- W3101970908 creator A5082314161 @default.
- W3101970908 creator A5087483482 @default.
- W3101970908 date "2020-11-17" @default.
- W3101970908 modified "2023-09-27" @default.
- W3101970908 title "Federated Composite Optimization" @default.
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- W3101970908 hasPublicationYear "2020" @default.
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