A Convergence Theory for Federated Average: Beyond Smoothness
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Abstract (arXiv)
Federated learning enables a large amount of edge computing devices to learn a model without data sharing jointly. As a leading algorithm in this setting, Federated Average FedAvg, which runs Stochastic Gradient Descent (SGD) in parallel on local devices and averages the sequences only once in a while, have been widely used due to their simplicity and low communication cost. However, despite recent research efforts, it lacks theoretical analysis under assumptions beyond smoothness. In this paper, we analyze the convergence of FedAvg. Different from the existing work, we relax the assumption of strong smoothness. More specifically, we assume the semi-smoothness and semi-Lipschitz properties for the loss function, which have an additional first-order term in assumption definitions. In addition, we also assume bound on the gradient, which is weaker than the commonly used bounded gradient assumption in the convergence analysis scheme. As a solution, this paper provides a theoretical convergence study on Federated Learning.
Key facts. Cited by 4 papers in the map (data through 7 Oct 2026). Builds on 30 of its 37 references that are in the map. First posted on arXiv 3 Nov 2022.
Builds on
30 of 37 references.
References · 30
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18 more
- 2018Adaptive Federated Learning in Resource Constrained Edge Computing Systemscited by 408
- 2020A Unified Theory of Decentralized SGD with Changing Topology and Local Updatescited by 361
- 2019Error Feedback Fixes SignSGD and other Gradient Compression Schemescited by 306
- 2018Parallel Restarted SGD with Faster Convergence and Less Communication: Demystifying Why Model Averaging Works for Deep Learningcited by 277
- 2019Tighter Theory for Local SGD on Identical and Heterogeneous Datacited by 266
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- 2020Federated Learning with Compression: Unified Analysis and Sharp Guaranteescited by 159
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- 2019First Analysis of Local GD on Heterogeneous Datacited by 80
- 2019Federated Learning Of Out-Of-Vocabulary Wordscited by 51
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- 2019Communication trade-offs for synchronized distributed SGD with large step sizecited by 4
Built on by
Citing papers per year: 2023: 1; 2024: 0; 2025: 1; 2026: 2.
4 papers.
- 2023An effective theory of collective deep learningcited by 7
- 2025Noise Resilient Over-The-Air Federated Learning In Heterogeneous Wireless Networkscited by 1
- 2026ERIS: Enhancing Privacy and Scalability in Federated Learning via Federated Shard Aggregationcited by 0
- 2026FL-Sailer: Efficient and Privacy-Preserving Federated Learning for Scalable Single-Cell Epigenetic Data Analysis via Adaptive Samplingcited by 0
- 2026FL-Sailer: Efficient and Privacy-Preserving Federated Learning for Scalable Single-Cell Epigenetic Data Analysis via Adaptive Sampling6 May 2026
- 2026ERIS: Enhancing Privacy and Scalability in Federated Learning via Federated Shard Aggregation9 Feb 2026
- 2025Noise Resilient Over-The-Air Federated Learning In Heterogeneous Wireless Networks25 Mar 2025
- 2023An effective theory of collective deep learning19 Oct 2023