Robust Asynchronous Federated Learning With Time-Weighted and Stale Model Aggregation
Federated Learning (FL) ensures collaborative learning among multiple clients while maintaining data locally. However, the traditional synchronous FL solutions have lower accuracy and require more communication time in scenarios where most devices drop out during learning. Therefore, we propose an A...
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Published in | IEEE transactions on dependable and secure computing Vol. 21; no. 4; pp. 2361 - 2375 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Washington
IEEE
01.07.2024
IEEE Computer Society |
Subjects | |
Online Access | Get full text |
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Summary: | Federated Learning (FL) ensures collaborative learning among multiple clients while maintaining data locally. However, the traditional synchronous FL solutions have lower accuracy and require more communication time in scenarios where most devices drop out during learning. Therefore, we propose an Asy nchronous F ederated L earning (AsyFL) scheme using time-weighted and stale model aggregation, which effectively solves the problem of poor model performance due to the heterogeneity of devices. Then, we integrate Symmetric Homomorphic Encryption (SHE) into AsyFL to propose Asy nchronous P rivacy- P reserving F ederated L earning (Asy-PPFL), which protects the privacy of clients and achieves lightweight computing. Privacy analysis shows that Asy-PPFL is indistinguishable under Known Plaintext Attack (KPA) and convergence analysis proves the effectiveness of our schemes. A large number of experiments show that AsyFL and Asy-PPFL can achieve the highest accuracy of 58.40% and 58.26% on Cifar-10 dataset when most clients (i.e., 80%) are offline or delayed, respectively. |
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ISSN: | 1545-5971 1941-0018 |
DOI: | 10.1109/TDSC.2023.3304788 |