Data-Heterogeneous Hierarchical Federated Learning with Mobility

• URL: http://arxiv.org/abs/2306.10692v1
• Date: Mon, 19 Jun 2023 04:22:18 GMT
• Title: Data-Heterogeneous Hierarchical Federated Learning with Mobility
• Authors: Tan Chen, Jintao Yan, Yuxuan Sun, Sheng Zhou, Deniz Gunduz, Zhisheng Niu
• Abstract summary: Federated learning enables distributed training of machine learning (ML) models across multiple devices. We consider a data-heterogeneous HFL scenario with mobility, mainly targeting vehicular networks. We show that mobility can indeed improve the model accuracy by up to 15.1% when training a convolutional neural network.
• Score: 20.482704508355905
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Federated learning enables distributed training of machine learning (ML) models across multiple devices in a privacy-preserving manner. Hierarchical federated learning (HFL) is further proposed to meet the requirements of both latency and coverage. In this paper, we consider a data-heterogeneous HFL scenario with mobility, mainly targeting vehicular networks. We derive the convergence upper bound of HFL with respect to mobility and data heterogeneity, and analyze how mobility impacts the performance of HFL. While mobility is considered as a challenge from a communication point of view, our goal here is to exploit mobility to improve the learning performance by mitigating data heterogeneity. Simulation results verify the analysis and show that mobility can indeed improve the model accuracy by up to 15.1\% when training a convolutional neural network on the CIFAR-10 dataset using HFL.

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