Hierarchical Federated Learning for Social Network with Mobility

• URL: http://arxiv.org/abs/2509.14938v2
• Date: Tue, 23 Sep 2025 14:59:08 GMT
• Title: Hierarchical Federated Learning for Social Network with Mobility
• Authors: Zeyu Chen, Wen Chen, Jun Li, Qingqing Wu, Ming Ding, Xuefeng Han, Xiumei Deng, Liwei Wang,
• Abstract summary: Federated Learning (FL) offers a decentralized solution that allows collaborative local model training and global aggregation.<n>In conventional FL frameworks, data privacy is typically preserved under the assumption that local data remains absolutely private.<n>We propose a hierarchical federated learning framework that considers both data sharing among clients and their mobility patterns.
• Score: 37.91674733307191
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Federated Learning (FL) offers a decentralized solution that allows collaborative local model training and global aggregation, thereby protecting data privacy. In conventional FL frameworks, data privacy is typically preserved under the assumption that local data remains absolutely private, whereas the mobility of clients is frequently neglected in explicit modeling. In this paper, we propose a hierarchical federated learning framework based on the social network with mobility namely HFL-SNM that considers both data sharing among clients and their mobility patterns. Under the constraints of limited resources, we formulate a joint optimization problem of resource allocation and client scheduling, which objective is to minimize the energy consumption of clients during the FL process. In social network, we introduce the concepts of Effective Data Coverage Rate and Redundant Data Coverage Rate. We analyze the impact of effective data and redundant data on the model performance through preliminary experiments. We decouple the optimization problem into multiple sub-problems, analyze them based on preliminary experimental results, and propose Dynamic Optimization in Social Network with Mobility (DO-SNM) algorithm. Experimental results demonstrate that our algorithm achieves superior model performance while significantly reducing energy consumption, compared to traditional baseline algorithms.

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