arXiv:2603.06646cs.LGcs.AI2026-03

用可信度动态调整机制,提升医疗骨折愈合评估的联邦学习安全性。

Trust Aware Federated Learning for Secure Bone Healing Stage Interpretation in e-Health

  • 基于自适应可信度评分筛选客户端贡献,防止恶意数据干扰
  • 相比基线方法,模型训练更稳定且分类准确率提升显著
  • 适合关注医疗联邦学习安全性的研究者与临床数据协作项目

本文提出一种可信度感知的联邦学习框架,用于通过频响数据的谱特征解析骨折愈合阶段。针对分布式医疗传感环境中不可靠或恶意参与方的问题,该框架在模拟客户端上使用Flower框架训练多层感知机模型,并集成自适应可信度评分缩放与过滤(ATSSSF)机制,结合指数移动平均(EMA)平滑技术,动态评估、验证并过滤客户端贡献。研究比较了固定因子与基于可信度变异性自适应调整两种平滑策略,低可信度客户端被排除聚合,待可靠性恢复后重新纳入,确保模型完整性同时保持包容性。采用标准分类指标对比了ATSSSF与基线联邦平均(Federated Averaging)策略的表现。实验结果表明,自适应信任管理可有效缓解受损客户端的负面影响,提升训练稳定性与预测性能,具备鲁棒检测能力。该工作验证了自适应信任机制在联邦医疗传感中的可行性,并指出未来可拓展至临床跨域数据聚合场景。

原文摘要 · Abstract (English)

This paper presents a trust aware federated learning (FL) framework for interpreting bone healing stages using spectral features derived from frequency response data. The primary objective is to address the challenge posed by either unreliable or adversarial participants in distributed medical sensing environments. The framework employs a multi-layer perceptron model trained across simulated clients using the Flower FL framework. The proposed approach integrates an Adaptive Trust Score Scaling and Filtering (ATSSSF) mechanism with exponential moving average (EMA) smoothing to assess, validate and filter client contributions.Two trust score smoothing strategies have been investigated, one with a fixed factor and another that adapts according to trust score variability. Clients with low trust are excluded from aggregation and readmitted once their reliability improves, ensuring model integrity while maintaining inclusivity. Standard classification metrics have been used to compare the performance of ATSSSF with the baseline Federated Averaging strategy. Experimental results demonstrate that adaptive trust management can improve both training stability and predictive performance by mitigating the negative effects of compromised clients while retaining robust detection capabilities. The work establishes the feasibility for adaptive trust mechanisms in federated medical sensing and identifies extension to clinical cross silo aggregation as a future research direction.

联邦学习医疗健康可信机制骨骼愈合

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