arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.08294cs.CR
收藏

医疗保健中自适应隐私保护联邦学习的鲁棒聚合

Robust Aggregation for Adaptive Privacy Preserving Federated Learning in Healthcare

Matei Grama, Maria Musat, Luis Muñoz-González, Jonathan Passerat-Palmbach, Daniel Rueckert, Amir Alansary

摘要:

联邦学习(FL)使来自多个数据拥有方的协作训练模型成为可能,而无需共享数据。考虑到患者医疗数据的隐私法规,医疗保健中基于学习的系统可以从隐私保护FL方法中受益匪浅。然而,典型的模型聚合方法在FL是敏感的局部模型更新,这可能会导致在学习一个强大的和准确的全局模型失败。在这项工作中,我们实现和评估不同的强大的聚合方法在FL应用于医疗数据。此外,我们表明,这种方法可以检测和丢弃错误或恶意的本地客户端在训练过程中。我们使用两个真实世界的医疗数据集进行两组实验,用于训练医疗诊断分类任务。每个数据集被用来模拟三种不同的鲁棒FL聚合策略面对不同的中毒攻击时的性能。结果表明,隐私保护方法可以成功地应用在一起拜占庭鲁棒聚合技术。我们特别观察到使用差分隐私(DP)不会显著影响不同聚合策略的最终学习收敛。

英文摘要:

Federated learning (FL) has enabled training models collaboratively from multiple data owning parties without sharing their data. Given the privacy regulations of patient's healthcare data, learning-based systems in healthcare can greatly benefit from privacy-preserving FL approaches. However, typical model aggregation methods in FL are sensitive to local model updates, which may lead to failure in learning a robust and accurate global model. In this work, we implement and evaluate different robust aggregation methods in FL applied to healthcare data. Furthermore, we show that such methods can detect and discard faulty or malicious local clients during training. We run two sets of experiments using two real-world healthcare datasets for training medical diagnosis classification tasks. Each dataset is used to simulate the performance of three different robust FL aggregation strategies when facing different poisoning attacks. The results show that privacy preserving methods can be successfully applied alongside Byzantine-robust aggregation techniques. We observed in particular how using differential privacy (DP) did not significantly impact the final learning convergence of the different aggregation strategies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑