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1 2024

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Tackling Non-IID data and data poisoning in federated learning using adversarial synthetic data

Danilenka Anastasiya

Journal of Automation Mobile Robotics and Intelligent Systems

2024

Vol. 18, No. 3

1--13

Federated learning (FL) involves joint model training by various devices while preserving the privacy of their data. However, it presents a challenge of dealing with heterogeneous data located on participating devices. This issue can further be complicated by the appearance of malicious clients, aiming to sabotage the training process by poisoning local data. In this context, a problem of differentiating between poisoned and non-identically-independently-distributed (non-IID) data appears. To address it, a technique utilizing data-free synthetic data generation is proposed, using a reverse concept of adversarial attack. Adversarial inputs allow for improving the training process by measuring clients’ coherence and favoring trustworthy participants. Experimental results, obtained from the image classification tasks for MNIST, EMNIST, and CIFAR-10 datasets are reported and analyzed.