Papers › Maximum-Entropy Adversarial Data Augmentation for Improved Generalization and Robustness

Maximum-Entropy Adversarial Data Augmentation for Improved Generalization and Robustness

15 Oct 2020NeurIPS 2020 12arXiv:2010.08001archive 2025-07-28

Long Zhao, Ting Liu, Xi Peng, Dimitris Metaxas

Adversarial data augmentation has shown promise for training robust deep neural networks against unforeseen data shifts or corruptions. However, it is difficult to define heuristics to generate effective fictitious target distributions containing "hard" adversarial perturbations that are largely different from the source distribution. In this paper, we propose a novel and effective regularization term for adversarial data augmentation. We theoretically derive it from the information bottleneck principle, which results in a maximum-entropy formulation. Intuitively, this regularization term encourages perturbing the underlying source distribution to enlarge predictive uncertainty of the current model, so that the generated "hard" adversarial perturbations can improve the model robustness during training. Experimental results on three standard benchmarks demonstrate that our method consistently outperforms the existing state of the art by a statistically significant margin.

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