arXiv:2603.25517cs.NEcs.AI2026-03

用进化算法设计抗攻击的卷积网络,不依赖对抗训练也能保持高鲁棒性。

NERO-Net: A Neuroevolutionary Approach for the Design of Adversarially Robust CNNs

  • 通过进化搜索分离架构与对抗训练影响,仅用正常训练评估鲁棒性。
  • 搜索出的最优模型在FGSM攻击下达33%准确率,干净样本上达87%。
  • 无需对抗训练即具内在鲁棒性,适合安全关键场景应用。

神经进化能自动化神经网络设计,但常忽略模型固有的对抗脆弱性,限制其在安全关键场景的应用。尽管对抗训练方法备受关注,但具备内在鲁棒性的网络架构设计仍鲜有研究。本文提出NERO-Net,一种基于神经进化的卷积神经网络设计方法,旨在提升模型对对抗攻击的抵抗能力。其搜索策略在进化过程中避免使用对抗训练,通过适应度函数鼓励候选模型在标准训练下既保持高干净样本准确率,又获得高攻击后准确率。我们在CIFAR-10数据集上评估NERO-Net,重点关注 $L_\infty$-鲁棒性。进化搜索中表现最佳的个体在FGSM攻击下达到33%准确率(作为鲁棒性估算指标),同时保持87%的干净样本准确率。经标准训练后,该模型的对抗准确率提升至47%,干净准确率达93%,表明其具有内在架构鲁棒性。经过对抗训练后,模型在AutoAttack下的整体准确率为40%。

原文摘要 · Abstract (English)

Neuroevolution automates the complex task of neural network design but often ignores the inherent adversarial fragility of evolved models which is a barrier to adoption in safety-critical scenarios. While robust training methods have received significant attention, the design of architectures exhibiting intrinsic robustness remains largely unexplored. In this paper, we propose NERO-Net, a neuroevolutionary approach to design convolutional neural networks better equipped to resist adversarial attacks. Our search strategy isolates architectural influence on robustness by avoiding adversarial training during the evolutionary loop. As such, our fitness function promotes candidates that, even trained with standard (non-robust) methods, achieve high post-attack accuracy without sacrificing the accuracy on clean samples. We assess NERO-Net on CIFAR-10 with a specific focus on $L_\infty$-robustness. In particular, the fittest individual emerged from evolutionary search with 33% accuracy against FGSM, used as an efficient estimator for robustness during the search phase, while maintaining 87% clean accuracy. Further standard training of this individual boosted these metrics to 47% adversarial and 93% clean accuracy, suggesting inherent architectural robustness. Adversarial training brings the overall accuracy of the model up to 40% against AutoAttack.

神经进化对抗鲁棒性架构设计

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