arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.07033cs.CV
收藏

从网络层次结构的角度探索可转移的鲁棒对抗扰动生成

Exploring Transferable and Robust Adversarial Perturbation Generation from the Perspective of Network Hierarchy

Beihang University(北京航空航天大学)

Ruikui Wang, Yuanfang Guo, Ruijie Yang, Yunhong Wang

摘要:

对抗样本的可移植性和鲁棒性是黑盒对抗攻击的两个重要特性。本文从网络层次结构的角度探讨了提高这两种能力的有效机制,典型的网络可分为输出阶段、中间阶段和输入阶段。由于源模型过于特殊化,在输出阶段很难提高对抗性扰动的可传递性和鲁棒性。因此,我们在本文中集中在中间和输入阶段,并提出了一个可转移的和强大的对抗扰动生成(TRAP)方法。具体来说,我们提出了动态引导机制,以不断计算精确的方向性指导扰动产生的中间阶段。在输入阶段,而不是在现有的方法中采用的单一形式的变换增广,我们利用多种形式的仿射变换增广,以进一步丰富输入的多样性和提高对抗扰动的鲁棒性和可转移性。大量的实验表明,我们的TRAP实现了令人印象深刻的可移植性和对某些干扰的高鲁棒性。

英文摘要:

The transferability and robustness of adversarial examples are two practical yet important properties for black-box adversarial attacks. In this paper, we explore effective mechanisms to boost both of them from the perspective of network hierarchy, where a typical network can be hierarchically divided into output stage, intermediate stage and input stage. Since over-specialization of source model, we can hardly improve the transferability and robustness of the adversarial perturbations in the output stage. Therefore, we focus on the intermediate and input stages in this paper and propose a transferable and robust adversarial perturbation generation (TRAP) method. Specifically, we propose the dynamically guided mechanism to continuously calculate accurate directional guidances for perturbation generation in the intermediate stage. In the input stage, instead of the single-form transformation augmentations adopted in the existing methods, we leverage multiform affine transformation augmentations to further enrich the input diversity and boost the robustness and transferability of the adversarial perturbations. Extensive experiments demonstrate that our TRAP achieves impressive transferability and high robustness against certain interferences.

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。

↑