Search Results for author: Yaya Cheng

Found 4 papers, 4 papers with code

Natural Color Fool: Towards Boosting Black-box Unrestricted Attacks

1 code implementation5 Oct 2022 Shengming Yuan, Qilong Zhang, Lianli Gao, Yaya Cheng, Jingkuan Song

Unrestricted color attacks, which manipulate semantically meaningful color of an image, have shown their stealthiness and success in fooling both human eyes and deep neural networks.

Adversarial Attack

Practical Evaluation of Adversarial Robustness via Adaptive Auto Attack

1 code implementation CVPR 2022 Ye Liu, Yaya Cheng, Lianli Gao, Xianglong Liu, Qilong Zhang, Jingkuan Song

Specifically, by observing that adversarial examples to a specific defense model follow some regularities in their starting points, we design an Adaptive Direction Initialization strategy to speed up the evaluation.

Adversarial Robustness

Fast Gradient Non-sign Methods

1 code implementation25 Oct 2021 Yaya Cheng, Jingkuan Song, Xiaosu Zhu, Qilong Zhang, Lianli Gao, Heng Tao Shen

Based on the linearity hypothesis, under $\ell_\infty$ constraint, $sign$ operation applied to the gradients is a good choice for generating perturbations.

Feature Space Targeted Attacks by Statistic Alignment

1 code implementation25 May 2021 Lianli Gao, Yaya Cheng, Qilong Zhang, Xing Xu, Jingkuan Song

However, the current choice of pixel-wise Euclidean Distance to measure the discrepancy is questionable because it unreasonably imposes a spatial-consistency constraint on the source and target features.

Translation

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