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- W4288267072 abstract "Deep neural networks perform well on real world data but are prone to adversarial perturbations: small changes in the input easily lead to misclassification. In this work, we propose an attack methodology not only for cases where the perturbations are measured by $ell_p$ norms, but in fact any adversarial dissimilarity metric with a closed proximal form. This includes, but is not limited to, $ell_1, ell_2$, and $ell_infty$ perturbations; the $ell_0$ counting norm (i.e. true sparseness); and the total variation seminorm, which is a (non-$ell_p$) convolutional dissimilarity measuring local pixel changes. Our approach is a natural extension of a recent adversarial attack method, and eliminates the differentiability requirement of the metric. We demonstrate our algorithm, ProxLogBarrier, on the MNIST, CIFAR10, and ImageNet-1k datasets. We consider undefended and defended models, and show that our algorithm easily transfers to various datasets. We observe that ProxLogBarrier outperforms a host of modern adversarial attacks specialized for the $ell_0$ case. Moreover, by altering images in the total variation seminorm, we shed light on a new class of perturbations that exploit neighboring pixel information." @default.
- W4288267072 created "2022-07-28" @default.
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- W4288267072 date "2019-08-05" @default.
- W4288267072 modified "2023-09-27" @default.
- W4288267072 title "A principled approach for generating adversarial images under non-smooth dissimilarity metrics" @default.
- W4288267072 doi "https://doi.org/10.48550/arxiv.1908.01667" @default.
- W4288267072 hasPublicationYear "2019" @default.
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