Adaptive Test-Time Defense with the Manifold Hypothesis

arxiv(2022)

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摘要
In this work, we formulate a novel framework of adversarial robustness using the manifold hypothesis. Our framework provides sufficient conditions for defending against adversarial examples. We develop a test-time defense method with variational inference and our formulation. The developed approach combines manifold learning with variational inference to provide adversarial robustness without the need for adversarial training. We show that our approach can provide adversarial robustness even if attackers are aware of the existence of test-time defense. In addition, our approach can also serve as a test-time defense mechanism for variational autoencoders.
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