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Poster

Constructing Semantics-Aware Adversarial Examples with Probabilistic Perspective

Andi Zhang · Mingtian Zhang · Damon Wischik


Abstract:

We propose a probabilistic perspective on adversarial examples, allowing us to embed subjective understanding of semantics as a distribution into the process of generating adversarial examples. Despite significant pixel-level modifications compared to traditional adversarial attacks, our method preserves the overall semantics of the image, making the changes difficult for humans to detect. This extensive pixel-level modification enhances our method's ability to deceive classifiers designed to defend against adversarial attacks. Our empirical findings indicate that the proposed methods achieve higher success rates in circumventing adversarial defense mechanisms, while maintaining a low detection rate by human observers.

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