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- W4311991358 abstract "Adversarial training, especially projected gradient descent (PGD), has proven to be a successful approach for improving robustness against adversarial attacks. After adversarial training, gradients of models with respect to their inputs have a preferential direction. However, the direction of alignment is not mathematically well established, making it difficult to evaluate quantitatively. We propose a novel definition of this direction as the direction of the vector pointing toward the closest point of the support of the closest inaccurate class in decision space. To evaluate the alignment with this direction after adversarial training, we apply a metric that uses generative adversarial networks to produce the smallest residual needed to change the class present in the image. We show that PGD-trained models have a higher alignment than the baseline according to our definition, that our metric presents higher alignment values than a competing metric formulation, and that enforcing this alignment increases the robustness of models." @default.
- W4311991358 created "2023-01-03" @default.
- W4311991358 creator A5010212355 @default.
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- W4311991358 date "2020-09-10" @default.
- W4311991358 modified "2023-10-16" @default.
- W4311991358 title "Quantifying the Preferential Direction of the Model Gradient in Adversarial Training With Projected Gradient Descent" @default.
- W4311991358 doi "https://doi.org/10.48550/arxiv.2009.04709" @default.
- W4311991358 hasPublicationYear "2020" @default.
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