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- W3094480364 abstract "It is now widely known that by adversarial attacks, clean images with invisible perturbations can fool deep neural networks. To defend adversarial attacks, we design a block containing multiple paths to learn robust features and the parameters of these paths are required to be orthogonal with each other. The so-called Orthogonal Multi-Path (OMP) block could be posed in any layer of a neural network. Via forward learning and backward correction, one OMP block makes the neural networks learn features that are appropriate for all the paths and hence are expected to be robust. With careful design and thorough experiments on e.g., the positions of imposing orthogonality constraint, and the trade-off between the variety and accuracy, the robustness of the neural networks is significantly improved. For example, under white-box PGD attack with l∞ bound 8/255 (this is a fierce attack that can make the accuracy of many vanilla neural networks drop to nearly 10% on CIFAR10), VGG16 with the proposed OMP block could keep over 50% accuracy. For black-box attacks, neural networks equipped with an OMP block have accuracy over 80%. The performance under both white-box and black-box attacks is much better than the existing state-of-the-art adversarial defenders." @default.
- W3094480364 created "2020-10-29" @default.
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- W3094480364 date "2021-05-04" @default.
- W3094480364 modified "2023-09-26" @default.
- W3094480364 title "Learn Robust Features via Orthogonal Multi-Path" @default.
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