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Struggle with Adversarial Defense? Try Diffusion
April 15, 2024, 4:44 a.m. | Yujie Li, Yanbin Wang, Haitao xu, Bin Liu, Jianguo Sun, Zhenhao Guo, Wenrui Ma
cs.CV updates on arXiv.org arxiv.org
Abstract: Adversarial attacks induce misclassification by introducing subtle perturbations. Recently, diffusion models are applied to the image classifiers to improve adversarial robustness through adversarial training or by purifying adversarial noise. However, diffusion-based adversarial training often encounters convergence challenges and high computational expenses. Additionally, diffusion-based purification inevitably causes data shift and is deemed susceptible to stronger adaptive attacks. To tackle these issues, we propose the Truth Maximization Diffusion Classifier (TMDC), a generative Bayesian classifier that builds upon …
abstract adversarial adversarial attacks adversarial training arxiv attacks challenges classifiers computational convergence cs.cr cs.cv data defense diffusion diffusion models however image noise robustness shift struggle through training type
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