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InfoResearchPeer-reviewed

Rethinking Frequency Modeling: Tail-Aware Dynamic Adversarial Training for Long-Tailed Robustness

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Summary

This paper proposes Tail-Aware Dynamic Adversarial Training (TAD-AT) to improve adversarial robustness when training data follows a long-tailed class distribution. The authors report that class frequency alone does not predict adversarial vulnerability, and that adversarial training under long-tailed data is unstable for tail classes. TAD-AT combines a frequency- and accuracy-aware training loss, a class-wise vulnerability-adjusted attack, and class-adaptive weight averaging, with experiments on long-tailed benchmarks showing significant robustness gains.