RoGA: Towards Generalizable Deepfake Detection through Robust Gradient Alignment

• URL: http://arxiv.org/abs/2505.20653v1
• Date: Tue, 27 May 2025 03:02:21 GMT
• Title: RoGA: Towards Generalizable Deepfake Detection through Robust Gradient Alignment
• Authors: Lingyu Qiu, Ke Jiang, Xiaoyang Tan,
• Abstract summary: We propose a novel learning objective that aligns generalization gradient updates with ERM gradient updates.<n>The key innovation is the application of perturbations to model parameters, aligning the ascending points across domains.<n> Experimental results on multiple challenging deepfake detection datasets demonstrate that our gradient alignment strategy outperforms state-of-the-art domain generalization techniques.
• Score: 13.327130030147565
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent advancements in domain generalization for deepfake detection have attracted significant attention, with previous methods often incorporating additional modules to prevent overfitting to domain-specific patterns. However, such regularization can hinder the optimization of the empirical risk minimization (ERM) objective, ultimately degrading model performance. In this paper, we propose a novel learning objective that aligns generalization gradient updates with ERM gradient updates. The key innovation is the application of perturbations to model parameters, aligning the ascending points across domains, which specifically enhances the robustness of deepfake detection models to domain shifts. This approach effectively preserves domain-invariant features while managing domain-specific characteristics, without introducing additional regularization. Experimental results on multiple challenging deepfake detection datasets demonstrate that our gradient alignment strategy outperforms state-of-the-art domain generalization techniques, confirming the efficacy of our method. The code is available at https://github.com/Lynn0925/RoGA.

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