Fair-FLIP: Fair Deepfake Detection with Fairness-Oriented Final Layer Input Prioritising

• URL: http://arxiv.org/abs/2507.08912v1
• Date: Fri, 11 Jul 2025 15:17:02 GMT
• Title: Fair-FLIP: Fair Deepfake Detection with Fairness-Oriented Final Layer Input Prioritising
• Authors: Tomasz Szandala, Fatima Ezzeddine, Natalia Rusin, Silvia Giordano, Omran Ayoub,
• Abstract summary: Deepfake detection methods often exhibit biases across demographic attributes such as ethnicity and gender.<n>We propose a novel post-processing approach, referred to as Fairness-Oriented Final Layer Input Prioritising (Fair-FLIP)<n>We show that Fair-FLIP can enhance fairness metrics by up to 30% while maintaining baseline accuracy, with only a negligible reduction of 0.25%.
• Score: 1.3348326328808557
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Artificial Intelligence-generated content has become increasingly popular, yet its malicious use, particularly the deepfakes, poses a serious threat to public trust and discourse. While deepfake detection methods achieve high predictive performance, they often exhibit biases across demographic attributes such as ethnicity and gender. In this work, we tackle the challenge of fair deepfake detection, aiming to mitigate these biases while maintaining robust detection capabilities. To this end, we propose a novel post-processing approach, referred to as Fairness-Oriented Final Layer Input Prioritising (Fair-FLIP), that reweights a trained model's final-layer inputs to reduce subgroup disparities, prioritising those with low variability while demoting highly variable ones. Experimental results comparing Fair-FLIP to both the baseline (without fairness-oriented de-biasing) and state-of-the-art approaches show that Fair-FLIP can enhance fairness metrics by up to 30% while maintaining baseline accuracy, with only a negligible reduction of 0.25%. Code is available on Github: https://github.com/szandala/fair-deepfake-detection-toolbox

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