Privacy-preserving generative adversarial network for case-based explainability in medical image analysis

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Abstract

Although Deep Learning models have achieved incredible results in medical image classification tasks, their lack of interpretability hinders their deployment in the clinical context. Case-based interpretability provides intuitive explanations, as it is a much more human-like approach than saliency-map-based interpretability. Nonetheless, since one is dealing with sensitive visual data, there is a high risk of exposing personal identity, threatening the individuals' privacy. In this work, we propose a privacy-preserving generative adversarial network for the privatization of case-based explanations. We address the weaknesses of current privacy-preserving methods for visual data from three perspectives: realism, privacy, and explanatory value. We also introduce a counterfactual module in our Generative Adversarial Network that provides counterfactual case-based explanations in addition to standard factual explanations. Experiments were performed in a biometric and medical dataset, demonstrating the network's potential to preserve the privacy of all subjects and keep its explanatory evidence while also maintaining a decent level of intelligibility.

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CITATION STYLE

APA

Montenegro, H., Silva, W., & Cardoso, J. S. (2021). Privacy-preserving generative adversarial network for case-based explainability in medical image analysis. IEEE Access, 9, 148037–148047. https://doi.org/10.1109/ACCESS.2021.3124844

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