Bayesian Adversarial Privacy

• URL: http://arxiv.org/abs/2603.04199v1
• Date: Wed, 04 Mar 2026 15:46:24 GMT
• Title: Bayesian Adversarial Privacy
• Authors: Cameron Bell, Timothy Johnston, Antoine Luciano, Christian P Robert,
• Abstract summary: This work introduces a new quantitative notion of privacy that is both contextual and specific.<n>We argue that it provides a more meaningful notion of privacy than the widely utilised framework of differential privacy.
• Score: 0.048998185508205734
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Theoretical and applied research into privacy encompasses an incredibly broad swathe of differing approaches, emphasis and aims. This work introduces a new quantitative notion of privacy that is both contextual and specific. We argue that it provides a more meaningful notion of privacy than the widely utilised framework of differential privacy and a more explicit and rigorous formulation than what is commonly used in statistical disclosure theory. Our definition relies on concepts inherent to standard Bayesian decision theory, while departing from it in several important respects. In particular, the party controlling the release of sensitive information should make disclosure decisions from the prior viewpoint, rather than conditional on the data, even when the data is itself observed. Illuminating toy examples and computational methods are discussed in high detail in order to highlight the specificities of the method.

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