Single-Model Attribution of Generative Models Through Final-Layer Inversion

• URL: http://arxiv.org/abs/2306.06210v5
• Date: Wed, 26 Jun 2024 12:31:04 GMT
• Title: Single-Model Attribution of Generative Models Through Final-Layer Inversion
• Authors: Mike Laszkiewicz, Jonas Ricker, Johannes Lederer, Asja Fischer,
• Abstract summary: We propose a new approach for single-model attribution in the open-world setting based on final-layer inversion and anomaly detection. We show that the utilized final-layer inversion can be reduced to a convex lasso optimization problem, making our approach theoretically sound and computationally efficient.
• Score: 16.506531590300806
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent breakthroughs in generative modeling have sparked interest in practical single-model attribution. Such methods predict whether a sample was generated by a specific generator or not, for instance, to prove intellectual property theft. However, previous works are either limited to the closed-world setting or require undesirable changes to the generative model. We address these shortcomings by, first, viewing single-model attribution through the lens of anomaly detection. Arising from this change of perspective, we propose FLIPAD, a new approach for single-model attribution in the open-world setting based on final-layer inversion and anomaly detection. We show that the utilized final-layer inversion can be reduced to a convex lasso optimization problem, making our approach theoretically sound and computationally efficient. The theoretical findings are accompanied by an experimental study demonstrating the effectiveness of our approach and its flexibility to various domains.

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