Imitating the Functionality of Image-to-Image Models Using a Single Example

• URL: http://arxiv.org/abs/2406.00828v2
• Date: Mon, 09 Dec 2024 08:52:14 GMT
• Title: Imitating the Functionality of Image-to-Image Models Using a Single Example
• Authors: Nurit Spingarn-Eliezer, Tomer Michaeli,
• Abstract summary: We study the possibility of imitating the functionality of an image-to-image translation model by observing input-output pairs. We find that even a single example typically suffices for learning to imitate the model's functionality.
• Score: 24.819964498441635
• License:
• Abstract: We study the possibility of imitating the functionality of an image-to-image translation model by observing input-output pairs. We focus on cases where training the model from scratch is impossible, either because training data are unavailable or because the model architecture is unknown. This is the case, for example, with commercial models for biological applications. Since the development of these models requires large investments, their owners commonly keep them confidential, and reveal only a few input-output examples on the company's website or in an academic paper. Surprisingly, we find that even a single example typically suffices for learning to imitate the model's functionality, and that this can be achieved using a simple distillation approach. We present an extensive ablation study encompassing a wide variety of model architectures, datasets and tasks, to characterize the factors affecting vulnerability to functionality imitation, and provide a preliminary theoretical discussion on the reasons for this unwanted behavior.

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