Adversarial Robustness in Parameter-Space Classifiers

Implicit Neural Representations (INRs) have been recently garnering increasing interest in various research fields, mainly due to their ability to represent large, complex data in a compact and continuous manner. Past work further showed that numerous popular downstream tasks can be performed directly in the INR parameter-space. Doing so can substantially reduce the computational resources required to process the represented data in their native domain. A major difficulty in using modern machine-learning approaches, is their high susceptibility to adversarial attacks, which have been shown to greatly limit the reliability and applicability of such methods in a wide range of settings. In this work, we show that parameter-space models trained for classification are inherently robust to adversarial attacks -- without the need of any robust training. To support our claims, we develop a novel suite of adversarial attacks targeting parameter-space classifiers, and furthermore analyze practical considerations of attacking parameter-space classifiers.

@article{shor2025_2502.20314,
  title={ Adversarial Robustness in Parameter-Space Classifiers },
  author={ Tamir Shor and Ethan Fetaya and Chaim Baskin and Alex Bronstein },
  journal={arXiv preprint arXiv:2502.20314},
  year={ 2025 }
}