no code implementations • 6 Oct 2023 • Marcel Kollovieh, Lukas Gosch, Yan Scholten, Marten Lienen, Stephan Günnemann
In this work, we introduce Score-Based Adversarial Generation (ScoreAG), a novel framework that leverages the advancements in score-based generative models to generate adversarial examples beyond $\ell_p$-norm constraints, so-called unrestricted adversarial examples, overcoming their limitations.
1 code implementation • 16 Aug 2023 • Francesco Campi, Lukas Gosch, Tom Wollschläger, Yan Scholten, Stephan Günnemann
We perform the first adversarial robustness study into Graph Neural Networks (GNNs) that are provably more powerful than traditional Message Passing Neural Networks (MPNNs).
no code implementations • NeurIPS 2023 • Lukas Gosch, Simon Geisler, Daniel Sturm, Bertrand Charpentier, Daniel Zügner, Stephan Günnemann
Including these contributions, we demonstrate that adversarial training is a state-of-the-art defense against adversarial structure perturbations.
no code implementations • 1 May 2023 • Lukas Gosch, Daniel Sturm, Simon Geisler, Stephan Günnemann
Many works show that node-level predictions of Graph Neural Networks (GNNs) are unrobust to small, often termed adversarial, changes to the graph structure.
no code implementations • 2 Jan 2023 • Morgane Ayle, Jan Schuchardt, Lukas Gosch, Daniel Zügner, Stephan Günnemann
We propose to solve this issue by training graph neural networks on disjoint subgraphs of a given training graph.