| May '26 | The ELLIS Unit NRW has officially launched. I am one of its co-directors. |
| Apr '26 | Two of our papers were selected for oral presentations at ICLR 2026 workshops: “CATS: Conformalized Adaptive Test-Time Scaling”, which also received a Best Poster Award, and “Test-Time Training Undermines Safety Guardrails”. |
| Jan '25 | Our Machine Learning lecture (SS 24) got a teaching award  |
| Oct '24 | Together with colleagues from RWTH Aachen we are co-organising a Learning on Graphs Meet Up. |
| Oct '24 | Our paper “SVFT: Parameter-Efficient Fine-Tuning with Singular Vectors” was accepted at NeurIPS 2024. |
| Jun '24 | Together with Christian Sohler (UoC), Michael Shaub (RWTH Aachen), and Christopher Morris (RWTH Aachen) we organised the first seminar in a series on “Next Generation Graph Neural Networks” in Cologne. |
| May '24 | Our paper on robust conformal prediction was accepted at ICML 2024. |
| Feb '24 | Two papers were accepted at ICLR 2024, one on label poisoning and one on conformal GNNs. |
| Dec '23 | I attended the Dagstuhl seminar on Scalabale Graph Mining and Learning. |
| Sep '23 | Two papers, one on certificates and one on GATs, were accepted at NeurIPS 2023. |
| Sep '23 | I joined the Center for Data and Simulation Science as a core scientist. |
| Apr '23 | One paper on conformal predictions sets for GNNs was accepted at ICML 2023. |
| Apr '23 | Our group joined the key profile area “Intelligent Methods for Earth System Sciences”. |
| Mar '23 | I will join the University of Cologne as a tenured professor for Computer Science. |
| Jan '23 | Our paper on probing graph-based models was accepted at AISTATS. |
| Jan '23 | Two papers accepted at ICLR 2023, one on robustness and one on geometric graphs. |
| Jan '23 | Our paper on adversarial weight perturbation was accepted at AAAI (oral). |
| Sep '22 | Two papers on robustness, one on adaptive attacks and one on robustness certificates, were accepted at NeurIPS 2022. |
| Sep '22 | This semester I am co-teaching the Elements of Machine Learning lecture with Prof. Jilles Vreeken. |
| Jan '22 | Our paper on generalization of combinatorial solvers was accepted at ICLR 2022. |
| Oct '21 | This semester I am teaching the Trustworthy Graph Neural Networks seminar. |
| Sep '21 | Our paper on robustness of GNNs at scale was accepted at NeurIPS 2021. |
| Sep '21 | I have joined CISPA as a tenure-track faculty  . We have multiple open positions! |
| Jun '21 | I gave a talk on Trustworthy Machine Learning for Graphs with Guarantees at the Math of AI Seminar @ LMU. |
| Mar '21 | I gave a talk on Trustworthy Machine Learning for Graphs at CISPA. |
| Mar '21 | I gave a talk on Provably Robust Machine Learning on Graphs at NEC Labs Europe. |
| Feb '21 | Our paper on the curse of dimensionality for randomized smoothing  was accepted at AISTATS 2021. |
| Jan '21 | Our paper on collective robustness certificates was accepted at ICLR 2021. |
| Dec '20 | I defended my PhD thesis with distinction (summa cum laude)  . |
| Jun '20 | Our paper on robustness certificates was accepted at ICML 2020. |
| May '20 | Our paper on scaling graph neural networks was accepted at KDD 2020 (oral). |