Lutzeyer, Johannes F.

15 publications

NeurIPS 2025 Enhancing Graph Classification Robustness with Singular Pooling Sofiane Ennadir, Oleg Smirnov, Yassine Abbahaddou, Lele Cao, Johannes F. Lutzeyer

ICML 2025 Graph Neural Network Generalization with Gaussian Mixture Model Based Augmentation Yassine Abbahaddou, Fragkiskos D. Malliaros, Johannes F. Lutzeyer, Amine M. Aboussalah, Michalis Vazirgiannis

IJCAI 2025 Speeding up Hyper-Heuristics with Markov-Chain Operator Selection and the Only-Worsening Acceptance Operator Abderrahim Bendahi, Benjamin Doerr, Adrien Fradin, Johannes F. Lutzeyer

ICLR 2025 Understanding Virtual Nodes: Oversquashing and Node Heterogeneity Joshua Southern, Francesco Di Giovanni, Michael M. Bronstein, Johannes F. Lutzeyer

AAAI 2024 A Simple and yet Fairly Effective Defense for Graph Neural Networks Sofiane Ennadir, Yassine Abbahaddou, Johannes F. Lutzeyer, Michalis Vazirgiannis, Henrik Boström

ICLR 2024 Bounding the Expected Robustness of Graph Neural Networks Subject to Node Feature Attacks Yassine Abbahaddou, Sofiane Ennadir, Johannes F. Lutzeyer, Michalis Vazirgiannis, Henrik Boström

NeurIPS 2024 If You Want to Be Robust, Be Wary of Initialization Sofiane Ennadir, Johannes F. Lutzeyer, Michalis Vazirgiannis, El Houcine Bergou

AAAI 2023 Graph Ordering Attention Networks Michail Chatzianastasis, Johannes F. Lutzeyer, George Dasoulas, Michalis Vazirgiannis

ICML 2023 Path Neural Networks: Expressive and Accurate Graph Neural Networks Gaspard Michel, Giannis Nikolentzos, Johannes F. Lutzeyer, Michalis Vazirgiannis

AISTATS 2022 Node Feature Kernels Increase Graph Convolutional Network Robustness Mohamed El Amine Seddik, Changmin Wu, Johannes F. Lutzeyer, Michalis Vazirgiannis

NeurIPSW 2022 Improving Graph Neural Networks at Scale: Combining Approximate PageRank and CoreRank Ariel Ricardo Ramos Vela, Johannes F. Lutzeyer, Anastasios Giovanidis, Michalis Vazirgiannis

NeurIPSW 2022 New Frontiers in Graph Autoencoders: Joint Community Detection and Link Prediction Guillaume Salha-Galvan, Johannes F. Lutzeyer, George Dasoulas, Romain Hennequin, Michalis Vazirgiannis

ICLRW 2022 Sparsifying the Update Step in Graph Neural Networks Johannes F. Lutzeyer, Changmin Wu, Michalis Vazirgiannis

NeurIPSW 2022 Structure-Aware Antibiotic Resistance Classification Using Graph Neural Networks Aymen Qabel, Sofiane Ennadir, Giannis Nikolentzos, Johannes F. Lutzeyer, Michail Chatzianastasis, Henrik Boström, Michalis Vazirgiannis

ICLR 2021 Learning Parametrised Graph Shift Operators George Dasoulas, Johannes F. Lutzeyer, Michalis Vazirgiannis