no code implementations • 4 Apr 2024 • Sohir Maskey, Gitta Kutyniok, Ron Levie
In this more realistic and challenging scenario, we provide a generalization bound that decreases as the average number of nodes in the graphs increases.
1 code implementation • 20 Mar 2024 • Raffaele Paolino, Sohir Maskey, Pascal Welke, Gitta Kutyniok
We introduce $r$-loopy Weisfeiler-Leman ($r$-$\ell{}$WL), a novel hierarchy of graph isomorphism tests and a corresponding GNN framework, $r$-$\ell{}$MPNN, that can count cycles up to length $r + 2$.
1 code implementation • NeurIPS 2023 • Sohir Maskey, Raffaele Paolino, Aras Bacho, Gitta Kutyniok
In this paper, we generalize the concept of oversmoothing from undirected to directed graphs.
no code implementations • 28 Oct 2022 • Sohir Maskey, Ali Parviz, Maximilian Thiessen, Hannes Stärk, Ylli Sadikaj, Haggai Maron
Graph neural networks (GNNs) are the primary tool for processing graph-structured data.
no code implementations • 1 Feb 2022 • Sohir Maskey, Ron Levie, Yunseok Lee, Gitta Kutyniok
Message passing neural networks (MPNN) have seen a steep rise in popularity since their introduction as generalizations of convolutional neural networks to graph-structured data, and are now considered state-of-the-art tools for solving a large variety of graph-focused problems.
no code implementations • 21 Sep 2021 • Sohir Maskey, Ron Levie, Gitta Kutyniok
Our main contributions can be summarized as follows: 1) we prove that any fixed GCNN with continuous filters is transferable under graphs that approximate the same graphon, 2) we prove transferability for graphs that approximate unbounded graphon shift operators, which are defined in this paper, and, 3) we obtain non-asymptotic approximation results, proving linear stability of GCNNs.