Search Results for author: Sohir Maskey

Found 6 papers, 2 papers with code

Generalization Bounds for Message Passing Networks on Mixture of Graphons

no code implementations4 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.

Generalization Bounds

Weisfeiler and Leman Go Loopy: A New Hierarchy for Graph Representational Learning

1 code implementation20 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 $r + 2$.

A Fractional Graph Laplacian Approach to Oversmoothing

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.

Generalization Analysis of Message Passing Neural Networks on Large Random Graphs

no code implementations1 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.

Graph Classification

Transferability of Graph Neural Networks: an Extended Graphon Approach

no code implementations21 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.

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