Sparsifying the Update Step in Graph Neural Networks - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

Sparsifying the Update Step in Graph Neural Networks

Résumé

Message-Passing Neural Networks (MPNNs), the most prominent Graph Neural Network (GNN) framework, celebrate much success in the analysis of graph-structured data. Concurrently, the sparsification of Neural Network models attracts a great amount of academic and industrial interest. In this paper we conduct a structured, empirical study of the effect of sparsification on the trainable part of MPNNs known as the Update step. To this end, we design a series of models to successively sparsify the linear transform in the Update step. Specifically, we propose the ExpanderGNN model with a tuneable sparsification rate and the Activation-Only GNN, which has no linear transform in the Update step. In agreement with a growing trend in the literature the sparsification paradigm is changed by initialising sparse neural network architectures rather than expensively sparsifying already trained architectures. Our novel benchmark models enable a better understanding of the influence of the Update step on model performance and outperform existing simplified benchmark models such as the Simple Graph Convolution. The ExpanderGNNs, and in some cases the Activation-Only models, achieve performance on par with their vanilla counterparts on several downstream tasks, while containing significantly fewer trainable parameters. Our code is publicly available at: https://github.com/ChangminWu/ExpanderGNN.
Fichier principal
Vignette du fichier
SparsifyingTheUpdateStepInGraphNeuralNetworks.pdf (410.5 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04447629 , version 1 (08-02-2024)

Identifiants

Citer

Johannes Lutzeyer, Changmin Wu, Michalis Vazirgiannis. Sparsifying the Update Step in Graph Neural Networks. ICLR Workshop on Geometrical and Topological Representation Learning, Apr 2022, Online, France. ⟨hal-04447629⟩
4 Consultations
13 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More