Title: SHAKE-GNN: Scalable Hierarchical Kirchhoff-Forest Graph Neural Network
Primary area: learning on graphs and other geometries & topologies
Keywords: Graph Neural Networks, Kirchhoff Forests, Hierarchical Graph Coarsening, Scalability, Graph Classification

Abstract: Graph Neural Networks (GNNs) have achieved remarkable success across a range of learning tasks. However, scaling GNNs to large graphs remains a significant challenge, especially for graph-level tasks. In this work, we introduce SHAKE-GNN, a novel scalable graph-level GNN framework based on a hierarchy of Kirchhoff Forests, a class of random spanning forests used to construct stochastic multi-resolution decompositions of graphs. SHAKE-GNN produces multi-scale representations, enabling flexible trade-offs between efficiency and performance. We introduce an improved, data-driven strategy for selecting the trade-off parameter and analyse the time-complexity of SHAKE-GNN. Experimental results on multiple large-scale graph classification benchmarks demonstrate that SHAKE-GNN achieves competitive performance while offering improved scalability.

TL;DR: We propose SHAKE-GNN, a scalable graph neural network that uses Kirchhoff Forest–based multi-resolution coarsening to balance efficiency and accuracy in graph classification.