GED-Consistent Disentanglement of Aligned and Unaligned Substructures for Graph Similarity Learning

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Main Authors: Zhan, Zhentao, Xu, Xiaoliang, Wang, Jingjing, Wang, Junmei
Format: Preprint
Published: 2025
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author Zhan, Zhentao
Xu, Xiaoliang
Wang, Jingjing
Wang, Junmei
author_facet Zhan, Zhentao
Xu, Xiaoliang
Wang, Jingjing
Wang, Junmei
contents Graph Similarity Computation (GSC) is a fundamental graph related task where Graph Edit Distance (GED) serves as a prevalent metric. GED is determined by an optimal alignment between a pair of graphs that partitions each into aligned (zero-cost) and unaligned (cost-incurring) substructures. Due to NP-hard nature of exact GED computation, GED approximations based on Graph Neural Network(GNN) have emerged. Existing GNN-based GED approaches typically learn node embeddings for each graph and then aggregate pairwise node similarities to estimate the final similarity. Despite their effectiveness, we identify a mismatch between this prevalent node-centric matching paradigm and the core principles of GED. This discrepancy leads to two critical limitations: (1) a failure to capture the global structural correspondence for optimal alignment, and (2) a misattribution of edit costs driven by spurious node level signals. To address these limitations, we propose GCGSim, a GED-consistent graph similarity learning framework centering on graph-level matching and substructure-level edit costs. Specifically, we make three core technical contributions. Extensive experiments on four benchmark datasets show that GCGSim achieves state-of-the-art performance. Our comprehensive analyses further validate that the framework effectively learns disentangled and semantically meaningful substructure representations.
format Preprint
id arxiv_https___arxiv_org_abs_2511_19837
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle GED-Consistent Disentanglement of Aligned and Unaligned Substructures for Graph Similarity Learning
Zhan, Zhentao
Xu, Xiaoliang
Wang, Jingjing
Wang, Junmei
Machine Learning
Artificial Intelligence
Databases
Graph Similarity Computation (GSC) is a fundamental graph related task where Graph Edit Distance (GED) serves as a prevalent metric. GED is determined by an optimal alignment between a pair of graphs that partitions each into aligned (zero-cost) and unaligned (cost-incurring) substructures. Due to NP-hard nature of exact GED computation, GED approximations based on Graph Neural Network(GNN) have emerged. Existing GNN-based GED approaches typically learn node embeddings for each graph and then aggregate pairwise node similarities to estimate the final similarity. Despite their effectiveness, we identify a mismatch between this prevalent node-centric matching paradigm and the core principles of GED. This discrepancy leads to two critical limitations: (1) a failure to capture the global structural correspondence for optimal alignment, and (2) a misattribution of edit costs driven by spurious node level signals. To address these limitations, we propose GCGSim, a GED-consistent graph similarity learning framework centering on graph-level matching and substructure-level edit costs. Specifically, we make three core technical contributions. Extensive experiments on four benchmark datasets show that GCGSim achieves state-of-the-art performance. Our comprehensive analyses further validate that the framework effectively learns disentangled and semantically meaningful substructure representations.
title GED-Consistent Disentanglement of Aligned and Unaligned Substructures for Graph Similarity Learning
topic Machine Learning
Artificial Intelligence
Databases
url https://arxiv.org/abs/2511.19837