Neural Graduated Assignment for Maximum Common Edge Subgraphs

• URL: http://arxiv.org/abs/2505.12325v1
• Date: Sun, 18 May 2025 09:43:35 GMT
• Title: Neural Graduated Assignment for Maximum Common Edge Subgraphs
• Authors: Chaolong Ying, Yingqi Ruan, Xuemin Chen, Yaomin Wang, Tianshu Yu,
• Abstract summary: This paper introduces Neural Graduated Assignment'' (NGA), a simple, scalable, unsupervised-training-based method.<n>We show that NGA significantly improves computation time and scalability on large instances.<n>The introduction of NGA marks a significant advancement in the computation of MCES and offers insights into other assignment problems.
• Score: 11.555673504442755
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Maximum Common Edge Subgraph (MCES) problem is a crucial challenge with significant implications in domains such as biology and chemistry. Traditional approaches, which include transformations into max-clique and search-based algorithms, suffer from scalability issues when dealing with larger instances. This paper introduces ``Neural Graduated Assignment'' (NGA), a simple, scalable, unsupervised-training-based method that addresses these limitations by drawing inspiration from the classical Graduated Assignment (GA) technique. Central to NGA is stacking of neural components that closely resemble the GA process, but with the reparameterization of learnable temperature into higher dimension. We further theoretically analyze the learning dynamics of NGA, showing its design leads to fast convergence, better exploration-exploitation tradeoff, and ability to escape local optima. Extensive experiments across MCES computation, graph similarity estimation, and graph retrieval tasks reveal that NGA not only significantly improves computation time and scalability on large instances but also enhances performance compared to existing methodologies. The introduction of NGA marks a significant advancement in the computation of MCES and offers insights into other assignment problems.

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