Informative Graph Structure Learning

• URL: http://arxiv.org/abs/2605.16809v1
• Date: Sat, 16 May 2026 04:46:59 GMT
• Title: Informative Graph Structure Learning
• Abstract summary: We propose a novel Informative Graph Structure Learning method (InGSL)<n>InGSL considers both similarity and diversity in edge construction by incorporating a mutual-information-guided learning strategy.<n>We demonstrate that InGSL achieves significant performance improvements at a reduced number of edges.
• Score: 13.73614602397099
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The quality of graph-structured data is fundamental to the success of modern graph analysis techniques such as Graph Neural Networks (GNNs). However, real-world graph data is often suboptimal, suffering from issues such as noise and incomplete connections. Graph Structure Learning (GSL) has emerged as a promising technique that adaptively optimizes node connections. However, we observe that the effectiveness of GSL often comes at the cost of a dramatic expansion in edge count, resulting in significant storage and computational overhead. In this work, we reveal that this limitation stems from the prevalent use of similarity-based edge construction, which predominantly connects highly similar neighbors based on their embeddings, introducing substantial structure redundancy. To address this, we propose a novel Informative Graph Structure Learning method (InGSL), which jointly considers both similarity and diversity in edge construction by incorporating a mutual-information-guided learning strategy. Notably, InGSL serves as a plug-in module that can be seamlessly integrated into existing GSL frameworks. Through extensive experiments on six representative GSL methods, we demonstrate that InGSL achieves significant performance improvements at a reduced number of edges.

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