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Multiview Graph Contrastive Learning Based on Learnable Graph Augmentation

delete2026-02-18
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PRE
AI
孙
孙登第 (Dengdi Sun)
W
Weilong Gong
Z
Z. Wu
B
Bin Luo
Z
Zhuanlian Ding
DOI:10.1109/TCSS.2026.3660965delete
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摘要

摘要

En 中文
图对比学习近年来在图表示学习领域获得了显著关注。大多数图对比学习方法通过增强输入图生成两个图视图,并最大化其表示的一致性。然而,由于缺乏对图数据的先验知识,现有的图增强方法通常生成低质量视图,这会破坏图的核心结构信息,从而影响模型的学习。根本限制在于此类增强的语义无关性,无法适应底层数据分布和模型演变的训练状态。此外,现有对比学习方法通常采用单一的对比策略,并依赖大量的相似度计算,这使得难以充分捕捉图中的多样化特征。为解决这些限制,我们提出了一种基于可学习图增强的多视图图对比学习方法(MGLGA)。具体而言,该方法放弃了传统的随机图增强,通过动态特征学习构建视图,并利用图特征学习器和后处理模块生成特征视图,从而聚焦于图的基本结构特征,同时最小化对视图生成的干扰。这种可学习的范式确保增强视图保持高语义保真度,并在训练过程中提供自适应的、课程式的学习信号,从而理论上促进更好的泛化。此外,我们设计了三分支结构,通过节点级和图级对比捕捉图的细粒度和粗粒度知识。我们进一步通过对比目标优化开发了一种结构感知的组判别损失,增强了模型捕捉图结构模式的能力。全面的评估表明,该方法在多个下游基准上取得了最先进的表现。
Keyword:
Graph contrastive learning (GCL)
node classification
node clustering
self-supervised learning

期刊

IEEE Transactions on Computational Social Systems 封面图
IEEE Transactions on Computational Social Systems
IF:
4.9
论文数:
622
被引数:
6.8K

机构

A
anhui university
学者数:
1.9W
论文数: 1.2W
被引数: 24
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