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arXiv 2405.04773cs.LGcs.AIcs.IRcs.SI
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超图增强的双半监督图分类

Hypergraph-enhanced Dual Semi-supervised Graph Classification

School of Statistics and Data Science, Nankai University(南开大学统计与数据科学学院);Department of Computer Science, University of California, Los Angeles(加利福尼亚大学洛杉矶分校计算机系)

Wei Ju, Zhengyang Mao, Siyu Yi, Yifang Qin, Yiyang Gu, Zhiping Xiao, Yifan Wang, Xiao Luo, Ming Zhang

AI总结:

提出超图增强双框架HEAL,通过超图结构学习和线图交互捕捉高阶依赖,结合关系一致性学习,有效解决半监督图分类中标记数据稀缺问题。

摘要:

本文研究了半监督图分类问题,其目标是在标记图数量有限、未标记图数量丰富的场景中准确预测图的类别。尽管图神经网络(GNNs)具有强大的能力,但它们通常需要大量昂贵的标记图,而丰富的未标记图未能得到有效利用。此外,GNNs本质上局限于通过消息传递机制编码局部邻域信息,因此缺乏对节点间高阶依赖关系建模的能力。为应对这些挑战,我们提出了一种名为HEAL的超图增强双框架,用于半监督图分类,该框架分别从超图和线图的角度捕捉图语义。具体而言,为了更好地探索节点间的高阶关系,我们设计了一种超图结构学习,以自适应地学习超越成对关系的复杂节点依赖。同时,基于学习到的超图,我们引入线图来捕捉超边之间的交互,从而更好地挖掘潜在的语义结构。最后,我们开发了关系一致性学习,以促进两个分支之间的知识迁移并提供更好的相互指导。在真实世界图数据集上的大量实验验证了所提方法相对于现有最先进方法的有效性。

英文摘要:

In this paper, we study semi-supervised graph classification, which aims at accurately predicting the categories of graphs in scenarios with limited labeled graphs and abundant unlabeled graphs. Despite the promising capability of graph neural networks (GNNs), they typically require a large number of costly labeled graphs, while a wealth of unlabeled graphs fail to be effectively utilized. Moreover, GNNs are inherently limited to encoding local neighborhood information using message-passing mechanisms, thus lacking the ability to model higher-order dependencies among nodes. To tackle these challenges, we propose a Hypergraph-Enhanced DuAL framework named HEAL for semi-supervised graph classification, which captures graph semantics from the perspective of the hypergraph and the line graph, respectively. Specifically, to better explore the higher-order relationships among nodes, we design a hypergraph structure learning to adaptively learn complex node dependencies beyond pairwise relations. Meanwhile, based on the learned hypergraph, we introduce a line graph to capture the interaction between hyperedges, thereby better mining the underlying semantic structures. Finally, we develop a relational consistency learning to facilitate knowledge transfer between the two branches and provide better mutual guidance. Extensive experiments on real-world graph datasets verify the effectiveness of the proposed method against existing state-of-the-art methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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