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生成式图自监督学习综述

A Survey of Generative Graph Self-Supervised Learning

  • 摘要: 生成式图自监督学习旨在利用图自身信息,通过设计预测任务或结构/特征重构任务生成监督信号,进而在结构和特征上生成与原始图数据相似的新图。该方法能有效解决数据稀缺或标签不足等挑战,引起了研究者的广泛关注。该领域虽然取得了显著进展,但仍缺乏系统性的梳理和归纳。为此,本文总结归纳了近年来生成式图自监督学习的研究成果。首先,本文介绍了生成式图自监督学习的背景知识,并提供了形式化定义;其次,梳理了生成式图自监督学习中的图自编码器,并对图掩码自编码器进行了归类和分析;再次,本文汇总了常用的数据集和评价指标。最后,探讨了当前生成式图自监督学习面临的挑战,并展望了未来研究方向。

     

    Abstract: Generative graph self-supervised learning is designed to harness the inherent information within graphs by crafting predictive tasks or structure/feature reconstruction tasks to produce supervisory signals. This process results in the generation of new graphs that closely mimic the original graph data in both structure and features. Thus, it has shown superior performance in addressing challenges such as data scarcity or insufficient labeling, attracting widespread attention from researchers. Despite significant progress in this field, there is still a lack of systematic organization and summarization. To this end, this paper aims to make a comparative study on the research achievements of generative graph self-supervised learning in recent years. It first introduces relevant background knowledge and provides formal definitions. Subsequently, it sorts out graph autoencoders in generative graph self-supervised learning and categorizes and analyzes graph mask autoencoders. In addition, this paper compiles commonly used datasets and evaluation metrics. Finally, it discusses the current challenges faced by generative graph self-supervised learning and offers prospects for future research directions.

     

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