Graph neural networks, as powerful deep learning tools to model graph-structured data, have demonstrated remarkable performance on numerous graph learning tasks. To counter the data noise and data scarcity issues in deep graph learning (DGL), increasing graph data augmentation research has been conducted lately. However, conventional data augmentation methods can hardly handle graph-structured data which is defined on non-Euclidean space with multi-modality. In this survey, we formally formulate the problem of graph data augmentation and further review the representative techniques in this field. Specifically, we first propose a taxonomy for graph data augmentation and then provide a structured review by categorizing the related work based on the augmented information modalities. Focusing on the two challenging problems in DGL (i.e., optimal graph learning and low-resource graph learning), we also discuss and review the existing learning paradigms which are based on graph data augmentation. Finally, we point out a few directions and challenges on promising future works.

本文对图数据增强技术及其在图神经网络领域中的应用进行了综述，提出了增强信息模态分类的分类法并概括了可靠图学习和低资源图学习中的代表性应用，并回顾了已有的相关文献。最后，我们指出了未来研究中的机遇和挑战。

深度图学习的数据增强：综述