高级检索

从分布失衡到质量缺陷:鲁棒图表示学习方法综述

From Distribution Imbalance to Quality Defects: A Survey of Robust Graph Representation Learning

  • 摘要: 图作为一种重要的非欧几里得数据结构,能够通过节点和边的交互建模现实世界中的各类实体及其复杂关联关系,在社交网络分析、引文网络挖掘、交通流量建模及金融风控等众多领域得到了广泛应用。图表示学习作为挖掘图数据价值的核心,旨在将图中的节点、边或子图映射为低维稠密向量,并尽可能地保留图中的结构和属性信息,为节点分类、链路预测等任务提供高质量的表示。近年来,基于图深度学习的图表示学习方法虽取得了显著进展,但其性能高度依赖于输入数据的质量。然而,现实世界中的复杂图数据普遍存在分布失衡与质量缺陷问题,如类别不平衡、拓扑不平衡、标签稀疏及噪声干扰等。目前该领域缺少对鲁棒图表示学习方法的系统梳理与归纳。因此,本文旨在整理近年来面向上述挑战的鲁棒图表示学习方法。本文首先介绍相关背景知识,并提供形式化定义。随后,梳理针对类别不平衡、拓扑不平衡、标签稀疏及噪声干扰问题的鲁棒图表示学习方法。最后,探讨当前鲁棒图表示方法所面临的挑战,并对未来的研究方向提出展望。

     

    Abstract: Graphs, as an important non-Euclidean data structure, are capable of modeling various entities and their complex relationships in the real world through interactions between nodes and edges. They have been widely applied in numerous domains, including social network analysis, citation network mining, traffic flow modeling, and financial risk control. Graph representation learning, which is central to mining the value of graph data, aims to map nodes, edges, or subgraphs into low-dimensional, dense vectors while preserving the structural and attribute information within the graph, providing high-quality representations for downstream tasks such as node classification and link prediction. In recent years, although deep learning-based graph representation learning has achieved significant progress, their performance is highly dependent on the quality of the input data. However, complex graph data suffer from distribution imbalances and quality defects in real-world scenarios, such as class imbalance, topological imbalance, label sparsity, and noise interference. Currently, there is a lack of systematic reviews and summaries on robust graph representation learning methods. Therefore, this paper aims to organize recent robust graph representation learning methods that address the aforementioned challenges. We first introduce relevant background knowledge and provide formal definitions. Subsequently, we review robust graph representation learning methods targeting class imbalance, topological imbalance, label sparsity, and noise interference. Finally, we discuss the current challenges faced by robust graph representation methods and prospect future research directions.

     

/

返回文章
返回