计算机科学
图形
对抗制
稳健性(进化)
人工智能
人工神经网络
节点(物理)
理论计算机科学
机器学习
生物化学
结构工程
基因
工程类
化学
作者
Zepeng Zhang,Songtao Lu,Zengfeng Huang,Ziping Zhao
出处
期刊:Cornell University - arXiv
日期:2022-01-01
被引量:2
标识
DOI:10.48550/arxiv.2210.01002
摘要
The graph neural network (GNN) models have presented impressive achievements in numerous machine learning tasks. However, many existing GNN models are shown to be vulnerable to adversarial attacks, which creates a stringent need to build robust GNN architectures. In this work, we propose a novel interpretable message passing scheme with adaptive structure (ASMP) to defend against adversarial attacks on graph structure. Layers in ASMP are derived based on optimization steps that minimize an objective function that learns the node feature and the graph structure simultaneously. ASMP is adaptive in the sense that the message passing process in different layers is able to be carried out over dynamically adjusted graphs. Such property allows more fine-grained handling of the noisy (or perturbed) graph structure and hence improves the robustness. Convergence properties of the ASMP scheme are theoretically established. Integrating ASMP with neural networks can lead to a new family of GNN models with adaptive structure (ASGNN). Extensive experiments on semi-supervised node classification tasks demonstrate that the proposed ASGNN outperforms the state-of-the-art GNN architectures in terms of classification performance under various adversarial attacks.
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