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arXiv · 2207.01960

A Safe Semi-supervised Graph Convolution Network

Zhi Yang·Yadong Yan·Haitao Gan·Jing Zhao·Zhiwei Ye
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Abstract

In the semi-supervised learning field, Graph Convolution Network (GCN), as a variant model of GNN, has achieved promising results for non-Euclidean data by introducing convolution into GNN. However, GCN and its variant models fail to safely use the information of risk unlabeled data, which will degrade the performance of semi-supervised learning. Therefore, we propose a Safe GCN framework (Safe-GCN) to improve the learning performance. In the Safe-GCN, we design an iterative process to label the unlabeled data. In each iteration, a GCN and its supervised version(S-GCN) are learned to find the unlabeled data with high confidence. The high-confidence unlabeled data and their pseudo labels are then added to the label set. Finally, both added unlabeled data and labeled ones are used to train a S-GCN which can achieve the safe exploration of the risk unlabeled data and enable safe use of large numbers of unlabeled data. The performance of Safe-GCN is evaluated on three well-known citation network datasets and the obtained results demonstrate the effectiveness of the proposed framework over several graph-based semi-supervised learning methods.

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Zhi Yang, Yadong Yan, Haitao Gan, Jing Zhao, Zhiwei Ye. 2022-07-05. A Safe Semi-supervised Graph Convolution Network. https://arxiv.org/abs/2207.01960

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