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Graph Convolution Networks with manifold regularization for semi-supervised learning
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DOI：10.1016/j.neunet.2020.04.016.png)
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In recent times, Graph Convolution Networks (GCN) have been proposed as a powerful tool for graph-based semi-supervised learning. In this paper, we introduce a model that enhances label propagation of Graph Convolution Networks (GCN). More precisely, we propose GCNs with Manifold Regularization (GCNMR). The objective function of the proposed GCNMR is composed by a supervised term and an unsupervised term. The supervised term enforces the fitting term between the predicted labels and the known labels. The unsupervised term imposes the smoothness of the predicted labels of the whole data samples. By learning a Graph Convolution Network with the proposed objective function, we are able to derive a more powerful semi-supervised learning. The proposed model retains the advantages of the classic GCN, yet it can improve it with no increase in time complexity. Experiments on three public image datasets show that the proposed model is superior to the GCN and several competing existing graph-based semi-supervised learning methods. (c) 2020 Elsevier Ltd. All rights reserved.
Keyword:
Graph-based semisupervised learning
Graph Convolution Networks (GCN)
Label prediction
Manifold regularization
Semisupervised image classification
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