AutoGraph: Automated Graph Neural Network

• URL: http://arxiv.org/abs/2011.11288v1
• Date: Mon, 23 Nov 2020 09:04:17 GMT
• Title: AutoGraph: Automated Graph Neural Network
• Authors: Yaoman Li and Irwin King
• Abstract summary: We propose a method to automate the deep Graph Neural Networks (GNNs) design. In our proposed method, we add a new type of skip connection to the GNNs search space to encourage feature reuse. We also allow our evolutionary algorithm to increase the layers of GNNs during the evolution to generate deeper networks.
• Score: 45.94642721490744
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Graphs play an important role in many applications. Recently, Graph Neural Networks (GNNs) have achieved promising results in graph analysis tasks. Some state-of-the-art GNN models have been proposed, e.g., Graph Convolutional Networks (GCNs), Graph Attention Networks (GATs), etc. Despite these successes, most of the GNNs only have shallow structure. This causes the low expressive power of the GNNs. To fully utilize the power of the deep neural network, some deep GNNs have been proposed recently. However, the design of deep GNNs requires significant architecture engineering. In this work, we propose a method to automate the deep GNNs design. In our proposed method, we add a new type of skip connection to the GNNs search space to encourage feature reuse and alleviate the vanishing gradient problem. We also allow our evolutionary algorithm to increase the layers of GNNs during the evolution to generate deeper networks. We evaluate our method in the graph node classification task. The experiments show that the GNNs generated by our method can obtain state-of-the-art results in Cora, Citeseer, Pubmed and PPI datasets.

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