Graph Neural Networks: AutoML
Graph Neural Networks: Foundations, Frontiers, and Applications(2022)
Abstract
Graph neural networks (GNNs) are efficient deep learning tools to analyze networked data. Being widely applied in graph analysis tasks, the rapid evolution of GNNs has led to a growing number of novel architectures. In practice, both neural architecture construction and training hyperparameter tuning are crucial to the node representation learning and the final model performance. However, as the graph data characteristics vary significantly in the real-world systems, given a specific scenario, rich human expertise and tremendous laborious trials are required to identify a suitable GNN architecture and training hyperparameters. Recently, automated machine learning (AutoML) has shown its potential in finding the optimal solutions automatically for machine learning applications. While releasing the burden of the manual tuning process, AutoML could guarantee access of the optimal solution without extensive expert experience. Motivated from the previous successes of AutoML, there have been some preliminary automated GNN (AutoGNN) frameworks developed to tackle the problems of GNN neural architecture search (GNN-NAS) and training hyperparameter tuning. This chapter presents a comprehensive and up-to-date review of AutoGNN in terms of two perspectives, namely search space and search algorithm. Specifically, we mainly focus on the GNN-NAS problem and present the Kaixiong Zhou Department of Computer Science and Engineering, Texas A&M University, e-mail: zkxiong@
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