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Title	Spatio-Temporal Graph Neural Network For Traffic Prediction Based On Adaptive Neighborhood Selection
ID_Doc	52565
Authors	Sun H.; Tang X.; Lu J.; Liu F.
Year	2024
Published	Transportation Research Record, 2678, 6
DOI	http://dx.doi.org/10.1177/03611981231198851
Abstract	Traffic prediction is critical to intelligent transportation and smart cities. The prediction performance of many existing traffic prediction models is limited by the fixed original graph structure and inappropriate spatio-temporal dependency extraction. For this situation, this paper proposes a spatio-temporal graph neural network based on adaptive neighborhood selection (STGNN-ANS). To obtain more flexible graph structures, STGNN-ANS designs a neighbor selection mechanism to generate a new graph structure by filtering inappropriate neighbors. To further capture the spatio-temporal dependence of traffic data, a spatio-temporal serial module of STGNN-ANS adopts the bidirectional learning manner of bidirectional long short-term memory (BiLSTM) and the graph convolution network (GCN) enhanced by self-attention mechanism to reach excellent prediction accuracy in both short-range and long-range scenarios. In this paper, a new baseline comprehensive comparison metric (BCCM) is invented to cope with the complexity in the comparative analysis of large numbers of experimental results. Many experiments have been performed on four real-world traffic datasets, and the results show that the comprehensive prediction performance of STGNN-ANS is better than previous models. © National Academy of Sciences: Transportation Research Board 2023.
Author Keywords	artificial intelligence; artificial intelligence and advanced computing applications; data and data science; deep learning; traffic predication

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