Journal of Xidian University ›› 2023, Vol. 50 ›› Issue (1): 168-176.doi: 10.19665/j.issn1001-2400.2023.01.019

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Attention spatial-temporal graph neural network for traffic prediction

GAN Ping1(),NONG Liping2,3(),ZHANG Wenhui4(),LIN Jiming1,2(),WANG Junyi1()   

  1. 1. School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China
    2. School of Telecommunications Engineering,Xidian University,Xi’an 710071,China
    3. College of Physics and Technology,Guangxi Normal University,Guilin 541001,China
    4. School of Computer Science and Information Security,Guilin University of Electronic Technology,Guilin 541004,China
  • Received:2021-10-12 Online:2023-02-20 Published:2023-03-21

Abstract:

With the development of urbanization,traffic prediction plays an important role in the application of traffic planning and urban management.However,in the task of traffic prediction,it is still a great challenge to capture the highly nonlinear and complex spatio-temporal dependencies of traffic data.In order to effectively capture the time dynamics and global spatial correlation of traffic data and satisfy both long-term and short-term prediction tasks,an attention based spatial-temporal graph neural network for traffic prediction is designed.First,the attention mechanism is introduced to adjust the importance of adjacent roads and non-adjacent roads,which is beneficial to integrating global spatial information.Then,the spatial-temporal correlations are captured by graph convolutional networks and gated linear units with extended causal convolution.Experimental results on two real data sets PeMSD7(M) and PEMS-BAY show that the network model can improve the accuracy of both long and short-term traffic prediction.

Key words: traffic prediction, spatial-temporal correlativity, mechanisms of attention, graph convolutional networks

CLC Number: 

  • TP391