Traffic prediction is a challenging task as the traffic flow is influenced by many seasonal, stochastic, and structural factors. In addition, the spatial and temporal distribution of traffic flow can induce direct and indirect congestion propagation patterns. While existing works have attempted to model spatial-temporal graphs to capture the spatial correlations and temporal dependencies, they fail to consider congestion propagation behavior among road segments. In this paper, we propose a novel traffic prediction model that takes into account the congestion propagation tendencies to improve prediction accuracy. A novel diffusion graph convolution network model is developed to capture the spatial traffic correlations while considering the congestion propagation behavior. Our model also jointly learns the importance of seasonal traffic speed correlations, road contextual information (structural information), and stochastic factors (external factors) through an attention layer. Experimental results on real-world data-set demonstrate the superiority of our method over state-of-the-art traffic prediction techniques, and confirm the significance of congestion propagation behavior in traffic prediction.


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    Title :

    Learning Congestion Propagation Behaviors for Traffic Prediction


    Contributors:
    Yidan, Sun (author) / Peilan, He (author) / Guiyuan, Jiang (author) / Lam, Siew-Kei (author)


    Publication date :

    2021-09-19


    Size :

    982610 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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