The invention relates to the technical field of intelligent traffic, in particular to a highway service area traffic flow prediction method, a time-space diagram convolutional neural network model based on an attention mechanism belongs to an STGNN model based on CNNs, ChebNet diagram convolution and one-dimensional convolution along the time dimension are creatively combined, and the prediction problem of time-space traffic diagram data is solved. A structure multi-head self-attention module is designed, and road network topological structure information is extracted; designing a dynamic evolution graph convolution module, learning a new graph for each time slice, and adaptively and dynamically adjusting the correlation strength between nodes by using a self-attention mechanism; and designing a time multi-head self-attention module and time position embedding, and extracting time correlation. And a Transform structure is optimized, so that the Transs-STGNN has a more accurate long-term prediction capability. According to the method, the space-time correlation can be better extracted, and the prediction precision can be improved.

    本发明涉及智能交通技术领域,尤其涉及一种高速公路服务区车流量预测方法,基于注意力机制的时空图卷积神经网络模型属于基于CNNs的STGNN模型,创造性地将ChebNet图卷卷积和沿时间维度的一维卷积相结合,用于解决时空交通图数据的预测问题。设计结构多头自注意模块,提取路网拓扑结构信息;设计动态演化图卷积模块,为每个时间片学习一个新的图,并利用自注意机制自适应地动态调整节点之间的相关强度;设计时间多头自注意模块和时间位置嵌入,提取时间相关性。并通过优化Transformer结构,使得Trans‑STGNN有更准确的长期预测能力。本方法能够更好地提取时空相关性,并能提高预测精度。


    Access

    Download


    Export, share and cite



    Title :

    Expressway service area traffic flow prediction method


    Additional title:

    一种高速公路服务区车流量预测方法


    Contributors:
    JIANG DEHONG (author) / DUAN HONGLIN (author) / YANG JIANGUO (author) / XU HUA (author) / WANG ZHENHUA (author) / TENG ZHIWEI (author) / WANG YANAN (author) / WANG RAN (author) / CAI CAN (author) / MA HAO (author)

    Publication date :

    2023-08-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen



    Expressway service area traffic flow prediction method

    HUANG ZHENGLIN / OU BIYING / HUANG JIE et al. | European Patent Office | 2022

    Free access

    Expressway intelligent service area traffic flow prediction method and management method

    LUO XIANGSHENG / ZHAO YONG / QI WEI et al. | European Patent Office | 2024

    Free access

    Expressway traffic flow prediction method

    JIANG YUNLIANG / FAN JINBIN / ZHANG XIONGTAO et al. | European Patent Office | 2020

    Free access

    Expressway interleaving area traffic accident prediction method

    GUO YANYONG / ZHAO JINGYA / LIU PAN et al. | European Patent Office | 2021

    Free access

    Expressway service area traffic guidance method and system

    CHEN HUICHUAN / GAO SHENSHAN / CUI QUN et al. | European Patent Office | 2021

    Free access