The invention belongs to the field of intelligent traffic, and particularly relates to a short-time traffic flow prediction method based on a space-time convolutional network. Comprising the following steps: acquiring traffic data from a traffic gate; calculating traffic checkpoint activeness according to the traffic data; extracting hidden features of the checkpoint nodes and fusing the traffic checkpoint activeness to obtain a hidden information matrix; generating a self-adaptive adjacency matrix according to the hidden information matrix, and inputting the self-adaptive adjacency matrix into a self-adaptive graph convolutional network module for processing to obtain initial traffic flow characteristics; processing the initial traffic flow characteristics by adopting a BiGRU network to obtain traffic space-time attribute characteristics; extracting external attribute features and generating an augmented matrix; inputting the augmented matrix into a BiGRU network and processing the augmented matrix by adopting an attention mechanism to generate an attention weight; predicting traffic flow according to the traffic time-space attribute characteristics and the attention weight to obtain a traffic flow prediction result; the traffic flow can be accurately predicted, and the method has a wide application prospect.

    本发明属于智能交通领域,具体涉及一种基于时空卷积网络的短时交通流量预测方法;包括:从交通卡口处获取交通数据;根据交通数据计算交通卡口活跃度;提取卡口节点的隐藏特征并融合交通卡口活跃度,得到隐藏信息矩阵;根据隐藏信息矩阵生成自适应邻接矩阵,将其输入到自适应图卷积网络模块进行处理,得到初始交通流量特征;采用BiGRU网络对初始交通流量特征进行处理,得到交通时空属性特征;提取外部属性特征并生成增广矩阵;将增广矩阵输入到BiGRU网络并采用注意力机制进行处理,生成注意力权重;根据交通时空属性特征和注意力权重预测交通流量,得到交通流量预测结果;本发明可实现对交通流量的准确预测,具有广阔的应用前景。


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    Title :

    Short-term traffic flow prediction method based on space-time convolutional network


    Additional title:

    一种基于时空卷积网络的短时交通流量预测方法


    Contributors:
    JIA CHAOLONG (author) / KANG ZHEYI (author) / PENG GANG (author) / WANG RONG (author) / XIAO YUNPENG (author)

    Publication date :

    2023-11-10


    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



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