The invention relates to a traffic flow anomaly detection method and device, computer equipment and a storage medium. Comprising the following steps: acquiring current traffic flow time sequences corresponding to a plurality of grid regions included in a to-be-detected region and current adjacency matrixes corresponding to the plurality of grid regions; according to the similarity between the current traffic flow time sequences of the grid regions, updating the current adjacency matrix to obtain an updated adjacency matrix; aggregating all the current traffic flow time sequences corresponding to the elements of which the element values are target values in the updated adjacent matrix to obtain aggregated features; inputting the aggregation features into the current variational auto-encoder, and outputting reconstructed aggregation features; repeating the above steps until the obtained reconstruction error accords with a training ending condition, and obtaining a trained target adjacency matrix and a target variational auto-encoder; and performing anomaly detection on the traffic flow of the to-be-detected area based on the target adjacency matrix and the target variational auto-encoder. The method can improve the anomaly detection accuracy.

    本申请涉及一种交通流量异常检测方法、装置、计算机设备和存储介质。包括:获取待检测区域包括的多个网格区域各自对应的当前交通流量时间序列和多个网格区域对应的当前邻接矩阵;根据各个网格区域的当前交通流量时间序列之间的相似度,更新当前邻接矩阵,得到更新的邻接矩阵;对更新的邻接矩阵中元素值为目标值的元素对应的所有当前交通流量时间序列进行聚合,得到聚合特征;将聚合特征输入当前变分自编码器,输出重构的聚合特征;重复前述步骤,直至得到的重构误差符合训练结束条件,得到训练完成的目标邻接矩阵和目标变分自编码器;基于目标邻接矩阵和目标变分自编码器,对待检测区域的交通流量进行异常检测。本方法能够提高异常检测准确度。


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    Title :

    Traffic flow anomaly detection method and device, computer equipment and storage medium


    Additional title:

    交通流量异常检测方法、装置、计算机设备和存储介质


    Contributors:
    JING QIANG (author) / GAO YANG (author) / LI SHULIANG (author)

    Publication date :

    2023-12-19


    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



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