The invention discloses a traffic abnormal flow causal detection method and device, and the method comprises the steps: carrying out the region segmentation of a city region, obtaining a city region node graph, building a link between nodes according to the obtained city flow data, achieving the monitoring of the flow changes of other regions of a city through the link, and achieving the monitoring of the flow changes of other regions of the city. A space-time abnormal value is obtained by calculating a distance value of a link, so that the space-time abnormal value is calculated through an abnormal cause fruit tree algorithm to obtain an abnormal cause and effect graph, and normal flow and abnormal flow are distinguished in combination with a normal state cause and effect graph in a normal flow state; by means of the method, abnormal change characteristics of traffic flow caused by space-time abnormal values can be captured, causal testing of the abnormal values and transitivity along with time change are achieved, potential interaction between different urban areas and roads is revealed, effective perception of urban traffic states is promoted, and more accurate decision making is facilitated.

    本发明公开一种交通异常流量因果检测方法及设备,通过将城市区域进行区域分割得到城市区域节点图后,根据获取到的城市流量数据在节点与节点之间创建链接,通过链接实现城市区域流量变化对城市其他区域流量变化的监控,并通过计算链接的距离值得到时空异常值,从而通过异常因果树算法对时空异常值进行计算得到异常因果图,以及结合流量正常状态下的常态因果图,将常态与异常情况的下流量区分,能够捕捉到由于时空异常值所导致的交通流量的异常变化特征,实现对异常值的因果检验以及随时间变化的传递性,揭示了不同城市区域以及道路之间潜在的相互作用,促进对城市交通状态的有效感知并有利于更精准的决策。


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    Title :

    Traffic abnormal flow causal detection method and device


    Additional title:

    一种交通异常流量因果检测方法及设备


    Contributors:
    SONG XUAN (author) / GAO HAOTIAN (author) / FAN ZIPEI (author) / HONG XUEHAI (author) / WEI-TIAN YUNXI (author)

    Publication date :

    2023-04-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / G06V / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS




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