The invention provides a path travel time distribution function estimation method based on road section data, which belongs to the technical field of traffic engineering and comprises the following steps: estimating a fourth moment of path travel time by using road section travel time data based on a theoretical correlation coefficient of the road section data; the fourth moment of the estimated path travel time is corrected to improve the estimation precision; and taking the corrected path travel time four-order moment as input, and adopting an asymptotic expansion model to obtain a path travel time distribution function. According to the method, the universality is high when the path travel time distribution function is estimated, travel time historical data of a complete path level is not needed, it is not needed to assume that the road sections or the paths obey a specific probability distribution function either, and the correlation between the road section travel time is explicitly considered. Meanwhile, the method is low in calculation complexity, the accuracy of the estimated path travel time distribution function is high, and a reliable technology is provided for estimating the path travel time distribution function in a large-scale road traffic network.

    本发明提供一种基于路段数据的路径行程时间分布函数估计方法,属于交通工程技术领域,包括使用路段行程时间数据,基于路段数据的理论相关系数,估计出路径行程时间的四阶矩;对估计出的路径行程时间的四阶矩进行修正,以提升估计精度;以修正后的路径行程时间四阶矩为输入,采用渐近展开式模型,得到路径行程时间分布函数。本发明在估计路径行程时间分布函数时普适性强,不需要完整路径层面的行程时间历史数据,也不需要假设路段或路径服从特定的概率分布函数,且显性考虑了路段行程时间之间的相关性。同时,本方法计算复杂度低,估计得到的路径行程时间分布函数准确度高,为大规模道路交通网络中的路径行程时间分布函数估计提供可靠的技术。


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    Titel :

    Path travel time distribution function estimation method based on road section data


    Weitere Titelangaben:

    一种基于路段数据的路径行程时间分布函数估计方法


    Beteiligte:
    XU XIANGDONG (Autor:in) / JIAN ZIHAN (Autor:in)

    Erscheinungsdatum :

    10.10.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / 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 / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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