The invention discloses a short-term traffic flow prediction method based on a three-stage model, belongs to the field of intelligent traffic systems, and provides a VMD-GCN-GRU model to realize short-term prediction of traffic data. Compared with an existing short-time traffic flow prediction method, the method has the advantages that by conducting Var i at i ona lMode Decompos it i on, VMD on road network traffic data, most noise can be weakened, the non-stationarity of original signals can be effectively reduced, multiple sets of intrinsic mode functions (I ntr i ns i c Mode Funct i on, I MF) and residual errors are obtained through decomposition, the decomposed I MF and residual errors with similar center frequencies are sequentially input into a GCN model and a GRU model for prediction, and the obtained prediction result is reconstructed to obtain a final prediction result. Experiments show that compared with other deep learning prediction methods, the method has the advantage that the prediction precision based on the VMD-GCN-GRU model is greatly improved.

    一种基于三阶段模型的短时交通流预测方法属于智能交通系统领域,本发明提出了VMD‑GCN‑GRU模型,实现对交通数据的短时预测。与现有的短时交通流预测方法相比,通过对路网交通数据进行变分模态分解(Var i at i ona lMode Decompos it i on,VMD),可以削弱大部分噪声,有效降低原始信号的非平稳性,分解得到多组本征模态函数(I ntr i ns i c Mode Funct i on,I MF)和残差,把分解后的具有相似中心频率的I MF和残差依次输入GCN与GRU模型中进行预测,将得到的预测结果进行重构,从而得到最终的预测结果。实验表明,基于VMD‑GCN‑GRU模型的预测精度相比于其它深度学习预测方法有了较大的提升。


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    Titel :

    Short-term traffic flow prediction method based on three-stage model


    Weitere Titelangaben:

    一种基于三阶段模型的短时交通流预测方法


    Beteiligte:
    KONG DEHUI (Autor:in) / QIU PENGFEI (Autor:in) / WANG SHAOFAN (Autor:in) / YIN BAOCAI (Autor:in)

    Erscheinungsdatum :

    14.05.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / 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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