A detection method of key road-sections based on Ricci flow is provided and includes: building a weighted road network according to static road network data and actual traffic flow data; calculating initial values of Olivier Ricci curvature at different times; obtaining a weight system of making edges of the weighted road network be with a same value of Olivier Ricci curvature by a Ricci flow iterative process; and calculating direction and degree of weight change of each of the edges corresponding to road-sections, and setting a threshold to extract key road-sections. The method solves problems that the existing methods analyze the key road-sections from the topological structure of the road network without fully considering the actual distribution and transmission characteristics of the traffic flow in the network, is simple and easy; and the detection result more meet the traffic distribution and the flow of the actual road-sections.


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    Title :

    Detection method of key road-sections based on ricci flow


    Contributors:
    LI HAIFENG (author) / PENG JIAN (author) / LI PENGLONG (author) / MA ZEZHONG (author) / DING YI (author) / ZHANG ZELIE (author) / LUO DING (author) / ZHU JIAWEI (author) / HE SILU (author) / LI YAN (author)

    Publication date :

    2024-07-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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