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UNDERSTANDING URBAN TRAFFIC FLOW CHARACTERISTICS FROM THE NETWORK CENTRALITY PERSPECTIVE AT DIFFERENT GRANULARITIES

机译:了解不同粒度的网络中心地位的城市交通流特征

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In this study, we analyze urban traffic flow using taxi trajectory data to understand the characteristics of traffic flow from the network centrality perspective at point (intersection), line (road), and area (community) granularities. The entire analysis process comprises three steps. The first step utilizes the taxi trajectory data to evaluate traffic flow at different granularities. Second, the centrality indices are calculated based on research units at different granularities. Third, correlation analysis between the centrality indices and the corresponding urban traffic flow is performed. Experimental results indicate that urban traffic flow is relatively influenced by the road network structure. However, urban traffic flow also depends on the research unit size. Traditional centralities and traffic flow exhibit a low correlation at point granularity but exhibit a high correlation at line and area granularities. Furthermore, the conclusions of this study reflect the universality of the modifiable areal unit problem.
机译:在这项研究中,我们使用出租车轨迹数据分析城市交通流量,了解从网络中心的透视(交叉路口),线(道路)和区域(社区)粒度的交通流量的特征。整个分析过程包括三个步骤。第一步利用出租车轨迹数据来评估不同粒度的交通流量。其次,基于不同粒度的研究单位计算了中心点。第三,执行中心指数与相应的城市交通流量之间的相关分析。实验结果表明,城市交通流量相对受道路网络结构的影响。然而,城市交通流量也取决于研究单位规模。传统的集合和交通流量在点粒度下表现出低的相关性,但在线和面积粒度表现出高的相关性。此外,本研究的结论反映了可修改的区域问题的普遍性。

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