基于复杂网络的城市道路重要度评价及路网自动综合方法

利用复杂网络理论,构建城市复杂路网模型,基于该模型从道路的结构和功能特征角度,以连接度、介中心和接近度为度量指标定义道路重要度评价模型,并顾及路网的整体形态及路网的拓扑连通性,提出基于复杂网络理论的路网综合算法。为检验方法有效性,针对成都市道路网络进行实验分析。实验结果表明,该道路重要度评价模型较好地反映道路在整个路网结构和功能上的重要程度,复杂路网综合算法能较好地保持原始路网的整体形态结构特征。

Auto generalization approach and importance evaluation of urban roads based on complex networks

Using the complex network theory ,an urban complex road network model is constructed .On the basis of this model ,from the point of the structural and functional properties of roads ,the evaluation model of road importance is defined with the measures of node degree , betweenness centrality and closeness centrality .As the global morphology and topological connectivity of road networks are targetted , the generalization approach based on the complex networks theory is presented .In order to testify the efficiency of this method ,experimental analysis is carried out with taking the Chengdu street networks as a case study .T he results show that ,the evaluation model of road importance reflects the significance of the road within the whole street network on structural and functional aspects ,and the generalization approach of complex road networks retains the global morphological structural characteristic of the original road network .