Empirical Study And Modeling Of Spatial Facility Network

Complex network system consisting with nodes and edges relate spatial element closely. Transportation network, Infrastructure network, Internet network, neural network and so on their internal evolution mechanism and spatial factor is closely linked. Only focusing on the topological structure cannot fully present situation of the whole network. Our work is particularly concerned about geographical factors, population factors, the space under the influence of the network. This paper reviews the domestic and international scholars in recent years, networks in space and related empirical results of an important model, special attention to the evolution of the network space factors, such as population distribution, economic and social factors.2009 South Korean scholars of urban facilities and South Korea against the United States the distribution of urban facilities, a lot of empirical research has been on population density and infrastructure density of a power index. However, the study only stay in the present circumstances of the two distribution facilities in the research, the study did not include a time window of view, development can not be speculated that changes in the power index for this, our research work and achievements as follows:1. We are on the network and the Yearbook of the city collected a lot of data, the distribution of urban facilities in the study of population density and the relationship between density based on the Top 300 Chinese cities in the former study, the population density of urban facilities in China Density done a lot of empirical research the case, the results obtained with the United States, the situation can be relatively more than urban facilities.2. Against the United States is only concerned about the empirical study of the current density and the United States population density of urban facilities, lists several facilities, power index, not the time factor into account, we studied the time span of 17 years, China exponent of several facilities in the city changes were compared with the United States, shows that the Chinese city facilities are still in a constant stage of rapid development.3. After the model based on the basis of previously established data model for China, were simulated. Results of simulation data were consistent with the empirical analysis, and the concept of Voronoi cell situation, and so the distribution of facilities in a simulation, and the distribution of the population density to make a comparison. Finally, recommendations for future work and prospects.In this study by the National Natural Science Foundation support, the project name "opening space in a weighted network evolution and optimization of topology design", item number:11075057.