Research On Location Decision Support System Of Commercial Sites In Middle ﹠ Small Towns

With China's rapid economic development, urbanization and urban expansion accelerated, however, city planning and rational distribution business to ensure the sound development of urban economy premise. As small and medium cities in population, city size and development of key industries and cities and so different, so, to determine the scale of commercial net sites and distribution are also different. For the current more than 600 small towns in China, its commercial net sites planning is not only necessary to establish its own development framework,and gradually form a reasonable sequence of land developmen, commercial networks have to pay attention to the unique nature of construction and planning,such as prominent local features and give full play to humanistic connotation of business center, which is also carrying out "scientific development, harmonical development" embodied. How scientific theories based on full use of the advantages of spatial information technology to research, analyze and manage network data and to provide a reasonable distribution of urban commercial network layout and planning, have become an urgent problem and a major challenge.GIS spatial data analysis and visualization of expression and decision support system data judgment,to compute the optimal solution and make the mutual integration of science and predictive power, the perfect solution to this problem.Firstly, from the impact of small city commercial network site factors, we compared small and medium cities and major cities in net sites'similarities and differences, and by way of expert advice to establish site factors and weight. The selection process is composed by two major parts----roughing and cocentration, the roughing process involves public transport convenience, road accessibility, the five factors of population estimates of the acquisition and operation; Concentration is selected on the basis of rough K-Means clustering based on the particle search algorithm. Finally, the use of AO + VB secondary development model, "small urban commercial network site Decision Support System". In a word, the main work and innovations in this article are done as follows:(1)Recent relevant studies in the construction of our network status in the town and country planning for medium and small urban commercial development an important directives,proposed the establishment of municipal, regional and community level of three levels of commercial network layout framework and roughing, contration technology line.(2)Comparison of small and medium cities and major cities in the factors affecting network similarities and differences,both qualitative and quantitative analysis methods, the establishment of influencing factors and the role of each factor score were calculated.(3)Discussion by high-resolution images in the local architectural features strong,, residents of small cities scattered distribution of population in urban areas for data acquisition and error analysis of the idea. The results show that the improved method of land use density of population estimates, the data accuracy can be applied to municipal and regional commercial network site area, and community-level population data because of its small size area can be obtained by field survey.(4)The K-Means cluster analysis algorithm into particles, while a "window" search method in the optimal position roughing region search, and location of Kaifeng City Commercial outlets empirical case study, simulation results with reality.(5)To Geodatabase based on small urban commercial network site development decision support system, the system covers five functions,including the data editing, vector data processing,raster data processing, PSO selected site operations and thematic map output function, while human-friendly interface and of operation allows the user to easily query various factors and the net site operation. Obtained through the above study, based on theories and the location of small city commercial network decision support system, combined with previous experience in commercial network site search results,with a strong operational.The system realizes the location of small city commercial network automation and intelligence with computer network data and network element data, and the construction of various types of data storage table is not only beneficial to the new network of query and analysis,is more conducive to the network later management and construction planning, compared to traditional operations and human experience,drawing more scientific and accurate location.