中文摘要：

以北京浩沙健身连锁俱乐部为例，尝试利用公众在大众点评网、新浪微博等网络社区中发布的关注度、评价等作为加权因子，分析连锁网点之间的竞争状态，建立了一个基于互联网信息的加权因子计算模型，计算各连锁店的市场竞争域，结果显示互联网空闯信息能够对连锁店之间的空间竞争产生指示作用，各分店表现出明显的竞争力差异；提出对加权Voronoi图区位意义上的地理学新解释：它不仅反映连锁店基本市场域，而且其边线弯曲度和单元面积的变化还可折射各连锁店在互联网空间中的吸引力差异。

英文摘要：

As a new way of modern commercial operation model, commercial chain stores have a tremendous impact on regional economic development. The problems, such as the consumption patterns of seeking far away and neglecting what lies at hand, the phenomenon of living and working in different places, the impact of electronic social networks for the traditional commercial model make the practical significance of the mar- ket field＇s division by using the traditional weighted （availability, network scale, etc.） Voronoi diagram de- creased obviously. This paper aims to study the impact of Intemet data on the competition of chain stores and analyze the competitive situation among chain stores by trying to use the public＇s concern level and evaluation in the Internet as the weighting factors which can reflect the consumer preference, and a calculating model based on the weighting factors of the Internet information is established; It also proposes a new geographical interpretation in terms of the location of the weighted Voronoi diagram to describe the spatial characteristics of competitive environment. The results showed that the Internet space exerts a great influence upon the sand-ho fitness chains, and also reveals that the competitive differences are obviously among the branching stores, the spatial competitiveness of urban and explanation in geography of Voronoi diagram may instruct the consumption attraction overcoming distance block, thus can make up for traditional weighted method which did not consider consumer preferences and shopping habits and result in not enough to express the partition of competition field. The study on spatial competition analysis of commercial chain stores which based on Inter- net information dynamically get the concern level of consumer to commerce, make commercial study more practical, and provides a new idea and method for the commercial decisions and organizations of the com- mercial network.