基于关键词聚类技术的主题地图构建研究——以地理信息可视化领域为例

Research on Thematic Maps Based on Technology of Keywords Clustering—Taking GIS Visualization as an Example

利用共词分析法对2001及2008两年间地理信息系统可视化领域文献关键词分别进行了统计。统计结果经过映射标准化预处理生成了共频矩阵及相关矩阵。借助专业统计分析软件SPSS的分析及可视化表达功能,绘制出可视化图,然后利用地理信息系统软件MapInfo,为可视化图添加文献信息,形成信息层并最终生成主题地图。在主题地图的生成过程中,简要介绍了主题地图的原理与方法。通过主题地图的对比得知,2008年中可视化的应用比2001年更加广泛,主要体现在以下几方面:航空航天、交通、DEM、管道网络、战场战役及知识管理等。

This paper made the statistics of the keywords appeared in the documents in the area of GIS visualization in 2001 and in 2008 using co-term analysis method.The statistical result was mapped to the co-term matrixes and related matrixes after standardized pre-process.With the aid of the analysis function and the visualization function of the professional statistical software SPSS,the visualized maps were drawn,then with MapInfo the geographic information system software,document information were added on visualized maps to form the information layer and finally created thematic maps.This paper also introduced the theories and methods about thematic maps in brief.By contrast between the thematic maps,it was clearly seen that the visualization application in 2008 was much wider than in 2001 in the following aspects such as aviation,traffic,DEM,pipeline,military battlefields,knowledge management etc.