Mining Content Pattern And Constructing Tupu Of Chinese Provincial Comprehensive Atlas

Since the beginning of the 21 st century,the compilation and publishing of atlas in China has been developing vigorously,showing a blooming posture,publishing a large number of various atlas.However,these atlases emphasize the characteristics of the cartographic area,except for the data base and compilation technology,the content system of the atlas shows significant differences.At present,there are few researches on the content structure characteristics of atlas,and a system structure standard for reference and evaluation has not been formed.Generally speaking,the core content of same type atlas in content organization structure is relatively stable.This part can be regarded as the frequent pattern of atlas in content system.It is of great significance for the design and quality control of similar atlas to sort out and summarize such frequent patterns.As a simple and clear research tool,Tupu is widely used in many scientific fields,such as gene map in biology field,Geo-Informatic Tupu in geography field and so on.In this study,Tupu is used to carry out in-depth research on the content system of the atlas.Taking the provincial comprehensive atlas of China as the research object,the frequent patterns of the thematic content organization of the atlas are analyzed by using frequent pattern mining technology through sorting out the content structure system of the published provincial comprehensive atlas.Finally,this paper discusses the composition of Tupu of the content model of this kind of atlas.The main research work of this paper is as follows:1.This paper systematically combs the content structure of the provincial comprehensive atlas in recent ten years,normalizes the content structure of the atlas by using natural language processing and other technologies,and obtains a relatively unified content structure system of the atlas;2.In this paper,frequent pattern mining technology is used to mine the frequent patterns of the content structure system of atlas,from which the longest frequent pattern is selected as the final atlas content pattern.According to the graph group,the content and support of content pattern are analyzed.3.In this paper,the content model of the atlas is cut out with high support degree,and the content model Tupu of the provincial comprehensive atlas of China is constructed by visualization,and the Tupu is used to compare and analyze each map group,the overall atlas and the specific atlas.The Tupu can be used as the core part of the content model of provincial comprehensive atlas,and as an important reference for the content structure design and evaluation of such atlas.