Spatial Knowledge's Extraction And Analysis From Intertextual Geographical Diagrams

In ancient Chinese diagrams used to record geographic information,images usually do not exist in isolation,but forming an intertextuality system with texts to represent human spatial knowledge acquired from complex material environment.This kind of intertextual geographical diagrams imply objective spatial knowledge such as appearance and locations,as well as subjective spatial knowledge such as referential relationship and importance.Different from objective knowledge,subjective spatial knowledge is generally hidden and fragmented.It needs to be decoded and extracted to appear.Based on these understanding,this thesis uses the mathematical quantification and data structure,taking Hong Wu Jing Cheng Tu Zhi as the research sample to extract and analyze spatial knowledge from intertextual geographical diagrams.In the perspective of geographic elements' editing attributes,the author discretely assigns 288 geographic elements' chapters' order,elements' order,the number of times and fineness the elements drawn by maps by formulating mathematical quantization rules,to extract declarative and relational spatial knowledge.In the perspective of referential relationship,based on the graph theory and its common analysis algorithms,the author analyzes structure and hierarchy of 273 references in the relational network which text part implies,to extract relational and procedural spatial knowledge.Based on the results of comprehensive analysis,the boundary elements,represented by the thirteen inner city gates,the Dajiang(Yangtze River)and Zhong Mountain,are in higher positions in the hierarchical network of Nanjing in early Ming Dynasty.City gates,mountains,and bridges usually act as references to describe locations of other elements.This thesis provides a new perspective for exploring how the ancient know space by constructing a series of spatial knowledge extraction methods from intertextual geographical diagram.Second,based on mathematical algorithms and GIS visualization,this method can generate a set of relatively objective data,graphs and diagrams,providing researchers with a data base for analyzing spatial information.In addition,the spatial knowledge extracted by this method can provide some basis and reference for the protection and urban planning of today's historical cities.The whole thesis contains about 48 000 words,112 pictures and charts.