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Research on the Key Technology of the Integration of Spatial Data about "Digital House Property" in Nanjing

Author: JiangHaiQin
Tutor: ZuoGuoNian
School: Nanjing Normal University
Course: Cartography and Geographic Information Systems
Keywords: Digital House Semantic Sharing Sharing platform Spatial Data Integration
CLC: P208
Type: PhD thesis
Year: 2003
Downloads: 714
Quote: 15
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Abstract


With the further deepening of GIS socialization, development and application of information technology needs to expand spatial data integration is increasingly becoming the main driving force. However, to truly achieve geographic information sharing, we must solve the multi-source heterogeneous geospatial data sharing and interoperability of the bottleneck. Currently on geospatial data sharing and interoperability of the research focuses on model integration and software technology integration, but the ideas and methods of GIS integration is still relatively fragmented, incomplete, and therefore it is necessary from the micro and macro angles, through the GIS system different perspectives, unified GIS Integration theory and method system, the formation of a unified framework. Meanwhile in the realization of spatial data sharing, and multi-source heterogeneous spatial data sharing should be based on semantic sharing, and data sharing as compared to shared semantics is to study how to understand the data obtained, the focus is to address the different departments between individuals in the definition of standards gap. From the theoretical point of view is shared semantic GIS geographic information sharing under GIS technology essential, not only to solve the problem on the data level, but also to solve the problems on the semantic level, including geographic cognitive problems and their logical description of the problem. From the technical point of view to achieve through the data format conversion there are many ways, and how to achieve semantic shared at the exploratory stage. Papers from the spatial data integration technology research to start, followed OPENGIS international norms in the multi-source heterogeneous spatial data sharing and interoperability implementation in-depth analysis on the basis of Nanjing \source spatial integration of heterogeneous databases, how different elements under the GIS platform to share, how to achieve spatial relationships automatically generating three semiautomatic semantic aspects of GIS implementation strategies shared essence and explore and gives the application software solutions programs. Proved only to solve the multi-source heterogeneous spatial data sharing semantics, in order to truly achieve sharing platform for the future \In this thesis, the main contents and conclusions are summarized as follows: 1, through integration of geographic information systems studies comparing methods and techniques found integrated geographic information sharing platform is the most effective ways and means to achieve multi-source heterogeneous spatial sharing basis. By \. 2, through the different GIS platforms heterogeneous multi-source spatial data analysis shows that the semantic sharing GIS GIS Nanjing \is to study how to interpret the data obtained, but also must study GIS data sharing geographic information transmission mechanism. 3, with \do the following three aspects of the research: the door) through the establishment of GIS sharing platform for multi-source spatial integration of heterogeneous databases; (2) by sharing primitive semantic standards, different elements under GIS platform sharing; (3) through rule base and knowledge base to achieve automatic semi-automatic generation of spatial relationships.

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > General issues > Mapping database and information system
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