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《Science of Surveying and Mapping》 2011-01
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A spatial entity matching approach for updates extraction and integration

WANG Yu-hong(School of Surveying and Land Information Engineering,Henan Polytechnic University,Henan Jiaozuo 454003,China)  
To automatically extract updates from the new version of fundamental geospatial data layer and integrate them into user data layer,a composite spatial entity approach based on multi-source information including attribute,geometry and topology relationship was proposed.Firstly,its basic process and the rules to decide whether entities were corresponding are discussed.Then,the strategies for extracting updates such as creation,disappearance according to the entity matching results were designed based on the definition of change types of spatial entities.Finally,the basic ways of integrating updates guided by the matching results was explained,which used three basic operations(insert,update and delete) and their combinations.The experimental results showed that the proposed approach and related strategies were stable and feasible,and could match the corresponding entities between data layers with the longer time interval and overcome the limitations of the traditional approaches such as being prone to omit the real matches.
【Fund】: 国家自然科学基金重点项目资助(40337055);; 国家科技支撑项目(2006BAJ05A14);; 河南省科技计划重点攻关项目(092102210361);; 河南省教育厅自然科学研究计划项目(2009B420001);; 河南理工大学博士基金项目(B2008-49)
【CateGory Index】: P208
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