期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 4
出版社：Copernicus Publications
摘要：With the increasing need of spatial data in various decision support systems, the access and sharing of geospatial data over the Internet has become an important issue. But the underlying heterogeneity in geospatial data syntax and semantics are the major bottleneck towards this direction. The present standardization approach suggests that there should be a core schema for each of the data repositories providing the metadata information of the data sources. The development of the core schema at the organizational level, at the national level has also been thought of. Open Geospatial Consortium (OGC) has addressed the heterogeneity problem and defined several standards for data sharing and accessing. GML has been proposed by OGC to be the standard interoperable data format. This underlying data structure for GML data has been termed as application schema. In this paper we propose an approach for semantic based matching of the application schemas across several data repositories both at the element level and structure level. Through this mapping methodology, data conforming to one schema can be exported to the other schema. The application of ontology has been utilized to generate the mapping rules from one schema to the other. This will subsequently help in converting data in one schema format to the other
