A Flexible Integration Framework for Semantic Geospatial WebApplication

摘要

With the growth of the World Wide Web technologies, the access to and use of geospatial information changed in thepast decade radically. Previously, the data processed by a GIS as well as its methods had resided locally and containedinformation that was sufficiently unambiguous in the respective information community. Now, both data and methodsmay be retrieved and combined from anywhere in the world, escaping their local contexts. The last few years have seen agrowing interest in the field of semantic geospatial web. With the development of semantic web technologies, we haveseen the possibility of solving the heterogeneity/interoperation problem in the GIS community. The semantic geospatialweb application can support a wide variety of tasks including data integration, interoperability, knowledge reuse, spatialreasoning and many others. This paper proposes a flexible framework called GeoSWF (short for Geospatial SemanticWeb Framework), which supports the semantic integration of the distributed and heterogeneous geospatial informationresources and also supports the semantic query and spatial relationship reasoning. We design the architecture ofGeoSWF by extending the MVC Pattern. The GeoSWF use the geo-2007.owl proposed by W3C as the referenceontology of the geospatial information and design different application ontologies according to the situation ofheterogeneous geospatial information resources. A Geospatial Ontology Creating Algorithm (GOCA) is designed forconvert the geospatial information to the ontology instances represented by RDF/OWL. On the top of these ontologyinstances, the GeoSWF carry out the semantic reasoning by the rule set stored in the knowledge base to generate newsystem query. The query result will be ranking by ordering the Euclidean distance of each ontology instances. At last, thepaper gives the conclusion and future work.