Research on Semantic Service Technology in Mobile Geographic Information System

This paper combines the conceptual construction and classification methods of geo-ontology, explores the method of formal description language to express geo-domain ontology concepts, and defines the concept of geo-ontology in the process of geo-spatial information semantic expression. Controposing to the problem of inadequate description of spatial information services by traditional description methods, Construction of spatial information application ontology with Protege tool and description service information with OWL-S description language are adopted, to realize the semantic integration between geo-information system. It constructs spatial information application ontology and describes service information with OWL-S description language. The elements of service quality are expanded to improve the comprehensiveness of service description. To verify the feasibility of the combination of theory and practical application of geo-ontology, a mobile GIS is developed from the bottom under the support of current mobile development technology, and an example of spatial semantic retrieval is tested. The superiority of geo-ontology in semantic retrieval is verified, which has important theoretical and practical significance.