Path Planning for Chaining Geospatial Web Services

摘要

Semantic Web technologies provide a promising prospect for automatic discovery and chaining of geospatial Web services. This paper addresses semantic geospatial Web services, particularly the path planning for service chaining. We use OWL-S to represent the geospatial semantic Web service. A graph with nodes representing services and connection weights representing degrees of semantic matching between nodes is formulated using information from multiple geospatial semantic Web services. The graph is used to build logical path models, which can be instantiated to a physical service chain for execution. A prototype system, which includes a real world geospatial model, is implemented to demonstrate the concept and approach.