Research on Dynamic GeoSpatial Web Service Composition Based on Workflow
基于工作流的空间信息服务动态聚合技术研究

Based on the characteristic of GeoSpatial Information Service(GWS)and dynamic Web Services Composition, this paper proposes the concepts of Service Node,Service Group,Service Composition Model,Service Composition Plan and Service Composition Instance, and proposes the five-step implement mechanism of dynamic Web Services Composition and Dynamic Service Composition Reference Model(DSCRM). DSCRM builds the framework for the development of dynamic services composition system and the development of dynamic services composition application.The ideas of this paper have been used in city emergency disposal project successfully.