Framework of Semantic Web Services and Service Mediation

Semantic web services provide a syntactic and semantic description about the capability of web services, so that users can discover and compose adequate services effectively. Semantic web services have a framework describing web services, support the ontology which is a base technology of data model, and were defined by semantic technology like WSMO, OWL-S, and SAWSDL. But interoperability of web services has heterogeneity problems because there were structural and conceptual inconsistency in describing ontology and capability of web services. Therefore, service mediations aim to resolve mismatches among differently used terminologies, in how to communicate between web services and on the level of combining web services. In this paper, we define the framework of semantic web services. Also we survey the service mediation approaches of WSMO, OWL-S, and SAWSDL and propose the architecture and function of data mediation. Ontology based data mediation can ensure the semantic interoperability of web services and provide the advanced discovery result.