W3C is pleased to receive the Lightweight Semantic Descriptions for Services on the Web Submission from the W3C Members:
The WSMO-Lite submission is a restricted subset of the WSMO (Web Services Modelling Ontology) submission to be used as an extension to SAWSDL and WSDL for Web Services descriptions.
It proposes a layered approach for addition of semantics at the different description levels: the data model (in XML Schema) is annotated with a domain ontology, the interface (in WSDL) is annotated with conditions for invocation of the service and effects of that invocation, the overall functionality of the service is annotated thanks to a service classification ontology.
Non-functional properties are also represented by a separate ontology.
The WSMO-Lite ontology itself defines 4 classes, to be used in domain-specific services ontologies:
The Submission document includes a detailed example of annotations in a concrete scenario, using SAWSDL and WSMO-Lite.
Authors could also look at the RIF in RDF Working Draft for embedding RIF in RDF.
The WSMO-Lite Submission provides a simple way to handle simple semantic description of Web services without having to use a complete SWS modelling framework to start with. It is a useful addition to SAWSDL for annotations of existing services and the combination of both techniques can certainly be applied to a large number of semantic Web services use cases.