W3C | Submissions

Team Comment on "Lightweight Semantic Descriptions for Services on the Web" Submission

W3C is pleased to receive the Lightweight Semantic Descriptions for Services on the Web Submission from the W3C Members:

  1. The Open University
  2. Ontotext AD
  3. Forschungszentrum Informatik (FZI)
  4. University of Manchester

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.

Next Steps

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.

Carine Bournez, W3C Team contact <carine@w3.org>.