- International consortium, around 400 Members, started by Tim Berners-Lee, inventor of the Web, in 1995
- Standardization of core Web technologies, publication of guidelines, etc.
Web services Standardization
- Standardization of the Web services infrastructure at W3C:
- SOAP 1.2: messaging framework
- XOP+MTOM+RRSHB: optimized message transmission
- WS-Addressing 1.0: message and service addressing information
- WSDL 2.0: service description
- WS-CDL 1.0: choreography description
- XML Schema Patterns for Databinding
- Interest Group on use of WS technologies and semantic WS technologies, started in 2003 (around 500 subscribers)
The Semantic Web Services Interest Group
- Offers a public group to discuss and work on topics where Web services technologies meet Semantic Web technologies
- Explores new Web services uses and emerging needs in this domain
- Important European research and industry active participation in this Interest Group (more than 50% of the participants)
- Plan: renew this Interest Group
New Scope of the Interest Group
- Discuss appropriate use of Semantics in the discovery, composition, relocatability and other aspects of Web services needs
- Provide guidance and advice to the Web services Working Groups on charter requirements for mapping to Semantic Web technologies
- Review deliverables of W3C and non-W3C working groups related to Web
- Discuss experience of implementation and deployment of Semantic Web in Web services technologies.
Future standardization work?
- Workshop On Frameworks For Semantics In Web Services held in June in Austria [75% participating organizations from EU]
- Complete ontology-based models are not considered mature enough
- Semantic annotations in Web services descriptions are an appealing first step
- Almost no commercial use/plans of SWS, real need for semantics in WS use cases?
Current plan (under discussion)
Semantics for Web Services Characterization Group, 1 year to:
- gather use cases and analyze requirements, characterize, classify desired functionalities
- conclude on the feasibility of one or several pieces of framework satisfying the requirements
- recommend for further work in the area
Semantic Annotations for WSDL Working Group, chartered to:
- develop a simple generic mechanism to enable semantic annotation of Web services descriptions thanks to WSDL 2.0 extension mechanisms
- define a mapping to RDF compatible with the current RDF mapping of WSDL 2.0
How to contribute?
- Public mailing list (with public archives):
- IRC channel on FreeNode, for live discussions: #sws-ig
- "Scratchpad" (IRC to Web)
- Submissions to W3C (OWL-S, WSMO, SWSF, WSDL-S submitted this year)
What about the Grid?
- The Grid platform is a user of the Web platform, much like the Web is a user of the Internet.
The Grid needs the Web: HTTP, XML, Web Services, Semantic Web
- The Grid is a technical community that use W3C technologies, among many others technical communities (e.g. Life Science, Mobile, eGoverment, Oil Industry, Airlines, etc.)
W3C Standards and Grid
- The Web Services architecture is still evolving bottom-up style, and the OGSA roadmap assumes
stability at this level.
- Grid architects should participate more in
design and evolution of W3C technologies.
- Grid developers should implement W3C
- Interoperability between Grids should start with
- W3C works to deliver Open Standards
(technical coordination and leadership, consensus and running code, clear
patent policy, universality, persistence).
- Web services stack and connected work (e.g. Efficient XML Interchange)
- Semantic Web technologies available for Semantic Grid (e.g. SPARQL)
- Semantic Web Services work about to start
- Various W3C instruments like
Workshop, Working Group, Incubator, Interest Group, that can be used
to host a new standard related activity