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McIlraith, KSL Stanford April 11, 2003 Semantics Web Services Language: Scope and Objectives Sheila McIlraith Knowledge Systems Lab, Stanford University.

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Presentation on theme: "McIlraith, KSL Stanford April 11, 2003 Semantics Web Services Language: Scope and Objectives Sheila McIlraith Knowledge Systems Lab, Stanford University."— Presentation transcript:

1 McIlraith, KSL Stanford April 11, 2003 Semantics Web Services Language: Scope and Objectives Sheila McIlraith Knowledge Systems Lab, Stanford University April 11, 2003

2 McIlraith, KSL Stanford April 11, 2003 Context Context dictates what we can do and how we should do it: Fast-paced industry initiative on Web services Minimal interest in semantic web issues

3 McIlraith, KSL Stanford April 11, 2003 How? Must integrate with and complement industry efforts Convince mainstream of the merits/value-added of SWS –demonstrate value-added through demos of cool apps –facilitate adoption of SWS through development of tools –integrate with existing standards Lead and influence standards efforts rather than try to re- engineer them.

4 McIlraith, KSL Stanford April 11, 2003 What? Let the applications, unique to Semantic Web Service drive language development

5 McIlraith, KSL Stanford April 11, 2003 Applications: Automation Tasks Automation of: Web service discovery Find me a shipping service that will transport frozen vegetables from San Francisco to Tuktoyuktuk. Web service invocation Buy me Harry Potter and the Philosophers Stone at Web service selection, composition and interoperation Make the travel arrangements for my WWW11 conference. Web service execution monitoring Has my book been shipped yet? Web service mediation Web service simulation and verification

6 McIlraith, KSL Stanford April 11, 2003 Observations DAML-S is appropriate for WS discovery and invocation DAML-S + Rules (or the like) may be sufficient for WS interoperation, semantic translation Need something more expressive (and different) for composition, complex mediation, simulation and verification. Partially addressed by industry initiatives such as XLANG, WSFL and BPEL4WS.

7 McIlraith, KSL Stanford April 11, 2003 Language Desiderata (incomplete) Declarative Compositional Well-defined semantics Understandable & usable (tools) Amenable to automated reasoning techniques Not just interface descriptions, but functional and behavioral specifications of component software Integrated with existing industry standards XML, SOAP, WSDL, BPEL(?) Addresses both the KR and PL aspects of WS.


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