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Using WSDL/UDDI and DAML-S in Web Service Discovery

Using WSDL/UDDI and DAML-S in Web Service Discovery. Aphrodite Tsalgatidou National and Kapodistrian University of Athens Email: afrodite@di.uoa.gr http://www.di.uoa.gr/~afrodite. WS Discovery: The problem …. (1) Service Description. Service Provider. (2) Publishing. Invocation/Binding.

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Using WSDL/UDDI and DAML-S in Web Service Discovery

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  1. Using WSDL/UDDI and DAML-S in Web Service Discovery Aphrodite Tsalgatidou National and Kapodistrian University of Athens Email: afrodite@di.uoa.gr http://www.di.uoa.gr/~afrodite

  2. WS Discovery: The problem … (1) Service Description Service Provider (2) Publishing Invocation/Binding (3) Description of Req. needs Service Requestor Service Broker (4) Matchmaking

  3. WS Discovery: Requirements

  4. WHAT reqs: more specifically

  5. WSDL/UDDI

  6. WSDL/UDDI and WHAT reqs

  7. The DAML-S approach

  8. DAML-S and WHAT reqs

  9. Evaluation of DAML-S (1/2) • Issues related to the language specification • Issues inherited from the Semantic Web

  10. Evaluation of DAML-S (2/2) • Generality of descriptions • Possible inconsistency between the ServiceProfile and the ServiceModel • Lack of tools that enable the definition of all three aspects of a Daml-s description • Lawlessness in ontologies • Inability to compare preconditions and effects • Tricky comparison on the non-functional attributes • Maturity issue

  11. Future Work • Expand the survey by examining composition and standards (such as BPEL4WS, WSCL, WSRP, …) and see how they can be combined with other standards in order to meet the specified requirements • Examine DAML-S 0.9, OWL • Investigate the merging of UDDI/WSDL and DAML-S activities • Extend our discovery mechanism prototype to address as many requirements as possible and evaluate the standards

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