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Chapter 6 semantic web

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  • 1. Chapter 6 Building Semantic Web
  • 2. The Web Agent Resource Resource Agent Resource Agent WEBAkerkar: Foundations of © Narosa Publishing House, 2009 2Semantic Web.
  • 3. Evolution of Web Web Web Semantic Web Migrated Web Semantic Web Module 1 Module 2 Module 3 Module 4 Module 5 (1995) (1998) (1999) (2000) (2001) The WebAkerkar: Foundations of © Narosa Publishing House, 2009 3Semantic Web.
  • 4. Vision of Semantic WebAkerkar: Foundations of © Narosa Publishing House, 2009 4Semantic Web.
  • 5. Web Services• Web services is a software system identified by a URI, whose public interfaces and bindings are defined and described using XML.Akerkar: Foundations of © Narosa Publishing House, 2009 5Semantic Web.
  • 6. Infrastructure Directory Service Security Applications Choreography Web Services Service Descriptions in WSDL SOAP URIs XML HTTP, SMTP, other transportAkerkar: Foundations of © Narosa Publishing House, 2009 6Semantic Web.
  • 7. Web Service Scenario UDDI Points to Description Registry WSDL Describes Service Search Service Points to Service SOAP Service Consumer Web ServiceAkerkar: Foundations of © Narosa Publishing House, 2009 7Semantic Web.
  • 8. Web Service Technologies • SOAP for accessing Web Services • WSDL for describing Web Services • UDDI for publishing and looking up Web ServicesAkerkar: Foundations of © Narosa Publishing House, 2009 8Semantic Web.
  • 9. CombinationSemantic Web + Web Services = Semantic Web Services• Use Semantic Web technologies to describe Web ServicesAkerkar: Foundations of © Narosa Publishing House, 2009 9Semantic Web.
  • 10. OWL-S Service presents ServiceProfile Resource offers Service described by ServiceModel supports ServiceGroundingAkerkar: Foundations of © Narosa Publishing House, 2009 10Semantic Web.
  • 11. Semantic Web Services (SWS)• The SWS architecture – a set of components that support the usage activities. – Between a requester and a provider, components such as a register, a reasoner, a matchmaker, a decomposer and an invoker. – The components have different names and scopes across individual approaches.Akerkar: Foundations of © Narosa Publishing House, 2009 11Semantic Web.
  • 12. SWS Infrastructure – Usage activities • define functional requirements; – the architecture • defines the components needed for accomplishing these activities; and – the service ontology • aggregates all concept models related to the description of SWS and • constitutes the knowledge-level model of the information describing and supporting the usage of the services.Akerkar: Foundations of © Narosa Publishing House, 2009 12Semantic Web.
  • 13. Main Players – W3C – DARPA – EU – Funded Research & DevelopmentAkerkar: Foundations of © Narosa Publishing House, 2009 13Semantic Web.
  • 14. Proof & Trust• Proof: – Digital signatures plays an important role in proof. – Security technologies like encryption and access control can be used to ensure confidentiality of information.• Trust: – Everyone should be able to define a trust model for himself, – A mechanism is necessary to derive the degree of trust for each new source. – WEB OF TRUST!Akerkar: Foundations of © Narosa Publishing House, 2009 14Semantic Web.
  • 15. Suggested Readings 1. Battle, S.; Bernstein, A.; Boley, H.; Grosof, B.; Gruninger, M.; Hull, R.; Kifer, M.; Martin, D.; McGuinness, D. L.; McIlraith, S. A., Newton, G.; De Roure, D.; Skall, M.; Su, J.; Tabet, S.; Yoshida, H. Semantic Web services framework (SWSF), W3C member submission, 2005. 2. T. Bellwood et al. UDDI Version 3.0. http://uddi.org/pubs/uddi-v3.00-published- 20020719.pdf, World Wide Web Consortium (W3C), 2002. 3. Cabral, L.; Domingue, J.; Motta, E.; Payne, T.; Hakimpour, F. Approaches to Semantic Web services: an overview and comparison, Proceedings of the European Semantic Web Conference, 2004. 4. S. Lu, M. Dong and F. Fotouhi. "The Semantic Web: opportunities and challenges for next- generation Web applications." Information Research 7(4), 2002. 5. J. Ibbotson, Simple Object Access Protocol (SOAP) 1.2: Usage Scenarios. http://www.w3.org/TR/xmlp-scenarios/, World Wide Web Consortium (W3C), HTML, 2002. 6. Feier, C.; Roman, D.; Polleres, A; Domingue, J.; Stollberg, M.; Fensel, D. Towards intelligent Web services: Web Service Modeling Ontology (WSMO), Proceedings of the International Conference on Intelligent Computing, 2005. 7. D. Fensel C. Bussler. The Web Service Modelling Framework WSMF. Electronic Commerce: Research and Applications. Vol. 1. 113-137, 2002. 8. Kungas, P.; Matskin, M. Web Services roadmap: the Semantic Web perspective, Proceedings of the International Conference on Internet and Web Applications and Services, 2006. 9. Lara, R.; Roman, D.; Polleres, A.; Fensel, D. A conceptual comparison of WSMO and OWL-S, Proceedings of the European Conference on Web Services, 2004. 10. W3C. "Report on Development of Web Service Discovery Framework." October 2003. 11. DERI. "Web Service Modelling Ontology Project." DERI Working Drafts, 2004.Akerkar: Foundations of © Narosa Publishing House, 2009 15Semantic Web.

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