Chapter 6 semantic web
1 like770 views
The document discusses the evolution of semantic web services from traditional web services. It describes how semantic web technologies can be used to describe web services using ontologies like OWL-S. This allows web services to be defined and discovered based on their semantic meaning rather than just their syntax. It also outlines the key components involved in a semantic web services infrastructure like directories, matchmakers and invokers. Finally, it discusses some of the main organizations involved in developing semantic web service standards like W3C and DARPA.
Chapter 6 semantic web
- 1. Chapter 6 Building Semantic Web
- 2. The Web Agent Resource Resource Agent Resource Agent WEB Akerkar: Foundations of © Narosa Publishing House, 2009 2 Semantic 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 Web Akerkar: Foundations of © Narosa Publishing House, 2009 3 Semantic Web.
- 4. Vision of Semantic Web Akerkar: Foundations of © Narosa Publishing House, 2009 4 Semantic 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 5 Semantic Web.
- 6. Infrastructure Directory Service Security Applications Choreography Web Services Service Descriptions in WSDL SOAP URIs XML HTTP, SMTP, other transport Akerkar: Foundations of © Narosa Publishing House, 2009 6 Semantic Web.
- 7. Web Service Scenario UDDI Points to Description Registry WSDL Describes Service Search Service Points to Service SOAP Service Consumer Web Service Akerkar: Foundations of © Narosa Publishing House, 2009 7 Semantic Web.
- 8. Web Service Technologies • SOAP for accessing Web Services • WSDL for describing Web Services • UDDI for publishing and looking up Web Services Akerkar: Foundations of © Narosa Publishing House, 2009 8 Semantic Web.
- 9. Combination Semantic Web + Web Services = Semantic Web Services • Use Semantic Web technologies to describe Web Services Akerkar: Foundations of © Narosa Publishing House, 2009 9 Semantic Web.
- 10. OWL-S Service presents ServiceProfile Resource offers Service described by ServiceModel supports ServiceGrounding Akerkar: Foundations of © Narosa Publishing House, 2009 10 Semantic 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 11 Semantic 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 12 Semantic Web.
- 13. Main Players – W3C – DARPA – EU – Funded Research & Development Akerkar: Foundations of © Narosa Publishing House, 2009 13 Semantic 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 14 Semantic 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 15 Semantic Web.