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Semantic Web Portals

Semantic Web Portals. State of the Art Survey. Definition. Semantic Web Portal Central entry point for group with common interest Infrastructure to share and exchange information Based on semantic web technologies Ontology repositories, Web Services?, ??. Definition. Semantic Web Portal

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Semantic Web Portals

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  1. Semantic Web Portals State of the Art Survey

  2. Definition • Semantic Web Portal • Central entry point for group with common interest • Infrastructure to share and exchange information • Based on semantic web technologies • Ontology repositories, Web Services?, ??

  3. Definition • Semantic Web Portal • Central entry point for group with common interest • Infrastructure to share and exchange information • Based on semantic web technologies • Ontology repositories, Web Services?, ?? • Semantically Interweaved Groupware Features?

  4. Evaluation scheme • How to split a complex infrastructure?

  5. Evaluation scheme Grounding Technologies Semantic Web Technologies Ontology Semantic Web Services System Technologies Data Management System (Web Server,OS. etc.)

  6. Evaluation scheme Information Processing Collaboration Features synchronous asynchronous information item workflow Creation Publication Organization Access Maintenance Grounding Technologies Semantic Web Technologies Ontology Semantic Web Services System Technologies Data Management System (Web Server,OS. etc.)

  7. Evaluation scheme Information Access User Interface Information Processing Collaboration Features synchronous asynchronous information item workflow Creation Publication Organization Access Maintenance Grounding Technologies Semantic Web Technologies Ontology Semantic Web Services System Technologies Data Management System (Web Server,OS. etc.)

  8. Selected Portals • Esperonto • OntoWeb • Emplois K42 • Mondeca ITM • Others: • SWWS Portal • Mindswap • „Karlsruhe Portals“ • OntoWebEdu

  9. Esperonto

  10. Esperonto

  11. Esperonto • WebODE Ontology Platform • Ontologies as meta data structure and organization principle • Pure file system to store documents • No groupware / collaboration features • Poor user interface

  12. OntoWeb

  13. OntoWeb • Based on ZOPE / CMF Framework • Publishing workflow, User concept, private folders, ... • Ontology classes mapped to ZOPE Content Types • Matured User Interface • ...but how many semantics?

  14. Empolis K42

  15. Empolis K42 • Infrastructure – not a complete portal • Based on Topic Maps + Association Templates • API to Access it • Topic Maps Editing Component, Standard Visualization Techniques like hyperbolic tree

  16. Mondeca ITM

  17. Mondeca ITM • Different Connectors to DMS • e.g. file system or custom DMS • Meta-ontologies • Modelling: Structure, Constraints, Access • OWL, designed with Protege • also Topic Maps as internal format • Gather Meta Data: • Linguistic tools (automatic) • MS Office meta data (semi automatic) • Via forms (manual)

  18. others • SWWS • Protege + RDQL • Domain Ontology + separate Presentation Ontology • Mindswap • Embedded RDF docs, and ??? • „Karlsruhe Portals“ • KA², KAON, AIFB, ... • OntoWebEdu • CGI script generating HTML forms from an Ontology

  19. Conclusion • Ontology Repositories as base technology still under development • Multi user support / versioning / different standards • Ontolgies as: • Meta data structure  • ease exchange and reuse  • Real time collaboration  • Integration of components  • Emphasis either on DMS or on Ontology Repository ... • Community Feature • ???

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