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Semantic Web 2.0 Dr. Harry Chen CMSC 491S/691S April 21, 2008
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Semantic Web ,[object Object],[object Object],[object Object],[object Object],[object Object]
Semantic Web Research ,[object Object],[object Object],[object Object],[object Object],[object Object]
Most Important SW Components Ontology RDF URI Semantic Web
URI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
RDF ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
View RDF as a Graph Source: http://www.w3.org/TR/2003/PR-rdf-primer-20031215/fig1dec16.png
Publish RDF on the Web ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
RDF Representations <rdf:RDF ……..> <….> <….> </rdf:RDF> XML Encoding Graph stmt(docInst, rdf_type, Document) stmt(personInst, rdf_type, Person) stmt(inroomInst, rdf_type, InRoom) stmt(personInst, holding, docInst) stmt(inroomInst, person, personInst) Triples RDF Data Model Good for  Machine Processing Good For  Human Viewing Good For  Reasoning RDF is a simple language for building graph based representations
RDF Demo http://www.w3.org/RDF/Validator/
Ontology (in information systems) ,[object Object],[object Object],[object Object]
Ontology (in the Semantic Web) ,[object Object],[object Object],[object Object],OWL
Ontology Demo Wine Ontology  in SWOOP Wine Agent
Got Semantic Web? Why the Semantic Web remains to be a “research-ish” thing? Ontology RDF URI Semantic Web
Missing a Bridge The Web as we know it The Web that we hope to create Google Amazon YouTube HTML … Knowledge sharing Information reuse Machine-readable Web Ontology …
The “Missing Bridge” Problem ,[object Object],[object Object],[object Object]
Semantic Web’s Missing Bridge ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Misconception #1 The Semantic Web will bring about a “killer” application!
SW is not Web 2.0 ,[object Object],[object Object]
Misconception #2 Web 2.0, JSON, Ajax will “kill” the Semantic Web
SW is not Web 2.0 ,[object Object],[object Object],[object Object]
Misconception #3 The Semantic Web is all about building an AI Web
Semantic Web is not AI Web ,[object Object],[object Object]
Misconception #4 Large ontologies are required for building successful Semantic Web applications
Bigger is not always better! ,[object Object],[object Object],[object Object]
Misconception #5 The Semantic Web is a different Web
We only have one Web ,[object Object],[object Object],[object Object]
We still haven’t solve the problem The Web as we know it The Web that we hope to create Google Amazon YouTube HTML … Knowledge sharing Information reuse Machine-readable Web Ontology …
Let’s do some speculation…
Acting as a futurist… ,[object Object],[object Object],[object Object],[object Object]
What can you conclude from this video? http:// www.youtube.com/watch?v =JVZ6E9EnJ3I
The Web is here to stay ,[object Object],[object Object],[object Object],[object Object]
HTML is here to stay ,[object Object],[object Object]
Open Question. ,[object Object],[object Object],[object Object],[object Object]
Social Web and SW ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Open Question ,[object Object],[object Object],[object Object]
Concluding Remarks ,[object Object],[object Object],[object Object]

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Semantic Web 2.0

  • 1. Semantic Web 2.0 Dr. Harry Chen CMSC 491S/691S April 21, 2008
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  • 5. Most Important SW Components Ontology RDF URI Semantic Web
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  • 8. View RDF as a Graph Source: http://www.w3.org/TR/2003/PR-rdf-primer-20031215/fig1dec16.png
  • 9.
  • 10. RDF Representations <rdf:RDF ……..> <….> <….> </rdf:RDF> XML Encoding Graph stmt(docInst, rdf_type, Document) stmt(personInst, rdf_type, Person) stmt(inroomInst, rdf_type, InRoom) stmt(personInst, holding, docInst) stmt(inroomInst, person, personInst) Triples RDF Data Model Good for Machine Processing Good For Human Viewing Good For Reasoning RDF is a simple language for building graph based representations
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  • 14. Ontology Demo Wine Ontology in SWOOP Wine Agent
  • 15. Got Semantic Web? Why the Semantic Web remains to be a “research-ish” thing? Ontology RDF URI Semantic Web
  • 16. Missing a Bridge The Web as we know it The Web that we hope to create Google Amazon YouTube HTML … Knowledge sharing Information reuse Machine-readable Web Ontology …
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  • 19. Misconception #1 The Semantic Web will bring about a “killer” application!
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  • 21. Misconception #2 Web 2.0, JSON, Ajax will “kill” the Semantic Web
  • 22.
  • 23. Misconception #3 The Semantic Web is all about building an AI Web
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  • 25. Misconception #4 Large ontologies are required for building successful Semantic Web applications
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  • 27. Misconception #5 The Semantic Web is a different Web
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  • 29. We still haven’t solve the problem The Web as we know it The Web that we hope to create Google Amazon YouTube HTML … Knowledge sharing Information reuse Machine-readable Web Ontology …
  • 30. Let’s do some speculation…
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  • 32. What can you conclude from this video? http:// www.youtube.com/watch?v =JVZ6E9EnJ3I
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