Semantic Web 2.0

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]

Semantic Web 2.0

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