1. Metadata, Resources, and the RDF 김민수 Chapter 1

2. Creating the Sementic Web with RDF2 Overview Knowledge Representation Library Metadata RDFRDF

3. Creating the Sementic Web with RDF3 Overview XML RDF description Metadata Profile structured

4. Creating the Sementic Web with RDF4 Overview  Language example  Syntax  Vocabulary mapping between symbol and concept  Semantics meaning of the vocabulary  RDF – rules for creating semantics  RDF Schema – a way of creating vocabularies

5. Creating the Sementic Web with RDF5 Overview  Knowledge Representation  Assuming there are universal ways of representing knowledge in vocabulary and structure  Centrally determined framework  RDF  Using the same structure but allowing own vocabulary  Decentralized scheme

6. Creating the Sementic Web with RDF6 What Is RDF?  The format which can represent and transport information  XML 은 structure 밖에 표현하지 못한다  The level above XML determines how the information is interpreted  A way to express relations between objects  graph theory

7. Creating the Sementic Web with RDF7 What Is RDF?  Describing Data: The Concept of Graphs Node 1Node 2 Property name ResourceProperty value

8. Creating the Sementic Web with RDF8  The statement, “Napoleon is emperor”, in RDF. http://www.historybuff.org/Napoleon/ http://www.historybuff.org/France/Emperor/ http://www.historybuff.org/emperor/schema/

9. Creating the Sementic Web with RDF9 What Is RDF?  RDF Vocabularies  Where to define the terms for property names, property values and constraints RDF providing graph structure(format) Not names and properties  RDF Schema

10. Creating the Sementic Web with RDF10 What Is RDF?  RDF Schema  잘 만들지 않으면 Ambiguous 할 수 있다 Which suit? Cloth or lawsuit?  Written in a specific language  Load the schema at the URI when there is an unknown term cf. UAProf(User Agent Profile)

11. Using RDF to Annotate Text and Photos Chapter 2

12. Creating the Sementic Web with RDF12 Overview Annotated document Knowledge Base Amaya rdfpic Protégé-2000

13. Creating the Sementic Web with RDF13 Annotation of Text  Amaya  The browser/editor from the W3C

14. Creating the Sementic Web with RDF14

15. Creating the Sementic Web with RDF15

16. Creating the Sementic Web with RDF16 Annotation of Photo  rdfpic

17. Creating the Sementic Web with RDF17

18. Creating the Sementic Web with RDF18 Protégé-2000  Making a statement about knowledge  Build an ontology