1. BBY 464 Semantic Information Management (Spring 2016) RDF and RDF Schema
Yaşar Tonta & Orçun Madran
[yasartonta,
Hacettepe University
Department of Information Management

2. Semantic Web

3. From Syntactic to Semantic Interoperability

4. XML: Raw data, no semantics

5. RDF
“a conceptual data model which can be rendered physically (serialized) using various formats such as N3, Turtle, RDF/XML etc.”
Models data in triples (subject->predicate->object) to create a graph

6. RDF triples
Subject denotes the resource and the predicate expresses the relationship between the subject and the object

7. Slides from WebBackplane http://www. slideshare. net/mark

15. RDF

16. Graph

17. Köningsberg’s Seven Bridges (L. Euler-1736)

18. Graph Theory Vertex Edge Edge Edge Edge Vertex Vertex Edge Edge Edge

19. Undirected graph
Directed graph

20. Slides from WebBackplane http://www. slideshare. net/mark

21. rdf:type

23. RDF Schema
“a general purpose language for representing simple RDF vocabularies on the Web”
Provides schema level information
The elements of RDFS can be used to construct ontology
Provides a mechanism for describing groups of related resources (RDF), and the relation between them
RDFS is a semantic extension of RDF
There are others (OWL, FOAF, etc.)

24. RDF(S): Representing objects and relations among them