RDF - Foundations of Semantic Web Technologies

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XML syntax for RDF • Equivalent representation of literals using XML attributes – the attribute-name is then the property-URI • Equivalent representation of objects by giving their URIs as value of a rdf:resource attribute within a property tag. KR4SW – Winter 2012 – Pascal Hitzler 22
XML syntax for RDF • The use of namespaces is essential since the use of the colon ‘:’ in XML attributes is not allowed unless it is used with a namespace. • Problem: namespaces cannot be used in values of XML attributes: is wrong since ‘book’ would be interpreted in the sense of a URI schema. • Solution: use XML ENTITYs. KR4SW – Winter 2012 – Pascal Hitzler 23
Page 1 and 2: Knowledge Representation for the Se
Page 3 and 4: Today: RDF syntax KR4SW - Winter 20
Page 5 and 6: Two XML Problems • How do you enc
Page 7 and 8: RDF idea • Use (directed) graphs
Page 9 and 10: Table of contents: RDF 1. Motivatio
Page 11 and 12: Literals • for representing data
Page 13 and 14: RDF triples • An RDF triple consi
Page 15 and 16: Turtle - Terse RDF Triple Language
Page 17 and 18: Turtle • grouping of triples with
Page 19 and 20: XML syntax for RDF • namespaces a
Page 21: XML syntax for RDF • Untyped lite
Page 25 and 26: Table of contents : RDF 1. Motivati
Page 27 and 28: Datatypes • usually use of XML Sc
Page 29 and 30: What is wrong with these? KR4SW - W
Page 33 and 34: Blank nodes syntax shortcut: KR4SW
Page 35 and 36: Blank nodes syntax shortcut: KR4SW
Page 37 and 38: Open lists (containers) KR4SW - Win
Page 39 and 40: Closed lists (collections) KR4SW -
Page 41 and 42: Comparison KR4SW - Winter 2012 - Pa
Page 43 and 44: Class project - status Domains: •
Page 47: Class planning (tentative) Tuesday

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