This lecture covers a lot of ground- from very basic to quite advanced. It begins by attempting to define the Semantic Web and explain its basic principles, which leads to a discussion of Linked Data and the principles which underpin it. The RDF data model is briefly described before moving on to how vocabularies are designed and reasoned over using RDF Schema and OWL.
Keywords: Web Ontology Language (OWL), RDF Schema, Triple, Turtle, HTTP URIs, Direct semantics
Author: Hogan, Aidan
Publisher: DERI Galway
Date created: 2012-07-04 04:00:00.000
Time required: P90M
- Knows the subject-predicate-object component structure of a triple.
- Understands that URIs and literals denote things in the world ("resources") real, imagined, or conceptual.
- Understands RDF serializations as interchangeable encodings of a given set of triples (RDF graph).
- Understands that Linked Data (2006) extended the notion of a web of documents (the Web) to a notion of a web of finer-grained data (the Linked Data cloud).
- Understands that owl:equivalentProperty and owl:equivalentClass may be used when equivalencies between properties or between classes are exact.
- Understands the role of formally declared domains and ranges for inferencing.
- Uses RDF Schema to express semantic relationships within a vocabulary.