Mini University Demo Project

This repository contains the Mini University demo ontology used to illustrate the updated web-based OWLGrEd visual notation and tooling for OWL 2 ontology management.

Graphical OWL ontology (Mini University)

The Mini University ontology is represented using a UML-inspired graphical notation for OWL 2.

OWL export in Turtle

Graphical example of property qualifiers

Contextual metadata attached to a property axiom or property assertion, such as temporal validity, provenance, or confidence.

• qualifiers are encoded using OWL 2 annotation properties,
• the qualifier-to-property link is represented via an AnnotationAssertion that connects the qualifier annotation property to the qualified property,
• additional nested annotations can further describe the qualifier (for example expected value type via rdfs:range or multiplicity constraints),
• once defined, the same qualifier annotation properties can be reused to annotate instance-level assertions.