Correctly uses sub-property relationships in support of inference.
OWL 2 Web Ontology Language Primer (Second Edition)
This primer provides an approachable introduction to OWL 2, including orientation for those coming from other disciplines, a running example showing how the language can [...]
RDFS for Hierarchy and Subsumption
This PowerPoint presentation explains the role which concepts from thesauri and taxonomies play in Linked Data (especially as they relate to SKOS). It briefly discusses [...]
Protege: How To Define Property Types and Axioms
This video is about defining property types and axioms using Protégé, a free, open-source ontology editor and framework. Although the video deals with one specific [...]
Protege: How To Add Individuals
This video is about adding individuals to an ontology which was previously created using Protégé, a free, open-source ontology editor and framework. Although the video [...]
Protege: How To Define Classes as Property Restrictions
This video is about defining new classes by leveraging the property restrictions of existing classes. This is demonstrated with Protégé, a free, open-source ontology editor [...]
Protege: How To Define Class Axioms
This video is about defining class axioms using Protégé, a free, open-source ontology editor and framework. Although the video deals with one specific tool, it [...]
Simple Protege Tutorial: Adding Individuals
In this video, individuals (aka, "instances") are created and assigned to the previously created classes and sub-classes. Also shows how to add data property assertions [...]
Simple Protege Tutorial: Adding Object Properties
In this video, properties are added to express the relationships between objects belonging to the various classes. Sub-properties, domains, and ranges are also discussed. Also [...]
Simple Protege Tutorial: Adding Data Properties
In this video, data properties are added to express the relationships between instances and data values, as well as setting domain and range restrictions for [...]
Coloring RDF Triples to Capture Provenance
Recording provenance information of RDF triples aggregated from different heterogeneous sources is crucial in order to effectively support trust mechanisms, digital rights and privacy policies. [...]