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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 [...]

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By |May 18th, 2017|Comments Off on OWL 2 Web Ontology Language Primer (Second Edition)

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 [...]

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By |April 1st, 2017|Comments Off on RDFS for Hierarchy and Subsumption

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 [...]

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By |January 10th, 2017|Comments Off on Protege: How To Define Property Types and Axioms

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 [...]

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By |January 10th, 2017|Comments Off on Protege: How To Add Individuals

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 [...]

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By |January 10th, 2017|Comments Off on Protege: How To Define Classes as Property Restrictions

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 [...]

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By |January 10th, 2017|Comments Off on Protege: How To Define Class Axioms

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 [...]

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By |January 8th, 2017|Comments Off on Simple Protege Tutorial: Adding Object Properties

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 [...]

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By |January 8th, 2017|Comments Off on Simple Protege Tutorial: Adding Individuals

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 [...]

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By |January 8th, 2017|Comments Off on Simple Protege Tutorial: Adding Data Properties

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. [...]

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By |November 22nd, 2016|Comments Off on Coloring RDF Triples to Capture Provenance