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Knows Web Ontology Language, or OWL (2004), as a RDF vocabulary of properties and classes that extend support for expressive data modeling and automated inferencing (reasoning).

Answering Queries Over OWL Ontologies with SPARQL

This slide presentation discusses the various types of RDF Schema and OWL entailment regimes defined by SPARQL 1.1. It highlights where limitations and restrictions exist [...]

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By |September 15th, 2015|Comments Off on Answering Queries Over OWL Ontologies with SPARQL

Expressive Languages for Querying the Semantic Web

SPARQL 1.1 was recently released, which includes entailment regimes for RDFS and OWL vocabularies and a mechanism to express navigation patterns through regular expressions. Unfortunately, [...]

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By |September 15th, 2015|Comments Off on Expressive Languages for Querying the Semantic Web

Learning from the Masters: Understanding Ontologies found on the Web (Part 1)

The purpose of this presentation was to help conference attendees gain sufficient experience of working with OWL and tools (e.g., the Swoop ontology editor/browser) to [...]

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By |September 15th, 2015|Comments Off on Learning from the Masters: Understanding Ontologies found on the Web (Part 1)

Schema-Agnostic Query Rewriting in SPARQL 1.1

SPARQL 1.1 supports the use of ontologies to enrich query results with logical entailments, and OWL 2 provides a dedicated fragment OWL QL for this [...]

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By |September 15th, 2015|Comments Off on Schema-Agnostic Query Rewriting in SPARQL 1.1

Web Ontology Language

A walk-through of the basic technologies underpinning OWL and the Semantic Web. Very brief and provides no exposition. May provide inspiration for the outline of [...]

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By |August 13th, 2015|0 Comments

Usage of Linked Data: Introduction and Application Scenarios

This slide presentation introduces the main principles of Linked Data, as well as underlying technologies and background standards. It provides basic knowledge for how data [...]

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By |August 13th, 2015|0 Comments

OWL Web Ontology Language

A slide presentation of ontology languages focusing on OWL, with information on RDF, RDF Schema, and XML as well. Discusses the three "species" of OWL- [...]

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By |August 13th, 2015|0 Comments

Intro to OWL & Ontology

This slide presentation is an overview of OWL, including its classes, properties, and restrictions. Also includes brief coverage of how OWL relates to RDF Schema [...]

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By |August 13th, 2015|0 Comments

What is an Ontology?

A brief description of an ontology and its benefits. Explains how classes and relationships are used in the RDF data model to make triples.URL: https://www.youtube.com/watch?v=jfUPLuPL3HoKeywords: [...]

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By |August 13th, 2015|0 Comments

Flavors of OWL

This lesson looks at the different flavors of OWL, each of which is a distinct subset of the full OWL standard. Some are simpler and/or [...]

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By |August 13th, 2015|0 Comments