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Knows that the word "ontology" is ambiguous, referring to any RDF vocabulary, but more typically a set of OWL classes and properties designed to support inferencing in a specific domain.

Periodic Table in OWL

PeriodicTable.owl is a representation of the Periodic Table of the Elements in the OWL Web Ontology Language. It provides reference data to support Semantic Web [...]

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By |January 15th, 2016|Comments Off on Periodic Table in OWL

Analyzing Schema.org

Schema.org is a way to add machine-understandable information to web pages that is processed by the major search engines to improve search performance. The definition [...]

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By |November 9th, 2015|Comments Off on Analyzing Schema.org

Semantic Web Tutorial 11/14: RDF Schema and OWL 3/4

Follows where previous video left off with its description of classes, properties, domain and range. Discusses how RDF Schema approaches membership of a class differently [...]

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By |September 30th, 2015|Comments Off on Semantic Web Tutorial 11/14: RDF Schema and OWL 3/4

RDF Schema

Discussion of RDFS, focusing on how classes and properties allow one to make inferences about resources. Covers axiomatic triples and inferencing from subproperties. Also discusses [...]

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By |September 15th, 2015|Comments Off on RDF Schema

Building and Using Ontologies

The speaker discusses the meaning of the word "ontology" in the context of computer science before focusing on how to select a relevant ontology for [...]

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By |September 15th, 2015|Comments Off on Building and Using Ontologies

Ontologies and the Semantic Web

This site introduces ontologies and the Semantic Web, with an emphasis on how ontologies are defined and used for applications. There are about about thirty [...]

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By |September 15th, 2015|Comments Off on Ontologies and the Semantic Web

Learning from the Masters: Understanding Ontologies found on the Web (Part 2)

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 2)

An Introduction to OWL

This video lecture starts with an overview of the requirements for defining and using ontologies on the Web. It then outlines the main concepts and [...]

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By |September 15th, 2015|Comments Off on An Introduction to OWL

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

Knowledge Graph Identification

Large-scale information processing systems are able to extract massive collections of interrelated facts, but unfortunately transforming these candidate facts into useful knowledge is a formidable [...]

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By |September 15th, 2015|Comments Off on Knowledge Graph Identification