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Knows that Web Ontology Language (OWL) is available in multiple “flavors” that are variously optimized for expressivity, performant reasoning, or for applications involving databases or business rules.

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

Towards Reconciling SPARQL and Certain Answers

SPARQL entailment regimes are strongly influenced by the big body of works on ontology-based query answering, notably in the area of Description Logics (DLs). However, [...]

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By |September 15th, 2015|Comments Off on Towards Reconciling SPARQL and Certain Answers

ELITE: An Entailment-based Federated Query Engine for Complete and Transparent Semantic Data Integration

In recent years, the core of the Semantic Web has evolved to a conceptual layer built by a set of ontologies mapped onto data distributed [...]

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By |September 15th, 2015|Comments Off on ELITE: An Entailment-based Federated Query Engine for Complete and Transparent Semantic Data Integration

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

Querying Linked Data

This slide presentation looks in detail at SPARQL and introduces approaches for querying and updating semantic data. It covers SPARQL algebra and protocol, and also [...]

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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

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

RDFS vs. OWL

Previous lessons in this module introduced both RDF Schema and OWL as data modeling languages for describing RDF data. So which should you use? This [...]

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By |August 13th, 2015|0 Comments