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.
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 [...]
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, [...]
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 [...]
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 [...]
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 [...]
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- [...]
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 [...]
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 [...]
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 [...]