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).
Ontology Consistency and Instance Checking for Real World Linked Data
Many large ontologies have been created which make use of OWL's expressiveness for specification. However, tools to ensure that instance data is in compliance with [...]
Semantic Technologies: Motivation and Standards
This lecture covers a lot of topics. It hits all the basic standards and technologies in the Semantic Web stack: the RDF data model, SPARQL, [...]
Visual Querying of Linked Data with QueryVOWL
In order to enable users without any knowledge of RDF and SPARQL to query Linked Data, visual approaches can be helpful by providing graphical support [...]
RDF, SPARQL and Semantic Repositories
This massive slide presentation covers a LOT of ground, including. It begins with the benefits of using RDF, RDFS/OWL entailment rules and how they can [...]
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 [...]
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 [...]
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 [...]
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 [...]
Mapping Relational Database into OWL Structure with Data Semantic Preservation
This paper proposes a solution for migrating an RDBMS into an appropriate structure for the Semantic Web (i.e., RDF). The solution takes an existing RDBMS [...]
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 [...]