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). – Linked Data for Professional Education

OntoCheck: Verifying Ontology Naming Conventions and Metadata Completeness in Protégé 4

Sat, 22 Jul 2017 07:21:14 +0000

This article describes OntoCheck, a plugin available for the Protégé Ontology editor. OntoCheck, allows for ontology tests to be carried out on OWL ontologies, aiding in consistency and compliance with ontology naming conventions and metadata completeness, as well as curation in case of found violations. The authors describe a first version of the software, illustrate its capabilities and use within running ontology development efforts and briefly outline improvements resulting from its application.

URL: https://www.researchgate.net/publication/232224662_OntoCheck_Verifying_ontology_naming_conventions_and_metadata_completeness_in_Protege_4
Keywords: Ontologies, Protégé, Web Ontology Language (OWL)
Author: Boeker, martin
Publisher: PubMed
Date created: 2012-09-01 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M

OWL 2 Web Ontology Language Primer (Second Edition)

Thu, 18 May 2017 07:03:04 +0000

This primer provides an approachable introduction to OWL 2, including orientation for those coming from other disciplines, a running example showing how the language can be used to represent first simple information and then more complex information, how it manages ontologies, and finally the distinctions between its various "flavors".

URL: https://www.w3.org/TR/owl2-primer/
Keywords: Web Ontology Language (OWL), Knowledge representation, Class hierarchy, Property chain, Axiom
Author: Rudolph, Sebastian
Publisher: W3C
Date created: 2012-12-11 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P1H
Educational use: instruction
Educational audience: student
Interactivity type: expositive

OWL "Same As"

Sun, 02 Apr 2017 06:55:49 +0000

This PowerPoint presentation explains the role which concepts from thesauri and taxonomies play in Linked Data. It briefly discusses ontologies in general before moving on to OWL (Web Ontology Language). Discusses the advantages and drawbacks of mixing vocabularies (e.g., OWL, RDFS, SKOS) and trade-offs between simplicity and expressivity. Focuses on the importance of not trying to force relationship types when they are not appropriate (e.g., "broader than" or "narrower than" when no hierarchy exists; "same as" when two objects are not exact matches).

URL: https://github.com/elsevierlabs/LD4PE/files/877579/OWL_SameAs.pptx
Keywords: Web Ontology Language (OWL), Taxonomy, Thesaurus, Equivalence properties
Author: Malaise, Veronique
Publisher: Elsevier
Date created: 2017-03-28 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P25M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive

OWL and DL Homework Exercises

Sat, 21 Jan 2017 06:46:41 +0000

This document contains several "written" and "electronic" homework questions originally from the course "Semantic Web Topics" at LeHigh University. They include: Draw the equivalent graph given an OWL document expressed in RDF syntax; In the OWL RDF/XML-based syntax, write two different axioms (i.e., using a different combination of constructors) stating that the classes Man and Woman are disjoint- without using owl:disjointWith; Given a sets of triples in Turtle syntax which describes several resources, write a set of OWL2 axioms that would allow one to infer several properties about each resource; For each of a series of axioms, determine which of three possible interpretations satisfy it.

URL: http://www.cse.lehigh.edu/~heflin/courses/sw-2013/hw3.pdf
Keywords: Web Ontology Language (OWL), Axioms, Disjointedness, RDF Schema, Description Logic (DL)
Author: Heflin, Jeff
Date created: 2013-02-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P2H
Educational use: assessment
Educational audience: teacher-educationSpecialist
Interactivity type: active

Design an OWL Ontology Project

Sat, 21 Jan 2017 06:46:40 +0000

This document outlines a project originally from the course "Semantic Web Topics" at LeHigh University. Students are asked to work in teams to design an OWL 2 DL ontology (or set of ontologies) for an application domain of their choice – ideally, this domain should be one they know about. Since students are also expected to create a set of instances that demonstrate the use of the ontology, they should also choose a domain that has data they can access. Ontologies must be valid OWL or OWL 2 DL ontologies and should use the rich modeling constructs of OWL as much as possible. A DL reasoner should be used to ensure that classes are satisfiable and that the ontology does not lead to unintended inferences.

URL: http://www.cse.lehigh.edu/~heflin/courses/sw-2013/project1.pdf
Keywords: Web Ontology Language (OWL), RDF Schema, Description Logic (DL)
Author: Heflin, Jeff
Date created: 2013-02-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P4H
Educational use: assessment
Educational audience: teacher-educationSpecialist
Interactivity type: active

On Beyond OWL: Challenges for Ontologies on the Web

Sat, 14 Jan 2017 06:46:02 +0000

In this slide presentation, the author argues that "the need for ontologies in the real world is manifest and increasing". This talk explores some of these needs on the Web-scale in data integration, emerging technologies, and Linked Data applications. It also asks an important question – where are the features needed for these found in OWL? The talk ends with some challenges to the OWL – and greater ontology – community to help increase the use of standard ontologies on the Web.

URL: http://www.slideshare.net/jahendler/on-beyond-owl-challenges-for-ontologies-on-the-web
Keywords: Web Ontology Language (OWL), Semantic Web, Scalability
Author: Hendler, James
Publisher: Tetherless World Constellation (TWC)
Date created: 2015-10-09 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P15M
Educational audience: student
Interactivity type: expositive

Ontologies and the Semantic Web

Fri, 30 Dec 2016 06:44:09 +0000

A video lecture introducing RDF Schema and OWL, with visible slides throughout. The concepts behind ontologies are also discussed in a general, schema-agnostic manner. Places these technologies within the larger context of the Semantic Web.

URL: http://videolectures.net/koml04_harmelen_o/
Keywords: Ontology, Semantic Web, Web Ontology Language (OWL), RDF Schema
Author: van Harmelen, Frank
Date created: 2007-02-25 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P1H
Educational use: instruction
Educational audience: student
Interactivity type: expositive

Periodic Table in OWL

Fri, 15 Jan 2016 13:27:05 +0000

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 applications in chemistry and related disciplines. NOTE: This resource was used extensively in examples in another resource, Introducing SPARQL: Querying the Semantic Web by Leigh Dodds.

URL: http://www.daml.org/2003/01/periodictable/
Keywords: Web Ontology Language (OWL), Vocabulary
Author: Dean, Mike
Publisher: DARPA Agent Markup Language (DAML)
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P15M

Multi-Agent and Semantic Web Systems: Representation

Abi Evans — Fri, 13 Nov 2015 06:00:10 +0000

This slide presentation of lecture material was used as part of a course given at The University of Edinburgh School of Informatics. This lecture covers different kinds of representations for databases and ontologies, focusing on: RDF, RDF Schema, Description Logic (DL), and Web Ontology Language (OWL).

URL: http://www.inf.ed.ac.uk/teaching/courses/masws/lectures-14/3-full.pdf
Keywords: RDF Schema, Web Ontology Language (OWL), Description Logics, Expressivity
Author: McNeill, Fiona
Date created: 2013-01-21 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P25M
Educational use: instruction
Educational audience: teacher-educationSpecialist
Interactivity type: expositive

Multi-Agent and Semantic Web Systems: Description Logics and OWL

Abi Evans — Fri, 13 Nov 2015 06:00:09 +0000

This slide presentation of lecture material was used as part of a course given at The University of Edinburgh School of Informatics. This lecture discusses Description Logic and terminology (such as ABox and TBox) and concepts (such as existential and universal restriction). Discusses OWL and how it is layered onto RDF and RDF Schema, with an RDF/XML syntax, to support inferencing. Object Properties, datatypes, restrictions, axioms, and cardinality in OWL are also discussed.

URL: http://www.inf.ed.ac.uk/teaching/courses/masws/lectures-14/10-full.pdf
Keywords: Cardinality, RDF/XML, Web Ontology Language (OWL), Description Logic, Properties
Author: McNeill, Fiona
Date created: 2013-02-25 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P40M
Educational use: instruction
Educational audience: student
Interactivity type: expositive