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 – Linked Data for Professional Education

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

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

Querying Linked Data

Fri, 21 Oct 2016 05:39:20 +0000

This module looks in great detail at SPARQL and introduces approaches for querying and updating semantic data. It covers the SPARQL algebra, the SPARQL 1.1 protocol, and provides examples for reasoning over Linked Data. The module uses examples from the music domain, which can be directly tried out and ran over the MusicBrainz dataset. This includes gaining familiarity with the RDFS and OWL languages, which allow developers to formulate generic and conceptual knowledge that can be exploited by automatic reasoning services in order to enhance the power of querying.

URL: http://www.euclid-project.eu/modules/chapter2.html
Keywords: Inferencing, SPARQL, RDF Schema, Web Ontology Language (OWL), Semantic Web, Entailment
Author: Norton, Barry
Publisher: EUCLID Project
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P3H
Educational use: professionalDevelopment
Educational audience: professional
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

RDF, SPARQL and Semantic Repositories

Abi Evans — Fri, 09 Oct 2015 12:05:16 +0000

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 be used for inferencing, and a thorough discussion of the OWL language and its flavors. The next section covers the SPARQL query language , discussing its basic features and how it compares to SQL. Moving on, the next few sections cover semantic repositories as well as bench-marking and scalability. Then, the use of MapReduce for massively distributed RDF materialization is discussed, followed by RDBMS-to-RDF mapping approaches and tools. Finally, various RDF tools (including ontology editors, RDF-izers, and RDF APIs) are presented.

URL: http://www.slideshare.net/marin_dimitrov/rdf-sparql-and-semantic-repositories
Keywords: SPARQL, Web Ontology Language (OWL), RDF Schema, Semantic repositories, MapReduce, RDB2RDF
Author: Dimitrov, Marin
Publisher: Ontotext
Date created: 2010-09-15 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P90M
Educational use: instruction
Educational audience: student

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

Abi Evans — Tue, 15 Sep 2015 02:33:10 +0000

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 allow them to fruitfully explore new ontologies that they may encounter. Also addressed was gaining fluency in the use and abuse of OWL by examining features, limitations, and workarounds in real contexts, as well as gaining an understanding of the impact of future extensions of OWL. NOTE: This lecture given by Bijan Parsia is combined with Bernardo Cuenca Grau and will encompass Part 2, Part 5, Part 6, Part 7 of the complete lecture. Part 1, 3 and 4 of this lecture can be found at Bernardo Cuenca Grau's lecture.

URL: http://videolectures.net/iswc06_parsia_uofw/
Keywords: Ontology, Web Ontology Language (OWL), Swoop
Author: Parsia, Bijan
Publisher: videolectures.net
Date created: 2007-02-05 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P2H30M
Educational use: instruction
Educational audience: generalPublic
Interactivity type: expositive

An Introduction to OWL

Abi Evans — Tue, 15 Sep 2015 02:33:10 +0000

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 issues associated with the Web ontology languages, RDF, RDF Schema and OWL. By the end of this presentation viewers will have gained a basic understanding of the principles underlying OWL. Also quickly covers the basics of the RDF Data Model.

URL: http://videolectures.net/iswc07_bechhofer_iowl/
Keywords: RDF Schema, Web Ontology Language (OWL), Ontology, Description Logics, Inferencing
Author: Bechhofer, Sean
Publisher: videolectures.net
Date created: 2007-11-22 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P45M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive

RDF Schema

Abi Evans — Tue, 15 Sep 2015 02:33:10 +0000

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 inferencing limitations and lack of consistency checks. Briefly discusses how OWL is even more robust than RDFS for inferencing. Also available as PDF: http://videolectures.net/site/normal_dl/tag=612401/sssc2011_norton_rdf_01.pdf

URL: http://videolectures.net/sssc2011_norton_rdf/
Keywords: RDF Schema, Class, Property, Web Ontology Language (OWL), Inferencing
Author: Norton, Barry
Publisher: videolectures.net
Date created: 2011-09-19 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M
Educational use: professionalDevelopment
Educational audience: student
Interactivity type: expositive

Answering Queries Over OWL Ontologies with SPARQL

Abi Evans — Tue, 15 Sep 2015 02:33:09 +0000

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 and suggests ways to make SPARQL-to-OWL queries more efficient. Options include class-property hierarchy exploitation, as well as exploiting domain and range restrictions. Very complex stuff- a version with audio would be most helpful.

URL: http://webont.org/owled/2011/presentations/4Kollia.pdf
Keywords: Web Ontology Language (OWL), OWL Reasoner, Basic Graph Pattern (BGP), Direct Semantics (DS)
Author: Grove, Mike
Date created: 2011-06-06 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P30M
Educational use: instruction
Educational audience: student
Interactivity type: expositive

RDF Database Systems: Triples Storage and SPARQL Query Processing

Abi Evans — Tue, 15 Sep 2015 02:33:09 +0000

Available in print or EBook, this resource professes to "distill everything you need to know to effectively use or design an RDF database". This book provides the necessary background information about the Semantic Web, the RDF graph data model, RDF Schema, SPARQL, and OWL within (and outside) the context of relational database management and NoSQL systems. The reader will learn about the prevailing RDF triples solutions for both relational and non-relational databases. Includes guidelines and solutions for storing RDF data, processing SPARQL queries, and evaluating which approaches and systems to use when developing Semantic Web applications – both commercial and open-source systems are described.

URL: http://store.elsevier.com/product.jsp?isbn=9780127999579&pagename=search
Keywords: Query processing, Materialization, Reasoning, Triple store, Query federation
Author: Cure, Olivier
Publisher: Morgan Kaufmann
Date created: 2014-11-26 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10H
Educational use: instruction
Educational audience: professional
Interactivity type: expositive