OWL 2 Web Ontology Language
Quick Reference Guide

W3C Working Draft 21 April11 June 2009

This version:

http://www.w3.org/TR/2009/WD-owl2-quick-reference-20090421/http://www.w3.org/TR/2009/WD-owl2-quick-reference-20090611/

Latest version:

http://www.w3.org/TR/owl2-quick-reference/

Previous version:

http://www.w3.org/TR/2008/WD-owl2-quick-reference-20081202/ Authors:http://www.w3.org/TR/2009/WD-owl2-quick-reference-20090421/ (color-coded diff)

Editors:

Jie Bao, Rensselaer Polytechnic Institute

Elisa F. Kendall, Sandpiper Software, Inc.

Deborah L. McGuinness, Rensselaer Polytechnic Institute

Peter F. Patel-Schneider, Bell Labs Research, Alcatel-Lucent

Contributors:

Li Ding, Rensselaer Polytechnic Institute

Ankesh Khandelwal, Rensselaer Polytechnic Institute

Peter F. Patel-Schneider , Bell Labs Research, Alcatel-LucentThis document is also available in these non-normative formats: PDF version.

---

Copyright © 2009 W3C^® (MIT, ERCIM, Keio), All Rights Reserved. W3C liability, trademark and document use rules apply.

Abstract

his document provides a quick reference guide to the OWL 2 language, similar to what was provided in the Language Synopsis section of the OWL Web Ontology Language Overview . Inspiration for this effort includes work by the ebiquity Research Group at the University of Maryland Baltimore County (UMBC) on earlier versions of a Reference Card for the Semantic Web . A draft printable version is available , but it is obsolete with respect to the current wiki version.Status of this Document

May Be Superseded

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.

Summary of Changes

Last Call

The content has been updated to reflect changes inWorking Group believes this document is now essentially done, so this is a "Last Call" draft. The language specification.document is not expected to change significantly, going forward.

Please Comment By 12 May30 July 2009

The OWL Working Group seeks public feedback on this Working Draft. Please send your comments to public-owl-comments@w3.org (public archive). If possible, please offer specific changes to the text that would address your concern. You may also wish to check the Wiki Version of this document and see if the relevant text has already been updated.

No Endorsement

Publication as a Working Draft does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

Patents

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. This document is informative only. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

Names in OWL 2 are IRIs, often written in a little bit disturbing, maybe try other typographic trick, e.g., some lighter colour. whether we could findshorthand prefix:local_name, where prefix: is a trick soprefix name that we can switch on/off highlight the OWL 1/2 differencesexpands to an IRI, and local_name is the '?' links that refer toremainder of the NF&R. 1 Namespacesname. The standard namespaces and prefixesprefix names in OWL 2 areare:

2 OWL 2 constructs and axioms Features in bold are only available in OWL 2. Each table has columns: 1st: Feature's name and link to Primer and New Features and Rationale (if applicable)(as "(N)") 2nd: functional syntax and link to Syntax 3rd: RDF syntax with link to Mapping to RDF GraphsWe use notation conventions in the following notation conventions: unless stated otherwise, "C" is an OWL class, "D" is atable*:

For an OWL 2 DL ontology, there are some global restrictions on axioms.

In the following tables the first column provides links to the Primer (if applicable) and the 2nd column provides links to the Functional Syntax.

2.1 ClassesClass Expressions

Predefined and Named Classes

Boolean Connectives and Enumeration of Individuals

Object Property Restrictions

(with C)Data Property Restrictions

(with D)Restrictions Using n-ary Data Range

2.2.1Object Property Expressions

Data Property Expressions

The starting point for the development of OWL 2 was the OWL1.1 member submission, itself a result of user and developer feedback, and in particular of information gathered during the OWL Experiences and Directions (OWLED) Workshop series. The working group also considered postponed issues from the WebOnt Working Group.

This document has been produced by the OWL Working Group (see below), and its contents reflect extensive discussions within the Working Group as a whole. The editors extend special thanks to Bernardo Cuenca Grau (Oxford University), Christine Golbreich (Université de Versailles St-Quentin and LIRMM), Ivan Herman (W3C/ERCIM), and Bijan Parsia (University of Manchester) and Peter F. Patel-Schneider (Bell Labs Research, Alcatel-Lucent)for their thorough reviews.

The regular attendees at meetings of the OWL Working Group at the time of publication of this document were: Jie Bao (RPI), Diego Calvanese (Free University of Bozen-Bolzano), Bernardo Cuenca Grau (Oxford University), Martin Dzbor (Open University), Achille Fokoue (IBM Corporation), Christine Golbreich (Université de Versailles St-Quentin and LIRMM), Sandro Hawke (W3C/MIT), Ivan Herman (W3C/ERCIM), Rinke Hoekstra (University of Amsterdam), Ian Horrocks (Oxford University), Elisa Kendall (Sandpiper Software), Markus Krötzsch (FZI), Carsten Lutz (Universität Bremen), Deborah L. McGuinness (RPI), Boris Motik (Oxford University), Jeff Pan (University of Aberdeen), Bijan Parsia (University of Manchester), Peter F. Patel-Schneider (Bell Labs Research, Alcatel-Lucent), Sebastian Rudolph (FZI), Alan Ruttenberg (Science Commons), Uli Sattler (University of Manchester), Michael Schneider (FZI), Mike Smith (Clark & Parsia), Evan Wallace (NIST), andZhe Wu (Oracle Corporation).Corporation), and Antoine Zimmermann (DERI Galway). We would also like to thank past members of the working group: Jeremy Carroll, Jim Hendler, Vipul Kashyap.