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OWL 2 Reference Card released

October 18th, 2009

We’re pleased to announce the OWL 2 Reference Card [1]. The Card is meant to be a “cheat sheet” of OWL 2 features printable on a single piece of paper (on both sides). It is based on the OWL 2 Quick Reference Guide [1], which is now a Proposed Recommendation [2] in the OWL 2 Web Ontology Language document set.

Background: OWL 2 [4] is an extension to OWL 1 with a few new functionalities. Some of the new features are syntactic sugar (e.g., disjoint union of classes) while others offer new expressivity, including:

* keys;
* property chains;
* richer datatypes, data ranges;
* qualified cardinality restrictions;
* asymmetric, reflexive, and disjoint properties; and
* enhanced annotation capabilities

Comments and suggestions to the Card are welcome (please send to public-owl-comments@w3.org)

[1] http://www.w3.org/2007/OWL/refcard

[2] http://www.w3.org/2007/OWL/wiki/Quick_Reference_Guide

[3] http://www.w3.org/TR/2009/PR-owl2-quick-reference-20090922/

[4] http://www.w3.org/TR/owl2-overview/

Jie Bao

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