SKOS Simple Knowledge Organization System eXtension for Labels (SKOS-XL) Namespace Document - HTML Variant

17th March 2009 "Candidate Recommendation" Edition

This version:
Latest version:
Alistair Miles, STFC Rutherford Appleton Laboratory / University of Oxford
Sean Bechhofer, University of Manchester

Status of this Document

This document describes the schema available from the SKOS-XL namespace. The document is still under development and content may be subject to change.


The Simple Knowledge Organization System (SKOS) is a common data model for sharing and linking knowledge organization systems via the Semantic Web. SKOS-XL defines an extension for the Simple Knowledge Organization System, providing additional support for describing and linking lexical entities.This document provides a brief description of the SKOS-XL vocabulary.

For detailed information about the SKOS Recommendation, please consult the SKOS Reference [SKOS-REFERENCE] or the SKOS Primer [SKOS-PRIMER].

SKOS-XL Schema Overview

The following table gives a non-normative overview of the SKOS-XL vocabulary; it replicates a table found in the (normative) SKOS Reference [SKOS-REFERENCE]. This document can be referenced directly, by its own URI http://www.w3.org/TR/skos-reference/skos-xl.html, or indirectly, by content negotiation from the SKOS-XL namespace URI http://www.w3.org/2008/05/skos-xl# as described in Appendix C of SKOS Reference [SKOS-REFERENCE].

See also the SKOS-XL Namespace Document - RDF/XML Variant [SKOS-XL-RDF].


URI: http://www.w3.org/2008/05/skos-xl#Label
Definition: Section B.2. The skosxl:Label Class
Label: Label
Super-classes: restriction on skosxl:literalForm cardinality exactly 1
Disjoint classes: skos:Collection


URI: http://www.w3.org/2008/05/skos-xl#altLabel
Definition: Section B.3. Preferred, Alternate and Hidden skosxl:Labels
Label: alternative label
Range: skosxl:Label
URI: http://www.w3.org/2008/05/skos-xl#hiddenLabel
Definition: Section B.3. Preferred, Alternate and Hidden skosxl:Labels
Label: hidden label
Range: skosxl:Label
URI: http://www.w3.org/2008/05/skos-xl#labelRelation
Definition: Section B.4. Links Between skosxl:Labels
Label: label relation
Domain: skosxl:Label
Range: skosxl:Label
Other characteristics: Symmetric
URI: http://www.w3.org/2008/05/skos-xl#literalForm
Definition: Section B.2. The skosxl:Label Class
Label: literal form
Domain: skosxl:Label
URI: http://www.w3.org/2008/05/skos-xl#prefLabel
Definition: Section B.3. Preferred, Alternate and Hidden skosxl:Labels
Label: preferred label
Range: skosxl:Label


SKOS Reference, Alistair Miles, Sean Bechhofer, Editors. Latest version available at http://www.w3.org/TR/skos-reference.
SKOS Primer, Antoine Isaac, Ed Summers, Editors. Latest version available at http://www.w3.org/TR/skos-primer.
SKOS-XL Namespace - RDF/XML Variant. Latest version available at http://www.w3.org/TR/skos-reference/skos-xl.rdf


This document is the result of extensive discussions within the W3C's Semantic Web Deployment Working Group. The document drew on the experiences of earlier groups and projects including SWAD-Europe and W3C's Semantic Web Best Practices and Deployment Working Group. Members of the W3C's public-esw-thes also made valuable contributions.

$Revision: 1.4 $ of $Date: 2009/05/27 09:01:35 $