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SWD Deliverables

Inside: SKOS | Best Practice Recipes | Vocab Management | Semantic Integration Note | RDFa

Ready reference: SWD home page | SWD charter | SWD mailing list | SKOS public discussion

See "Process for Issues Lists" ( for a description of issues are raised and resolved with respect to the following deliverables using the issue-tracking tool "Tracker".


According to charter

As of March 2008


Month 4, Jan 2007: WG Note on SKOS requirements

Month 5, Feb 2007: Updated SKOS WD

Month 8, May 2007: WD Use Cases/Requirements

Month 9, Jun 2007: Updated SKOS WD

Month 13, Oct 2007: Last Call SKOS WD

Month 15, Dec 2007: SKOS Candidate Recommendation

Month 15, Dec 2007: SKOS Reference ED

Month 16, Jan 2008: SKOS Reference WD

Month 17, Feb 2008: SKOS Primer WD

Month 18, Mar 2008: SKOS Proposed Recommendation

Month 22, 1 Jul 2008: Last Call SKOS Reference

Month 23, Aug 2008: Reference WD

Month 23, Aug 2008: Primer WD

Month 24, 15 Sep 2008: CR SKOS Reference

Month 30, March 2009: Reference CR

Month 30, March 2009: Primer WD

Month 26, 1 Nov 2008: PR SKOS Reference (and implementation report)

Month 32, May 2009: Implementation Report

Month 33, June 2009: Reference PR

Month 27, 31 Dec 2008: SKOS Reference as Rec

Month 35, Aug 2009: Reference Rec

Month 27, 31 Dec 2008: SKOS Primer as Note

Month 35, Aug 2009: Primer Note

Month 35, Aug 2009: Use Cases/Requirements Note

* SKOS Candidate Recommendation to include at least SKOS Reference, and ideally also SKOS Primer if available.

The following are proposed deliverables for SKOS:

Tracking SKOS issues

SKOS issues formally under consideration can be tracked from the Web page, where issues are linked to relevant mailing-list postings automatically and on an ongoing basis.

SKOS issues may be proposed using optional the [SkosProposalTemplate SKOS Proposal Template] in accordance with the "Process for Issues Lists" (

SKOS Use Cases and Requirements [ACTIVE]

This document describes use cases and requirements, written for anyone interested in the design and functionality of SKOS.


This document provides an initial set of test cases to establish the sufficiency of SKOS for representing various examples of concept schemes. Also provides an additional set of test cases for applications implementing the SKOS specification, to demonstrate conformance with respect to valid inferences and consistency checking. Written for the designers of SKOS and for designers and implementers of SKOS applications.

SKOS Reference (Normative Specification) [ACTIVE]

Abstract: This document defines the Simple Knowledge Organization System (SKOS), a common data model for sharing and linking knowledge organization systems via the Semantic Web. // Many knowledge organization systems, such as thesauri, taxonomies, classification schemes and subject heading systems, share a similar structure, and can be used in similar applications. SKOS captures much of this similarity and makes it explicit, to enable data and technology sharing across diverse applications. // The SKOS data model provides a standard, low-cost migration path for porting existing knowledge organization systems to the Semantic Web. SKOS also provides a light weight, intuitive language for developing and sharing new knowledge organization systems. It can be used on its own, or in combination with formal knowledge representation languages like the Web Ontology Language (OWL). // This document is the normative specification of the Simple Knowledge Organization System. It is intended for readers who are involved in the design and implementation of information systems, and who already have a good understanding of Semantic Web technology, especially RDF and OWL. // For an informative guide to using SKOS, see the SKOS Primer.


Abstract: SKOS — Simple Knowledge Organization System — provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other types of controlled vocabulary. As an application of the Resource Description Framework (RDF) SKOS allows concepts to be documented, linked and merged with other data, while still being composed, integrated and published on the World Wide Web.// This document is an implementors guide for those who would like to represent their concept scheme using SKOS.// In basic SKOS, conceptual resources (concepts) can be identified using URIs, labelled with strings in one or more natural languages, documented with various types of notes, semantically related to each other in informal hierarchies and association networks, and aggregated into distinct concept schemes.// In advanced SKOS, conceptual resources can be mapped to conceptual resources in other schemes and grouped into labelled or ordered collections. Concept labels can also be related to each other. Finally, the SKOS vocabulary itself can be extended to suit the needs of particular communities of practice.// This document is a companion to the SKOS Reference, which gives the normative reference on SKOS.

Other FAQ-like Notes [NOT ACTIVE]

One or more documents, each being much like an extended FAQ entry, e.g. "How do I publish a thesaurus in the Semantic Web?"

Starting points:

Other relevant resources & background material:

2. Best Practice Recipes [ACTIVE]

According to (charter)

As of March 2008


Month 3, Dec 2006: Updated WD, Recipes

Month 7, Apr 2007: Last call Recipes WD

Month 15, Dec 2007: Editor's Draft 3-Dec

Month 16, Jan 2008: Editor's Draft 21-Jan

Month 16, Jan 2008: Working Draft 23-Jan

Month 18, Mar 2008: Editor's Draft 31-Mar

Month 19, Apr 2008: Editor's Draft 21-Apr (updated 15-May)

Month 18, 31 Mar 2008: New WD

Month 20, 1 May 2008: Note published

3. Vocabulary Management [ACTIVE]

According to (charter)

As of March 2008


Month 6, Mar 2007: WD Vocabulary Management

Month 13, Oct 2007: Editors' Draft

Month 15, Dec 2007: Last Call WD Vocabulary Management

Month 17, Feb 2008: Editor's Draft

Month 17, Feb 2008: NOTE Vocabulary Management

Month 18, 15 Mar 2008: ED available for internal review

16 Mar 2008: Editor's Draft

Month 18, 31 Mar 2008: WD published

Month 20, 1 May 2008: Note published

4. Semantic Integration [NOT ACTIVE]

According to (charter)


Month 4, Jan 2007: Updated WD Semantic Integration

Month 7, Apr 2007: NOTE on Semantic Integration

5. RDFa

According to (charter)

As of March 2008


Month 1.5, Nov 2006: WD Use Cases

Month 2, Nov 2006: Updated Primer WD

Month 3, Dec 2006: First WD XHTML 1.1 module

Month 6, Mar 2007: Updated Primer WD

Month 6, Mary 2007: RDFa Use Cases WD

Month 6, Mar 2007: Last Call WD XHTML 1.1 module

Month 13: Oct 2007 RDFa Primer WD

Month 17: Feb 2008 RDFa Syntax Last Call WD

Month 18: Mar 2008 RDFa Primer WD

Month 19, 30 Apr 2008: Implementation report

Month 19, Apr 2008: RDFa Syntax as PR

Month 19, 30 Apr 2008: Updated Primer, frozen

Month 20, May 2008: RDFa Syntax as Rec

See for details.

Charter period: 1 October 2006 to 1 June 2008 (20 months)

Month 1: Oct 2006

Month 6: Mar 2007

Month 11: Aug 2007

Month 16: Jan 2008

Month 21: Jun 2008

Month 26: Nov 2008

Month 2: Nov 2006

Month 7: Apr 2007

Month 12: Sep 2007

Month 17: Feb 2008

Month 22: Jul 2008

Month 27: Dec 2008

Month 3: Dec 2006

Month 8: May 2007

Month 13: Oct 2007

Month 18: Mar 2008

Month 23: Aug 2008

Month 4: Jan 2006

Month 9: Jun 2007

Month 14: Nov 2007

Month 19: Apr 2008

Month 24: Sep 2008

Month 5: Feb 2007

Month 10: Jul 2007

Month 15: Dec 2007

Month 20: May 2008

Month 25: Oct 2008