SKOS
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<h1 id="firstHeading" class="firstHeading">SKOS</h1>
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<h3 id="siteSub">From Semantic Web Standards</h3>
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<ul><li> Publication date: 2009-08-18
</li><li> Created by: <a href="http://www.w3.org/2001/sw/#swd" class="external text" title="http://www.w3.org/2001/sw/#swd" rel="nofollow">Semantic Web Deployment Working Group</a>
</li><li> List of documents at: <a href="http://www.w3.org/standards/techs/skos" class="external free" title="http://www.w3.org/standards/techs/skos" rel="nofollow">http://www.w3.org/standards/techs/skos</a>
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<a name="Simple_Knowledge_Organization_System_.28SKOS.29" id="Simple_Knowledge_Organization_System_.28SKOS.29"></a><h1> <span class="mw-headline"> Simple Knowledge Organization System (SKOS) </span></h1>
<a name="Overview" id="Overview"></a><h2> <span class="mw-headline"> Overview </span></h2>
<p>SKOS is a common data model for sharing and linking knowledge organization systems via the Web.
</p><p>Many knowledge organization systems, such as thesauri, taxonomies, classification schemes and subject heading systems, share a similar structure, and are used in similar applications. SKOS captures much of this similarity and makes it explicit, to enable data and technology sharing across diverse applications.
</p><p>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 lightweight, intuitive language for developing and sharing new knowledge organization systems. It may be used on its own, or in combination with formal knowledge representation languages such as the <a href="/2001/sw/wiki/OWL" title="OWL">Web Ontology language (OWL)</a>.
</p>
<a name="Recommended_Reading" id="Recommended_Reading"></a><h2> <span class="mw-headline"> Recommended Reading </span></h2>
<p>The official <a href="http://www.w3.org/standards/techs/skos" class="external text" title="http://www.w3.org/standards/techs/skos" rel="nofollow">SKOS</a> documents, published in 2009, include a <a href="http://www.w3.org/TR/2009/NOTE-skos-primer-20090818/" class="external text" title="http://www.w3.org/TR/2009/NOTE-skos-primer-20090818/" rel="nofollow">SKOS Primer</a>. The SWD Working Group, that published this Recommendation is now closed.
</p><p>A number of textbooks have been published on <a href="/2001/sw/wiki/RDF" title="RDF">RDF</a>, RDFS, and on Semantic Web in general. Please, refer to a <a href="/2001/sw/wiki/Books" title="Books">separate page</a> listing some of those, as maintained by the community. That list also includes references to conference proceedings and article collections that might be of general interest.
</p>
<a name="Welcome_to_the_SKOS_community_wiki.21" id="Welcome_to_the_SKOS_community_wiki.21"></a><h1> <span class="mw-headline"> Welcome to the SKOS community wiki! </span></h1>
<p>This site is a collaborative space open to the entire SKOS community. It complements the official <a href="http://www.w3.org/2004/02/skos" class="external text" title="http://www.w3.org/2004/02/skos" rel="nofollow">W3C SKOS web site</a> and the <a href="http://lists.w3.org/Archives/Public/public-esw-thes/" class="external text" title="http://lists.w3.org/Archives/Public/public-esw-thes/" rel="nofollow">SKOS mailing list</a>.
</p><p>It replaces replacing the old <a href="http://esw.w3.org/topic/SkosDev" class="external text" title="http://esw.w3.org/topic/SkosDev" rel="nofollow">ESW SkosDev wiki</a>, taking into account that SKOS is now an <a href="http://www.w3.org/News/2009#item140" class="external text" title="http://www.w3.org/News/2009#item140" rel="nofollow">official W3C standard</a> and has evolved since the SkosDev wiki was started.
</p><p>Your contributions are most welcome!
</p><p><b>Content</b>
</p>
<ul><li> <a href="/2001/sw/wiki/SKOS/Docs" title="SKOS/Docs">Specifications, Documentation and References</a>
</li><li> <a href="/2001/sw/wiki/SKOS/RDF_Vocabularies" title="SKOS/RDF Vocabularies">RDF Vocabularies</a>
</li><li> <a href="/2001/sw/wiki/SKOS/Cases" title="SKOS/Cases">Case Studies</a>
</li><li> <a href="/2001/sw/wiki/SKOS/Datasets" title="SKOS/Datasets">Find & Share SKOS Data</a>
</li><li> <a href="/2001/sw/wiki/SKOS/LegacyTools" title="SKOS/LegacyTools">Legacy links to Software Applications and Tools</a>
</li><li> <a href="/2001/sw/wiki/SKOS/FAQs" title="SKOS/FAQs">Frequently Asked Questions</a>
</li><li> <a href="/2001/sw/wiki/SKOS/Issues" title="SKOS/Issues">Proposals & Issues</a>
</li><li> <a href="/2001/sw/wiki/SKOS/Organizations" title="SKOS/Organizations">Relevant Organizations</a>
</li><li> <a href="/2001/sw/wiki/SKOS/Contact" title="SKOS/Contact">Mailing List and Contact</a>
</li></ul>
<p><br />
</p>
<a name="Tools_that_are_listed_as_relevant_to_SKOS" id="Tools_that_are_listed_as_relevant_to_SKOS"></a><h1> <span class="mw-headline"> Tools that are listed as relevant to SKOS </span></h1>
<p>(Note that you can browse tools per <a href="/2001/sw/wiki/Category:Tool" title="Category:Tool">tool categories</a> or <a href="/2001/sw/wiki/Category:Programming_Language" title="Category:Programming Language">programming languages</a>, too.)
</p>
<a name="Last_modified_and.2For_added" id="Last_modified_and.2For_added"></a><h2> <span class="mw-headline"> Last modified and/or added </span></h2>
<p>The description of the following tools have been added and/or modified most recently.
</p>
<ul>
<li><a href="/2001/sw/wiki/STW_Web_Services" title="STW Web Services">STW Web Services</a> (last modified: 10 November 2011)</li>
<li><a href="/2001/sw/wiki/SKOS2OWL" title="SKOS2OWL">SKOS2OWL</a> (last modified: 4 November 2011)</li>
<li><a href="/2001/sw/wiki/SKOS_WS" title="SKOS WS">SKOS_WS</a> (last modified: 12 October 2011)</li>
<li><a href="/2001/sw/wiki/PoolParty" title="PoolParty">PoolParty</a> (last modified: 6 October 2011)</li>
<li><a href="/2001/sw/wiki/Wordpress_PoolParty_Thesaurus" title="Wordpress PoolParty Thesaurus">Wordpress PoolParty Thesaurus</a> (last modified: 6 October 2011)</li>
</ul>
<p><br />
</p>
<a name="All_relevant_tools" id="All_relevant_tools"></a><h2> <span class="mw-headline"> All relevant tools </span></h2>
<p>This is a list of all tools listed on this wiki, and that are marked as relevant to SKOS.
</p>
<ul>
<li><a href="/2001/sw/wiki/ASKOSI" title="ASKOSI">ASKOSI - Application Services for Knowledge Organization and Systems Integration</a> (api, validator, browser). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/ClioPatria" title="ClioPatria">ClioPatria</a> (triple store, programming environment, reasoner, rule reasoner). Directly usable from Prolog, C
</li>
<li><a href="/2001/sw/wiki/HIVE" title="HIVE">Helping with Interdisciplinary Vocabulary Engineering (HIVE)</a> (editor, extractor).
</li>
<li><a href="/2001/sw/wiki/IQvoc" title="IQvoc">iQvoc</a> (editor, api).
</li>
<li><a href="/2001/sw/wiki/Lexaurus" title="Lexaurus">Lexaurus</a> (editor, registry).
</li>
<li><a href="/2001/sw/wiki/MMI" title="MMI">MMI Ontology Registry and Repository</a> (api, editor, registry).
</li>
<li><a href="/2001/sw/wiki/Mondeca_ITM" title="Mondeca ITM">Intelligent Topic Manager</a> (triple store, editor). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/Mulgara" title="Mulgara">Mulgara Semantic Store</a> (triple store). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/OWLtoSKOS" title="OWLtoSKOS">OWLtoSKOS</a> (converter).
</li>
<li><a href="/2001/sw/wiki/Onki" title="Onki">Finnish Ontology Library Service ONKI</a> (api, visualizer, registry). Directly usable from Java, Javascript
</li>
<li><a href="/2001/sw/wiki/OpenMetadataRegistry" title="OpenMetadataRegistry">Open Metadata Registry</a> (editor, registry).
</li>
<li><a href="/2001/sw/wiki/PoolParty" title="PoolParty">PoolParty</a> (editor, sparql endpoint, api, tagging, visualizer). Directly usable from Java, Javascript
</li>
<li><a href="/2001/sw/wiki/PoolParty_Extractor" title="PoolParty Extractor">PoolParty Extractor (PPX)</a> (converter, rdf generator, extractor, tagging, api). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/PoolParty_Semantic_Search" title="PoolParty Semantic Search">PoolParty Semantic Search(PPS)</a> (semantic search server, programming environment, api). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/QSKOS" title="QSKOS">qSKOS - Quality Criteria for SKOS Vocabularies</a> (validator). Directly usable from Ruby
</li>
<li><a href="/2001/sw/wiki/SKOS_API" title="SKOS API">SKOS API</a> (api). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/SKOS_Consistency_Checker" title="SKOS Consistency Checker">SKOS Consistency Checker</a> (validator).
</li>
<li><a href="/2001/sw/wiki/SKOS_WS" title="SKOS WS">SKOS_WS</a> (api). Directly usable from Javascript, PHP, Java, Ruby, .NET
</li>
<li><a href="/2001/sw/wiki/SKOS2GenTax" title="SKOS2GenTax">SKOS2GenTax</a> (converter).
</li>
<li><a href="/2001/sw/wiki/SKOS2OWL" title="SKOS2OWL">SKOS2OWL</a> (converter, rdf generator).
</li>
<li><a href="/2001/sw/wiki/SKOSEd" title="SKOSEd">SKOSEd</a> (editor, validator, api). Directly usable from Java
</li>
<li><a href="/2001/sw/wiki/STW_Web_Services" title="STW Web Services">STW Web Services</a> (api). Directly usable from Every language able to deal with JSON and/or XML over the web
</li>
<li><a href="/2001/sw/wiki/SkosReader" title="SkosReader">SKOS Reader</a> (special browser).
</li>
<li><a href="/2001/sw/wiki/Skosify" title="Skosify">Skosify</a> (converter, validator).
</li>
<li><a href="/2001/sw/wiki/TemaTres" title="TemaTres">TemaTres</a> (api, editor, extractor, visualizer, tagging). Directly usable from PHP, Javascript,
</li>
<li><a href="/2001/sw/wiki/Special:Ask/-5B-5BCategory:Tool-5D-5D-20-5B-5BSW-20Technology::SKOS-5D-5D/-3FTool-20Name%3D/-3FCategory%3D/-3FProgramming-20language%3D/format%3Dul/template%3DToolDisplayLinkWithNameWithcategoryAndLanguage/link%3Dnone/columns%3D1" title="Special:Ask/-5B-5BCategory:Tool-5D-5D-20-5B-5BSW-20Technology::SKOS-5D-5D/-3FTool-20Name=/-3FCategory=/-3FProgramming-20language=/format=ul/template=ToolDisplayLinkWithNameWithcategoryAndLanguage/link=none/columns=1"> … further results</a></li>
</ul>
<p><br />
</p><p><b>Note: if you are interested to add your tool, please consult the separate <a href="/2001/sw/wiki/Tool_Contributors" title="Tool Contributors">Tool Contributors’ page</a>. This is especially valuable if your tool is only listed on the deprecated [<a href="http://www.w3.org/2001/sw/wiki/SKOS/LegacyTools|deprecated" class="external text" title="http://www.w3.org/2001/sw/wiki/SKOS/LegacyTools|deprecated" rel="nofollow">tool page</a>].</b>
</p>
<a name="Additional_material" id="Additional_material"></a><h1> <span class="mw-headline"> Additional material </span></h1>
<ul><li> <a href="/2001/sw/wiki/White_paper_Vocabulary_Management" title="White paper Vocabulary Management">White paper Vocabulary Management</a>
</li><li> <a href="/2001/sw/wiki/SKOS_Repository_REST_http_API" title="SKOS Repository REST http API">SKOS Repository REST http API</a>
</li></ul>
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<div class="smwfact"><span class="smwfactboxhead">Facts about <span class="swmfactboxheadbrowse"><a href="/2001/sw/wiki/Special:Browse/SKOS" title="Special:Browse/SKOS">SKOS</a></span></span><span class="smwrdflink"><span class="rdflink"><a href="/2001/sw/wiki/Special:ExportRDF/SKOS" title="Special:ExportRDF/SKOS">RDF feed</a></span></span><table class="smwfacttable">
<tr><td class="smwpropname"><a href="/2001/sw/wiki/Property:Creator" title="Property:Creator">Creator</a></td><td class="smwprops"><a href="http://www.w3.org/2001/sw/#swd" class="external free" title="http://www.w3.org/2001/sw/#swd" rel="nofollow">http://www.w3.org/2001/sw/#swd</a>  <span class="smwsearch"><a href="/2001/sw/wiki/Special:SearchByProperty/Creator/http:-2F-2Fwww.w3.org-2F2001-2Fsw-2F-23swd" title="Special:SearchByProperty/Creator/http:-2F-2Fwww.w3.org-2F2001-2Fsw-2F-23swd">+</a></span></td></tr><tr><td class="smwpropname"><a href="/2001/sw/wiki/Property:Date" title="Property:Date">Date</a></td><td class="smwprops">18 August 2009  <span class="smwsearch"><a href="/2001/sw/wiki/Special:SearchByProperty/Date/18-20August-202009" title="Special:SearchByProperty/Date/18-20August-202009">+</a></span></td></tr><tr><td class="smwpropname"><a href="/2001/sw/wiki/Property:Description" title="Property:Description">Description</a></td><td class="smwprops">SKOS is a common data model for sharing and linking knowledge organization systems via the Web.  <span class="smwsearch"><a href="/2001/sw/wiki/Special:SearchByProperty/Description/SKOS-20is-20a-20common-20data-20model-20for-20sharing-20and-20linking-20knowledge-20organization-20systems-20via-20the-20Web." title="Special:SearchByProperty/Description/SKOS-20is-20a-20common-20data-20model-20for-20sharing-20and-20linking-20knowledge-20organization-20systems-20via-20the-20Web.">+</a></span></td></tr><tr><td class="smwpropname"><a href="/2001/sw/wiki/Property:SameAs" title="Property:SameAs">SameAs</a></td><td class="smwprops"><a href="http://www.w3.org/2002/01/tr-automation/techs#skos" class="external free" title="http://www.w3.org/2002/01/tr-automation/techs#skos" rel="nofollow">http://www.w3.org/2002/01/tr-automation/techs#skos</a>  <span class="smwsearch"><a href="/2001/sw/wiki/Special:SearchByProperty/SameAs/http:-2F-2Fwww.w3.org-2F2002-2F01-2Ftr-2Dautomation-2Ftechs-23skos" title="Special:SearchByProperty/SameAs/http:-2F-2Fwww.w3.org-2F2002-2F01-2Ftr-2Dautomation-2Ftechs-23skos">+</a></span></td></tr><tr><td class="smwpropname"><a href="/2001/sw/wiki/Property:SeeAlso" title="Property:SeeAlso">SeeAlso</a></td><td class="smwprops"><a href="http://www.w3.org/standards/techs/skos" class="external free" title="http://www.w3.org/standards/techs/skos" rel="nofollow">http://www.w3.org/standards/techs/skos</a>  <span class="smwsearch"><a href="/2001/sw/wiki/Special:SearchByProperty/SeeAlso/http:-2F-2Fwww.w3.org-2Fstandards-2Ftechs-2Fskos" title="Special:SearchByProperty/SeeAlso/http:-2F-2Fwww.w3.org-2Fstandards-2Ftechs-2Fskos">+</a></span></td></tr></table></div>
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