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               <h1 class="title">SKOS Current Status</h1>
               <ul class="w3c_toc">
   <li>
      <a href="#completed">completed&#xA0;work</a>
	  &#x2014;&#xA0;including&#xA0;<a href="#stds">standards</a>
      <span class="bullet">&#x2022; </span>
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      <a href="#obsolete">obsolete&#xA0;specifications</a>
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      <p id="w3c_toggle_include" class="default_open intro tPadding">This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title
links to the most recent version of a document.
     For related introductory information, see: <a href="http://www.w3.org/standards/semanticweb/ontology">Vocabularies</a>.</p>
      <h2 id="completed">Completed Work</h2>
      <p>
         <a href="/TR/tr-technology-stds">W3C Recommendations</a> have
	been reviewed by W3C Members, by software developers, and by other
	W3C groups and interested parties, and are endorsed by the
	Director as Web Standards. Learn more about the <a href="/Consortium/Process/tr#rec-advance">W3C Recommendation
	Track</a>.</p>
      <p>
         <a href="/2005/10/Process-20051014/tr.html#q75">Group Notes</a> are <em>not</em> standards and do not
	have the same level of W3C endorsement.</p>
      <h3 id="stds">Standards</h3>
      <div class="data lMargin rMargin">
         <table class="w3c_spec_summary_table">
            <tbody>
               <tr class="lastRow">
                  <td class="table_datecol">
                     <a href="../history/skos-reference" title="SKOS Simple Knowledge Organization System Reference publication history">2009-08-18</a>
                  </td>
                  <td>
                     <h4 class="w3c_status_title">
                        <a title="status is REC" href="http://www.w3.org/TR/2009/REC-skos-reference-20090818/">SKOS Simple Knowledge Organization System Reference</a>
                     </h4>
                     <p class="rec_support_data">
                        <a href="http://www.w3.org/2003/03/Translations/byTechnology?technology=skos-reference">translations</a>
	      &#xB7;
	    <a href="http://www.w3.org/2006/07/SWD/SKOS/reference/20090811-errata">errata</a>
                     </p>
                     <div class="expand_description">
                        <p>This document defines the Simple Knowledge Organization System (SKOS), 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 Web
Ontology language (OWL).</p>
                        <p>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.</p>
                     </div>
                  </td>
               </tr>
            </tbody>
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      <h3 id="notes">Group Notes</h3>
      <div class="data lMargin rMargin">
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               <tr>
                  <td class="table_datecol">
                     <a href="../history/skos-primer" title="SKOS Simple Knowledge Organization System Primer publication history">2009-08-18</a>
                  </td>
                  <td>
                     <h4 class="w3c_status_title">
                        <a title="status is NOTE" href="http://www.w3.org/TR/2009/NOTE-skos-primer-20090818/">SKOS Simple Knowledge Organization System Primer</a>
                     </h4>
                     <div class="expand_description">
                        <p>This document is a companion to the <a href="http://www.w3.org/TR/2009/REC-skos-reference-20090818/" shape="rect">SKOS Reference</a>, which provides the normative reference on SKOS.</p>
                     </div>
                  </td>
               </tr>
               <tr class="lastRow">
                  <td>
                     <a href="../history/skos-ucr" title="SKOS Use Cases and Requirements publication history">2009-08-18</a>
                  </td>
                  <td>
                     <h4 class="w3c_status_title">
                        <a title="status is NOTE" href="http://www.w3.org/TR/2009/NOTE-skos-ucr-20090818/">SKOS Use Cases and Requirements</a>
                     </h4>
                     <div class="expand_description">
                        <p>This document is a companion to the <a href="http://www.w3.org/TR/2009/REC-skos-reference-20090818/" shape="rect">SKOS Reference</a> and the <a href="http://www.w3.org/TR/2009/NOTE-skos-primer-20090818/" shape="rect">SKOS Primer</a>, which respectively provide the normative reference on SKOS and a user guide for those who would like to represent their concept scheme using SKOS.</p>
                     </div>
                  </td>
               </tr>
            </tbody>
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      </div>
      <h2 id="obsolete">Obsolete Specifications</h2>
      <p>These specifications have either been superseded by others,
      or have been abandoned. They remain available for archival
      purposes, but are not intended to be used.</p>
      <h3 id="retired">
	    Retired
	  </h3>
      <div class="data lMargin rMargin">
         <table class="w3c_spec_summary_table">
            <tbody>
               <tr class="lastRow">
                  <td class="table_datecol">
                     <a href="../history/swbp-thesaurus-pubguide" title="Quick Guide to Publishing a Thesaurus on the Semantic Web publication history">2005-05-17</a>
                  </td>
                  <td>
                     <h4 class="w3c_status_title">
                        <a title="status is RETIRED" href="http://www.w3.org/TR/2005/WD-swbp-thesaurus-pubguide-20050517">Quick Guide to Publishing a Thesaurus on the Semantic Web</a>
                     </h4>
                     <div class="expand_description">
                        <p>This document describes in brief how to express the content and structure of a thesaurus, and metadata about a thesaurus, in RDF.  Using RDF allows data to be linked to and/or merged with other RDF data by semantic web applications. The Semantic Web, which is based on the Resource Description Framework (RDF), provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. </p>
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