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typeof="org:WorkingGroup">SPARQL Working Group</a>
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<a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData/">
Linking Open Data Community Project</a>
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<h3 class="category">
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<b>Related Groups at W3C</b>
</span>
</h3>
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<li>
<a href="http://www.w3.org/2011/gld/">Government Linked Data Working Group</a>
</li>
<li>
<a href="http://www.w3.org/2007/eGov/IG/">eGovernment Interest Group</a>
</li>
<li>
<a href="http://www.w3.org/2008/WebVideo/Fragments/">Media Fragments Working
Group</a>
</li>
<li>
<a href="http://www.w3.org/2008/WebVideo/Annotations/">Media Annotations Working
Group</a>
</li>
<li>
<a href="http://www.w3.org/2005/Incubator/lld/">Library Linked Data Incubator
Group</a>
</li>
<li>
<a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData/">
Linking Open Data Community Project</a>
</li>
</ul>
<br />
</div>
<div class="w3c_mainCol">
<h1 id="title" class="title" property="org:name">W3C Semantic Web Activity</h1>
<ul class="w3c_toc">
<li class="toc_prefix">On this page →</li>
<li>
<a href="#publs">publications, interviews</a>
<span class="bullet">•</span>
</li>
<li>
<a href="#pres">presentations</a>
<span class="bullet">•</span>
</li>
<li>
<a href="#agroups">active groups</a>
<span class="bullet">•</span>
</li>
<li>
<a href="#completed">completed groups</a>
<span class="bullet">•</span>
</li>
<li>
<a href="#pastGroups">past groups</a>
</li>
</ul>
<div class="infobar">
<h2>What is the Semantic Web?</h2>
<div class="intro">
<p property="dc:description" datatype="">The
<strong>Semantic Web</strong>provides a common framework that allows
<strong>data</strong> to be shared and reused across application, enterprise, and
community boundaries. It is a collaborative effort led by W3C with participation
from a large number of researchers and industrial partners. It is based on the
Resource Description Framework (
<a href="/RDF/">RDF</a>). See also the separate
<a href="SW-FAQ">FAQ</a> for further information.</p>
</div>
</div>
<div id="w3c_content_body">
<p class="banner">
<img src="/Icons/SW/sw-horz-w3c.png" width="241" height="48" alt="W3C SW Logo" />
</p>
<div class="line">
<p>The Semantic Web is a web of data. There is lots of data we all use every day,
and it is not part of the web. I can see my bank statements on the web, and my
photographs, and I can see my appointments in a calendar. But can I see my photos
in a calendar to see what I was doing when I took them? Can I see bank statement
lines in a calendar?</p>
<p>Why not? Because we don't have a web of data. Because data is controlled by
applications, and each application keeps it to itself.</p>
<p>The Semantic Web is about two things. It is about common formats for
integration and combination of data drawn from diverse sources, where on the
original Web mainly concentrated on the interchange of documents. It is also
about language for recording how the data relates to real world objects. That
allows a person, or a machine, to start off in one database, and then move
through an unending set of databases which are connected not by wires but by
being about the same thing.</p>
<p>
See also
<a href="http://www.w3.org/2001/sw/anews/" title="Activity News">the activity
news</a> for an account of recent events, publications, etc.
For links to tools, books, further details on the technologies,
you can also refer to the
<a href="http://www.w3.org/2001/sw/wiki">Semantic Web Standards Wiki</a>
(and you are welcome to modify those pages when necessary and appropriate).
You may also want to look at the collection of
<a href="http://www.w3.org/2001/sw/sweo/public/UseCases/">SW Case Studies and Use
Cases</a> to see how organizations are using these technologies today.
Finally, for an exhaustive list of all the specifications published by
the activity, please refer to the separate <a href="Specs.html">list
of publications</a>.</p>
</div>
<div class="line">
<h2 id="publs">Publications / Articles / Interviews</h2>
<p>The following is a partial list of various publications and or interviews by
the W3C Staff that help explain the goals and objectives of the Semantic Web.</p>
<ul>
<li>
<a href="http://semanticweb.com/the-semantic-link-podcast-rss-feed-is-live_b17505">
"Semantic Link Podcast Series"</a>, organized by Paul Miller, featuring
Andraž Tori, Bernadette Hyland, Christine Connors, Eric Franzon, Eric Hoffer,
Ivan Herman, Paul Miller, and Peter Brown.</li>
<li>
<a href="http://www.youtube.com/watch?v=KY5skobffk0 ">"Tim Berners-Lee and
Tim O'Reilly"</a>, Web 2.0 Summit 09 discussion (October 2009).</li>
<li>
<a href="http://blip.tv/file/2707910/">Interview with Tim Berners Lee</a> at a
technology symposium at the Embassy of Finland in Washington, (October
2009).</li>
<li>
<a href="http://thefigtrees.net/lee/sw/sciam/semantic-web-in-action">The
Semantic Web in Action</a>, by Lee Feigenbaum, Ivan Herman, Tonya
Hongsermeier, Eric Neumann, and Susie Stephens, Scientific American, 297(6),
pp. 90-97, (December 2007).</li>
<li>
<a href="http://www.sciam.com/article.cfm?articleID=00048144-10D2-1C70-84A9809EC588EF21&catID=2">
The Semantic Web</a>, Scientific American, May 2001, Tim Berners-Lee, James
Hendler and Ora Lassila.</li>
</ul>
</div>
<div class="line">
<h2 id="pres">Presentations</h2>
<p>Details of
<a rel="rdfs:seeAlso" href="http://www.w3.org/2007/11/Talks/Semantic_Web.html">
recent and upcoming</a> Semantic Web related talks, given by the
<a href="/People/">W3C Staff</a>, the staff of the
<a href="/Consortium/Offices/">W3C Offices</a>, and members of the W3C Working
Groups are available separately. A list of
<em>all</em> Semantic Web related talks since 2004 is
<a href="http://w3.org/brief/MjQ3">also available</a>.</p>
</div>
<div class="line">
<h2>
<a id="groups">Groups</a>
</h2>
<p id="forums">The following groups are part of the Semantic Web Activity.</p>
<h3 id="agroups">Active Groups</h3>
<div id="swcg" about="[act:#cg]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/CG/"
property="dc:title org:name">Semantic Web Coordination Group</a>
</h4>
<p property="dc:description" datatype="">The
<a href="/2001/sw/CG/">Semantic Web Coordination Group</a> is tasked to
provide a forum for managing the interrelationships and interdependencies
among groups focusing on standards and technologies that relate to this goals
of the Semantic Web Activity. This group is designed to coordinate,
facilitate and (where possible) help shape the efforts of other related
groups to avoid duplication of effort and fragmentation of the Semantic Web
by way of incompatible standards and technologies.</p>
</div>
<div id="rdb2rdf" about="[act:#rdb2rdf]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/rdb2rdf/"
property="dc:title org:name">RDB2RDF Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the
<a href="http://www.w3.org/2001/sw/rdb2rdf/">RDB2RDF Working Group</a> is to
standardize a language for mapping relational data and relational database
schemas into RDF and OWL, tentatively called the RDB2RDF Mapping Language,
R2RML.</p>
</div>
<div id="rdfa" about="[act:#rdfa]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2010/02/rdfa/"
property="dc:title org:name">RDF Web Applications Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the
<a href="http://www.w3.org/2010/02/rdfa/">RDF Web Applications Working
Group</a>, formerly known as the W3C RDFa Working Group, is to support the developing
use of RDFa for embedding structured data in Web documents in general. The
Working Group will publish W3C Recommendations to extend and enhance the
currently published RDFa 1.0 documents, including an API. The Working Group
will also support the
<a href="http://www.w3.org/html/wg/">HTML Working Group</a> in its work on
incorporating RDFa in HTML5 and XHTML5.</p>
</div>
<div id="rdf-wg" about="[act:#rdf-wg]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2011/rdf-wg/"
property="dc:title org:name">RDF Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the
<a href="http://www.w3.org/2011/rdf-wg/">RDF Working Group</a>, is to update
the 2004 version of the
<a href="http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/">Resource
Description Framework (RDF)</a> Recommendation. The scope of work is to extend
RDF to include some of the features that the community has identified as both
desirable and important for interoperability based on experience with the
2004 version of the standard, but without having a negative effect on
existing deployment efforts.</p>
</div>
<div id="sparql" about="[act:#sparql]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/DataAccess/"
property="dc:title org:name">SPARQL Working Group</a>
</h4>
<p property="dc:description" datatype="">Formerly known as RDF Data Access
Working Group, it developed the SPARQL Query Language recommendation
<a href="http://www.w3.org/blog/SW/2008/01/15/sparql_is_a_recommendation">
published in January 2008</a>. The group is currently chartered to make small
updates to the SPARQL specification that have been identified as users and
implementers as feasible and useful extensions.</p>
</div>
<div id="prov" about="[act:#prov]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2011/prov/"
property="dc:title org:name">Provenance Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the
<a href="http://www.w3.org/2011/prov/">Provenance Working Group</a> is to
support the widespread publication and use of provenance information of Web
documents, data, and resources. The Working Group will publish W3C
Recommendations that define a language for exchanging provenance information
among applications.</p>
</div>
<div id="swig" about="[act:#swig]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/interest/"
property="dc:title org:name">Semantic Web Interest Group</a>
</h4>
<p property="dc:description" datatype="">The Semantic Web Interest Group is a
forum for W3C Members and non-Members to discuss innovative applications of
the Semantic Web. The Interest Group also initiates discussion on potential
future work items related to enabling technologies that support the Semantic
Web, and the relationship of that work to other activities of W3C and to the
broader social and legal context in which the Web is situated.</p>
</div>
<div id="hcls" about="[act:#hcls]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/hcls/"
property="dc:title org:name">Semantic Web Health Care and Life Sciences
Interest Group</a>
</h4>
<p property="dc:description" datatype="">The Semantic Web Health Care and
Life Sciences Interest Group is designed to improve collaboration, research
and development, and innovation adoption in the health care and life science
industries. Aiding decision-making in clinical research, Semantic Web
technologies will bridge many forms of biological and medical information
across institutions.</p>
</div>
<h3>
<a id="completed">Completed Groups</a>
</h3>
<p>The following groups have completed their deliverables and are no longer
expected to hold regular meetings.</p>
<div id="owl" about="[act:#owl]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2007/OWL/"
property="dc:title org:name">OWL Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the OWL Working
Group, is to produce a W3C Recommendation that refines and extends the 2004
version of
<a href="/TR/owl-guide/">OWL</a>. The proposed extensions are a small set
that: have been identified by users as widely needed, and have been
identified by tool implementers as reasonable and feasible extensions to
current tools.</p>
</div>
<div id="rif" about="[act:#rif]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2005/rules/wg/"
property="dc:title org:name">Rules Interchange Format Working Group</a>
</h4>
<p property="dc:description" datatype="">This Working Group is chartered to
produce a core rule language plus extensions which together allow rules to be
translated between rule languages and thus transferred between rule systems.
The Working Group will have to balance the needs of a community diverse
including Business Rules and Semantic users Web specifying extensions for
which it can articulate a consensus design and which are sufficiently
motivated by use cases.</p>
</div>
<h3>
<a id="pastGroups">Past Groups</a>
</h3>
<div id="rdf" about="[act:#rdf]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/RDFCore/"
property="dc:title org:name">RDF Core Working Group</a>
</h4>
<p property="dc:description" datatype="">The RDF Core Working Group was
<a href="/2001/sw/RDFCoreWGCharter">chartered</a> to consider update to the
RDF Model and Syntax Recommendation, and to a few revisions to the RDF Schema
specification.</p>
</div>
<div id="webont" about="[act:#webont]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/WebOnt/"
property="dc:title org:name">Web Ontology Working Group</a>
</h4>
<p property="dc:description" datatype="">The Web Ontology Working Group was
<a href="/2001/sw/WebOnt/charter">chartered</a> to build upon the RDF Core
work a language for defining structured web based ontologies which will
provide richer integration and interoperability of data among descriptive
communities.</p>
</div>
<div id="swd" about="[act:#swd]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2006/07/SWD/"
property="dc:title org:name">Semantic Web Deployment Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of this Working Group is
to provide guidance in the form of W3C Technical Reports on issues of
practical RDF development and deployment practices in the areas of publishing
vocabularies, OWL usage, and integrating RDF with HTML documents.</p>
<p>This group is also responsible for the development of the
<a href="http://www.w3.org/TR/rdfa-syntax">RDFa</a> and
<a href="http://www.w3.org/TR/skos-reference">SKOS</a> specifications.</p>
</div>
<div id="swbpd" about="[act:#swbpd]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/BestPractices/"
property="dc:title org:name">Semantic Web Best Practices and Deployment
Working Group</a>
</h4>
<p property="dc:description" datatype="">The focus of the
<a href="/2001/sw/BestPractices/">Semantic Web Best Practices and Deployment
Working Group</a> was to provide hands-on support for developers of Semantic
Web applications.</p>
</div>
<div id="sweo" about="[act:#sweo]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/sweo/"
property="dc:title org:name">Semantic Web Education and Outreach Interest
Group</a>
</h4>
<p property="dc:description" datatype="">The Semantic Web Education and
Outreach Interest Group (SWEO) was chartered to collect proof-of-concept
business cases, demonstration prototypes, etc, based on successful
implementations of Semantic Web technologies, collect user experiences,
develop and facilitate community outreach strategies, training and
educational resources.</p>
</div>
<div id="powder" about="[act:#powder]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2007/powder/"
property="dc:title org:name">POWDER Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of the Protocol for Web
Description Resources (POWDER) Working Group is to develop a mechanism
through which structured metadata ("Description Resources") can be
authenticated and applied to groups of Web resources. This mechanism will
allow retrieval of the description resources without retrieval of the
resources they describe.</p>
</div>
<div id="grddl" about="[act:#grddl]" typeof="foaf:Agent dc:Agent">
<h4>
<a rel="foaf:homepage" href="http://www.w3.org/2001/sw/grddl-wg/"
property="dc:title org:name">GRDDL Working Group</a>
</h4>
<p property="dc:description" datatype="">The mission of this Working Group
was to complement the concrete RDF/XML syntax with a mechanism to relate
other XML syntaxes (especially XHTML dialects or "microformats") to the RDF
abstract syntax via transformations identified by URIs.</p>
</div>
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<address class="contact">
<span rel="rdfs:seeAlso">
<span typeof="foaf:Group">W3C staff assigned to the
<span property="foaf:name">W3C Semantic Web Activity</span>are
<span rel="foaf:member">
<span typeof="foaf:Person" property="foaf:name" content="Sandro Hawke">
<a rel="rdfs:seeAlso" href="http://www.w3.org/People/Sandro/">Sandro
Hawke</a> (see also
<span rel="rdfs:seeAlso sioc:administrator_of">
<a href="http://decentralyze.com/" typeof="sioc:WebLog sioc:Space">
private blog</a>
</span>)</span>,
<span about="http://www.ivan-herman.net/foaf#me" typeof="foaf:Person"
property="foaf:name" content="Ivan Herman">
<a rel="rdfs:seeAlso" href="http://www.w3.org/People/Ivan">Ivan
Herman</a> (see also
<span rel="rdfs:seeAlso sioc:administrator_of">
<a href="http://www.ivan-herman.name" typeof="sioc:WebLog sioc:Space">
private blog</a>
</span>)</span>, and
<span about="[_:eric]" typeof="foaf:Person" property="foaf:name"
content="Eric Prud'hommeaux">
<a rel="rdfs:seeAlso" href="http://www.w3.org/People/all#eric">Eric
Prud'hommeaux</a>
</span></span></span>
</span>
<br />
<span rel="org:lead" resource="http://www.ivan-herman.net/foaf#me">
<a href="/People/Ivan">Ivan Herman</a>, Semantic Web Activity Lead,
<span property="foaf:mbox" content="mailto:ivan@w3.org">
<ivan@w3.org></span></span>
<br />
<span property="dc:date">2011-11-07</span>
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