rdfa-wg-charter
28.5 KB
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>RDFa Working Group Charter</title>
<link rel="stylesheet" href="http://www.w3.org/2005/10/w3cdoc.css" type="text/css" media="screen" />
<link rel="stylesheet" type="text/css" href="http://www.w3.org/Guide/pubrules-style.css" />
<link rel="stylesheet" type="text/css" href="http://www.w3.org/2006/02/charter-style.css" />
<style type="text/css">
/*<![CDATA[*/
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ul.c1 {font-size: small}
.status { font-style: italic; font-variant: small-caps; font-size: 120% }
.atat {background: yellow}
.new { background: khaki; color: green }
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</style>
<meta content="Manu Sporny, Ben Adida, Ivan Herman" name="author" />
</head>
<body>
<div id="template">
<ul id="navbar" class="c1">
<li><a href="#background">Background</a> </li>
<li><a href="#scope">Scope</a> </li>
<li><a href="#deliverables">Deliverables</a> </li>
<li><a href="#coordination">Dependencies</a> </li>
<li><a href="#participation">Participation</a> </li>
<li><a href="#communication">Communication</a> </li>
<li><a href="#decisions">Decision Policy</a> </li>
<li><a href="#patentpolicy">Patent Policy</a> </li>
<li><a href="#about">About this Charter</a> </li>
</ul>
<p><a href="http://www.w3.org/" shape="rect">
<img alt="W3C" src="http://www.w3.org/Icons/w3c_home" height="48" width="72" /></a>
<a class="domainlogo" href="/TandS/" shape="rect">
<img src="http://www.w3.org/Icons/tands" alt="Technology and Society Domain" /></a>
</p>
<h1 id="title">RDFa Working Group Charter </h1>
<p>The <strong>mission</strong> of the <a href="http://www.w3.org/2010/02/rdfa/">RDFa Working Group</a>
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 (as a followup on the the currently
published <a href="http://www.w3.org/TR/rdfa-in-html/">Working Draft for RDFa 1.0 in HTML5)</a>.
</p>
<p>The main directions of RDFa’s enhancements are:</p>
<ol class="mission">
<li>specification of an API for RDFa, usable for browsers and XML applications</li>
<li>updates to the RDFa language that ease the practice of authoring RDFa</li>
<li>definition of the semantics of RDFa attributes for XML languages in general</li>
</ol>
<p class="mission">The goal is to maintain backward compatibility with RDFa 1.0 (although some
small non-compatible changes with regard to the defaults on XML Literals, may be introduced).
No radical redefinition of the RDFa language is envisaged.
</p>
<div class="noprint">
<p class="join"><a href="http://www.w3.org/2004/01/pp-impl/44350/join">Join the RDFa
Working Group</a>.</p>
</div>
<table class="summary-table">
<tbody>
<tr id="Duration">
<th rowspan="1" colspan="1">End date </th>
<td rowspan="1" colspan="1">31 July 2011 </td>
</tr>
<tr>
<th rowspan="1" colspan="1">Confidentiality </th>
<td rowspan="1" colspan="1">Proceedings are
<a href="/2005/10/Process-20051014/comm.html#confidentiality-levels">public</a>
</td>
</tr>
<tr>
<th rowspan="1" colspan="1">Initial Chairs </th>
<td rowspan="1" colspan="1">Ben Adida (Creative Commons)<br /> Manu Sporny (Digital Bazaar, Inc.)<br />
</td>
</tr>
<tr>
<th rowspan="1" colspan="1">Initial Team Contacts</th>
<td rowspan="1" colspan="1">Ivan Herman (15%) <br />
</td>
</tr>
<tr>
<th rowspan="1" colspan="1">Usual Meeting Schedule </th>
<td rowspan="1" colspan="1">Teleconferences: Weekly <br /> Face-to-face: None planned</td>
</tr>
</tbody>
</table>
<div >
<h2 id="background">Background</h2>
<p class="mission">The <a href="http://rdfa.info/about/">RDF in XHTML
Task Force</a>, jointly managed by the <a href="http://www.w3.org/2006/07/SWD/">Semantic Web Deployment</a>
and the <a href="http://www.w3.org/MarkUp/">XHTML2</a> Working Groups,
published <a href="http://www.w3.org/standards/techs/rdfa#w3c_all">two documents</a> in October 2009
that collectively describe RDFa 1.0. Since the release of these documents, RDFa has enjoyed many
successes, including a number of independent implementations and the public backing of
major search engine companies. Deployment by major public institutions, governmental sites, as well
as private companies, incorporation into CMS systems, etc, have also come to the fore. </p>
<p>Although formally defined as a module of XHTML1.1, there is a demand for the adaptation of RDFa to
newer generations of HTML. Also, the RDFa attribute set has already been adopted by other
XML applications, including the
<a href="http://www.w3.org/TR/2008/REC-SVGTiny12-20081222/">SVG 1.2</a> W3C
Recommendation, the <a href="http://developer.yahoo.com/searchmonkey/smguide/datarss.html">DataRSS</a> format
proposed by Yahoo, and
<a href="http://www.oasis-open.org/committees/document.php?document_id=31264">Version 1.2 of the OpenDocument
(ODF) format</a>. Consequently, there is a need for the consolidation of these developments in the form
of updated Recommendations.</p>
</div>
<div class="scope">
<h2 id="scope">Scope </h2>
<p>The goal of this Working Group is to make RDFa authoring easier, to ensure continued adoption of
the technology in HTML, XHTML, and XML, and to help developers to create applications based on RDFa data.
The main work items to be completed by this Working Group, are:</p>
<ul>
<li>Define an RDFa API</li>
<li>Simplify the RDFa markup where possible. This may include simplification on the usage
of CURIEs, or definition of predefined attributes for the @rel, @rev or @property attributes. The
goal is to make RDFa authoring easier for end users.</li>
<li>Unify and ensure orthogonality of RDFa markup among all languages (HTML, XHTML, and XML in general)</li>
<li>Maintain the RDFa-in-XHTML specification for bugs/errata</li>
<li>Maintain RDFa Test Cases across host languages</li>
<li>Create the necessary environments to maintain and help a growing RDFa community. The goal
is that this environment would stay active after the Working Group’s charter expiration. This involves:
<ul>
<li>creation and maintenance of wiki pages containing reference to implementations, tutorials,
and other documents</li>
<li>“cookbook” type documents on the usage of major vocabularies and ontologies for typical
RDFa applications</li>
<li>examples of scripting applications using the RDFa ECMAScript API and typical
ECMAScript libraries like jQuery, Dojo, etc</li>
</ul>
<p>Some of these documents may be published as Working Group Notes while others will be kept as Wiki pages
(to be kept up-to-date by the community).</p>
</li>
</ul>
<p>The primary target language for the API, as referred to above, is ECMAScript, although other
languages may also be considered. Wherever appropriate the group should use the
<a href="http://www.w3.org/TR/WebIDL/">WebIDL</a> formalism to specify its APIs. Also, the API is strictly
an <em>RDFa API</em>, ie, it does not
include a generic API for RDF data (“TripleStore API”). At the time of writing this charter, such
<em>standard</em> TripleStore API does not exist (although several different libraries are in use).
An RDFa API and a TripleStore API are clearly related. The Working Group will therefore take
existing APIs into account when working on the RDFa API, and may also document its findings on
generic TripleStore APIs in a separate Working Group Note. Such note may become a point
of departure for the standardization of a generic TripleStore API in a different Working Group.
It is, however, <em>not</em> in the charter of this Working Group to define a general TripleStore
API Recommendation.</p>
<p>Because the RDFa API is not based on any previous RDFa work at W3C, use cases for such API usage should
be gathered by the Working Group. Beyond influencing the final shape of the API, those use cases could also be
documented as part of the “RDFa usage cookbook”.</p>
<p>The group will also take into account the
<a href="http://www.w3.org/MarkUp/2008/REC-rdfa-syntax-20081014-errata/">errors on the
documents reported by the community</a> since the publication of of the RDFa
documents in October 2009, also archived in the
<a href="http://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/">rdf-in-xhtml</a>
and <a href="http://lists.w3.org/Archives/Public/public-rdfa/">public-rdfa</a>
mailing lists.
</p>
<p>Backwards compatibility with RDFa 1.0 is of great importance. That means, in general, that
all triples that are produced via the
<a href="http://www.w3.org/TR/rdfa-syntax/">October 2008 version of RDFa</a>, should still be
generated in the new version. For each new feature, if there is doubt or a
perceived problem with respect to this, the guideline should be to not include the feature in the set
of modifications. The only minor feature the Working Group has identified and which may constitute a possible
exception to this rule, is the default XML Literal generation. (See the
<a href="http://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/2009Jul/0159.html">proposal</a> and
the corresponding thread for details.) </p>
<h3>Success Criteria</h3>
<ul>
<li>RDFa 1.1 improvements to authoring RDFa</li>
<li>RDFa API, implementable both by browsers and various ECMAScript libraries</li>
<li>Successful specification and usage of RDFa in other XML languages</li>
<li>Up-to-date testing environment for RDFa 1.1</li>
<li>Minimize and possibly eliminate all divergence between RDFa 1.1 in XHTML1.1, XML dialects and (X)HTML5</li>
</ul>
<h3>Out of Scope</h3>
<p>The working group does <em>not</em> assert any authority over the deliverables
of the <a href="http://www.w3.org/html/wg/">HTML Working Group</a>.
The group will have a strong cooperation with the <a href="http://www.w3.org/html/wg/">HTML Working Group</a>,
ensuring that the RDFa-in-HTML5 work remains compatible with the output of this group. </p>
</div>
<div>
<h2 id="deliverables">Deliverables </h2>
<p>(The titles of the documents are indicative only)</p>
<ul>
<li><strong>RDFa 1.1 API, <em>Recommendation</em></strong>:
This document will define a generic API for accessing RDFa
data contained in the current page.</li>
<li><strong>RDFa 1.1 Core, <em>Recommendation</em></strong>:
This document will specify the common RDFa attribute sets that may be included by other
languages such as XHTML, HTML, or general XML applications like SVG or ODF.</li>
<li><strong>RDFa 1.1 in XHTML1.1, <em>Recommendation</em></strong>:
This document will be based on the RDFa 1.1 Core document and specify RDFa usage in XHTML1.1
documents.</li>
<li><strong>RDFa 1.1 Primer, <em>Note</em></strong>: The RDFa Primer document will
be updated to include RDFa 1.1 modifications.</li>
<li><strong>RDF TripleStore APIs, <em>Note</em></strong>: Finding of the group
on generic TripleStore APIs. Publication of this note is optional.</li>
<li><strong>RDFa Usage Cookbook, <em>Note</em></strong>: Document on the usage of major
vocabularies and ontologies for typical RDFa applications. Publication of this note is optional.</li>
</ul>
<p>Although not formally part of the deliverables of this group, it is also the goal to strongly
cooperate with the <a href="http://www.w3.org/html/wg/">HTML Working Group</a> in publishing an
<strong>RDFa in HTML5</strong> document, in case the decision of the HTML WG is to finalize that
document as a Recommendation.
</p>
<h3 id="milestones">Milestones</h3>
<table class="roadmap" width="80%">
<tfoot>
<tr>
<td colspan="6" rowspan="1">Note: Dates are based on a charter starting in February 2010.
The group will document significant changes from this initial
schedule on the group home page. </td>
</tr>
</tfoot>
<tbody>
<tr>
<th rowspan="1" colspan="1">Specification </th>
<th rowspan="1" colspan="1"><acronym title="First Working Draft">FPWD</acronym></th>
<th rowspan="1" colspan="1"><acronym title="Last Call Working Draft">LC</acronym> </th>
<th rowspan="1" colspan="1"><acronym title="Candidate Recommendation">CR</acronym> </th>
<th rowspan="1" colspan="1"><acronym title="Proposed Recommendation">PR</acronym> </th>
<th rowspan="1" colspan="1"><acronym title="Recommendation">Rec</acronym></th>
</tr>
<tr>
<th rowspan="1" colspan="1">RDFa 1.1 API</th>
<td class="WD1" rowspan="1" colspan="1">April 2010 </td>
<td class="LC" rowspan="1" colspan="1">October 2010 </td>
<td class="CR" rowspan="1" colspan="1">January 2011</td>
<td class="PR" rowspan="1" colspan="1">March 2011</td>
<td class="REC" rowspan="1" colspan="1">April 2011</td>
</tr>
<tr>
<th rowspan="1" colspan="1">RDFa 1.1 Core</th>
<td class="WD1" rowspan="1" colspan="1">April 2010 </td>
<td class="LC" rowspan="1" colspan="1">October 2010 </td>
<td class="CR" rowspan="1" colspan="1">January 2011</td>
<td class="PR" rowspan="1" colspan="1">March 2011</td>
<td class="REC" rowspan="1" colspan="1">April 2011</td>
</tr>
<tr>
<th rowspan="1" colspan="1">RDFa 1.1 in XHTML1.1</th>
<td class="WD1" rowspan="1" colspan="1">April 2010</td>
<td class="LC" rowspan="1" colspan="1">October 2010</td>
<td class="CR" rowspan="1" colspan="1">January 2011</td>
<td class="PR" rowspan="1" colspan="1">March 2011</td>
<td class="REC" rowspan="1" colspan="1">April 2011</td>
</tr>
<tr>
<th rowspan="1" colspan="1">RDFa 1.1 Primer</th>
<td class="WD1" rowspan="1" colspan="1">May 2010</td>
<td class="LC" rowspan="1" colspan="1">March 2011</td>
<td class="CR" rowspan="1" colspan="1">n/a</td>
<td class="PR" rowspan="1" colspan="1">n/a</td>
<td class="REC" rowspan="1" colspan="1">April 2011</td>
</tr>
<tr>
<th rowspan="1" colspan="1">RDF TripleStore APIs (optional)</th>
<td class="WD1" rowspan="1" colspan="1">October 2010 </td>
<td class="LC" rowspan="1" colspan="1">April 2011 </td>
<td class="CR" rowspan="1" colspan="1">n/a</td>
<td class="PR" rowspan="1" colspan="1">n/a</td>
<td class="REC" rowspan="1" colspan="1">June 2011 </td>
</tr>
<tr>
<th rowspan="1" colspan="1">RDFa Usage Cookbook (optional)</th>
<td class="WD1" rowspan="1" colspan="1">October 2010</td>
<td class="LC" rowspan="1" colspan="1">April 2011</td>
<td class="CR" rowspan="1" colspan="1">n/a</td>
<td class="PR" rowspan="1" colspan="1">n/a</td>
<td class="REC" rowspan="1" colspan="1">June 2011 </td>
</tr>
</tbody>
</table>
<h3 id="timeline">Timeline View Summary</h3>
<ul>
<li>T: First teleconference</li>
<li>T+3: First Public Working Draft for the Recommendation track documents</li>
<li>T+4: First Public Working Draft for the Primer</li>
<li>T+9: Last Call Working Draft for the Recommendation track documents</li>
<li>T+9: First Public Working Draft for the TripleStore API and the Cookbook (both are optional)</li>
<li>T+11: Candidate Recommendation for the Recommendation track documents</li>
<li>T+13: Proposed Recommendation for the Recommendation track documents</li>
<li>T+13: Last Call Working Draft for the Primer</li>
<li>T+13: Publication of the API, RDFa 1.1 Core and RDFa 1.1 in XHTML1.1 Recommendations</li>
<li>T+13: Publication of the RDFa Primer</li>
<li>T+13: Last Call Working Draft for the TripleStore API and the Cookbook (both are optional)</li>
<li>T+15: Publication of the TripleStore API and the Cookbook (both are optional)</li>
</ul>
</div>
<div class="dependencies">
<h2 id="coordination">Dependencies and Liaisons</h2>
<h3>Dependencies</h3>
<dl>
<dt><a href="http://www.w3.org/International/">Internationalization Activity</a></dt>
<dd>To ensure that all features introduced to RDFa 1.1 are in line with the requirements of Internationalization
on the Web.</dd>
<dt><a href="http://www.w3.org/WAI/PF/">Protocols and Formats Working Group</a></dt>
<dd>To ensure that all features introduced to RDFa 1.1 are in line with the requirements of Web Accessibility.</dd>
</dl>
<h3>Liaisons</h3>
<h4>W3C Groups</h4>
<dl>
<dt><a href="http://www.w3.org/html/wg/">HTML Working Group</a></dt>
<dd>To provide input for RDFa in HTML5 and XHTML5 specifications, and to use the feedbacks on those
specifications as input to the RDFa 1.1 development.</dd>
<dt><a href="http://www.w3.org/2008/webapps/">Web Applications Working Group</a></dt>
<dd>To ensure that the API work around RDFa stays in line with the general
Web Applications work.</dd>
<dt><a href="http://www.w3.org/2001/tag/">Technical Architecture Group (TAG)</a></dt>
<dd>To ensure that RDFa 1.1 is in line with general Web Architecture Principles</dd>
<dt><a href="http://www.w3.org/2001/sw/CG/">Semantic Web Coordination Group</a></dt>
<dd>To ensure that the development of RDFa and the APIs are coordinated with other
activities around the Semantic Web</dd>
<dt><a href="http://www.w3.org/Graphics/SVG/WG/">SVG Working Group</a></dt>
<dd>To ensure that the development of RDFa 1.1 and the APIs are in line with the development
of SVG</dd>
<dt><a href="http://www.w3.org/Graphics/SVG/IG/">SVG Interest Group</a></dt>
<dd>Provide feedback on the RDFa usage in SVG, as well as test cases that can also be used
by SVG 1.2 implementations. The cookbook examples should be coordinated with the SVG group,
thereby providing useful examples for the SVG community, too</dd>
<dt><a href="http://www.w3.org/WAI/PF/">Protocols and Formats Working Group</a></dt>
<dd>To explore whether and how RDFa 1.1 can contribute to the issues raised by future developments of
<a href="http://www.w3.org/standards/techs/aria">ARIA</a> and the usage of the @role attribute.</dd>
</dl>
<h4>External Groups</h4>
<dl>
<dt><a href="http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=office">OASIS
Open Document Format for Office Applications (OpenDocument) TC</a></dt>
<dd>To synchronize on the RDFa usage in the ODF 1.2</dd>
</dl>
<div id="conformance">
<p>Furthermore, RDFa Working Group expects to follow these W3C Recommendations: </p>
<ul>
<li><a href="/TR/qaframe-spec/">QA Framework: Specification Guidelines</a>.</li>
<li><a href="/TR/charmod/">Character Model for the World Wide Web 1.0: Fundamentals</a> </li>
<li><a href="/TR/webarch/">Architecture of the World Wide Web, Volume I</a> </li>
</ul>
</div>
</div>
<div class="participation">
<h2 id="participation">Participation </h2>
<p>To be successful, the RDFa Working Group is expected to have 5 or
more active participants for its duration. Effective participation in the RDFa
Working Group is expected to consume one work day per week for each
participant; two days per week for editors. The RDFa Working Group will
allocate also the necessary resources for building proof-of-concept
Validators, Test Suites, and other implementations for
each specification. </p>
<p>Participants are reminded of the <a href="/2005/10/Process-20051014/groups.html#good-standing">Good
Standing requirements</a> of the W3C Process. </p>
</div>
<div class="communication">
<h2 id="communication">Communication </h2>
<p>This group primarily conducts its work on the public mailing list
public-rdfa@w3.org (with a publicly visible <a href="http://lists.w3.org/Archives/Public/public-rdfa/">archive</a>) .
</p>
<p>Information about the group (deliverables, participants, teleconferences, etc.) is available
from the <a href="http://www.w3.org/2010/02/rdfa">RDFa Working Group home page</a>. </p>
</div>
<div class="decisions">
<h2 id="decisions">Decision Policy </h2>
<p>As explained in the Process Document (<a href="/Consortium/Process/policies#Consensus" shape="rect">section 3.3</a>),
this group will seek to make decisions when there is consensus. When the Chair
puts a question and observes dissent, after due consideration of different
opinions, the Chair should record a decision (possibly after a formal vote) and any objections, and move on. </p>
<p>This charter is written in accordance with <a href="/Consortium/Process/policies#Votes">Section 3.4,
Votes</a> of the W3C Process Document and includes no voting procedures beyond what the Process Document
requires. </p>
</div>
<div class="patent">
<h2 id="patentpolicy">Patent Policy </h2>
<p>This Working Group operates under the <a href="/Consortium/Patent-Policy-20040205/" shape="rect">W3C Patent
Policy</a> (5 February 2004 Version). To promote the widest adoption of Web standards, W3C
seeks to issue Recommendations that can be implemented, according to
this policy, on a Royalty-Free basis. </p>
<p>For more information about disclosure obligations for this group,
please see the <a href="/2004/01/pp-impl/" shape="rect">W3C Patent Policy
Implementation</a>. </p>
</div>
<h2 id="about">About this Charter </h2>
<p>This charter for the RDFa Working Group has been created according
to <a href="/Consortium/Process/groups#GAGeneral" shape="rect">section 6.2</a> of the
<a href="/Consortium/Process" shape="rect">Process Document</a>. In the
event of a conflict between this document or the provisions of any charter
and the W3C Process, the W3C Process shall take precedence. </p>
<hr />
<address>Ivan Herman and Steven Pemberton, W3C staff, with input from Ben Adida, Manu Sporny, Mark Birbeck,
and Shane McCarron</address>
<p class="copyright"><a rel="Copyright" href="/Consortium/Legal/ipr-notice#Copyright" >Copyright</a>© 2010
<a href="/" shape="rect">W3C</a>® (<a href="http://www.csail.mit.edu/" shape="rect">MIT</a> ,
<a href="http://www.ercim.eu/" shape="rect">ERCIM</a>, <a href="http://www.keio.ac.jp/" shape="rect">Keio</a>),
All RightsReserved.</p>
<p>$Date: 2010/02/02 16:14:19 $</p>
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