GRDDL Working Group Charter

Per section 6 Working Groups, Interest Groups, and Coordination Groups of the W3C Process, this charter, and any changes to it, take effect by way of an announcement to the W3C Membership via w3c-ac-members; e.g. call for review of 17 May 2006 with activity proposal.

This is $Revision: 1.7 $ of $Date: 2006/08/11 09:05:22 $; see changes since 17 May below.

The mission of this Working Group is 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.

contents: Scope and Deliverables / Schedule and Milestones / Relationship with Groups / Participation, Meetings, and Logistics

Scope and Deliverables

The Gleaning Resource Descriptions from Dialects of Languages (GRDDL) specification aims to supplement the RDF/XML concrete syntax with a flexible mechanism for using other XML syntaxes with the Resource Description Framework. It binds XML documents, especially XHTML documents, XHTML profiles and XML namespace documents, to transformations (typically in XSLT) that relate their syntax to RDF/XML. A body of supporting software is developing, as well as a community of users. The draft notes a small collection of tests and a small number of outstanding issues; this working group should deliver:


This schedule represents an initial plan. As more information becomes available, milestones may be renegotiated with the Semantic Web Coordination Group. Schedule changes that impact resource allocations are charter changes that require Advisory Committee review.

Since there are already several GRDDL implementations, we expect to demonstrate implementation experience concurrent with resolving issues, so this schedule does not anticipate a separate Candidate Recommendation milestone. Should any need for an explicit Call for Implementations arise, the schedule will be adjusted accordingly.

Relationship with Other Groups

Coordination with other groups will be managed through the Semantic Web Coordination Group.

Within W3C

External groups:

Participation, Meetings, and Logistics

Group membership follows section 6.2.1 Working Group and Interest Group Participation Requirements and is not further constrained.

Participation is expected to consume approximately one half day per week of each Working Group participant's time, including weekly remote meetings. No travel is required for participation in this working group.

The proceedings of the working group are available to the public using a mailing list,, and web pages.


To be successful, we expect the Working Group to have approximately 10 to 15 participating Member organizations and invited experts for its duration. We also expect a large public review group that will participate in the mailing list discussions.

W3C Team Involvement

The W3C Team expects to dedicate the services of one engineer at 25% for the duration of the Working Group.

Patent Policy

This Working Group operates under the W3C Patent Policy (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.

Dan Connolly, team contact, May 2006
$Revision: 1.7 $ of $Date: 2006/08/11 09:05:22 $


Since the 17 May call for review:

$Log: grddl-charter.html,v $
Revision 1.7  2006/08/11 09:05:22  ivan
Changed a dangling link to the activity proposal.

Revision 1.6  2006/08/11 09:02:57  ivan
(ivan) Changed through Jigsaw.

Revision 1.5  2006/07/19 12:05:53  slesch
made valid

Revision 1.4  2006/07/19 11:22:45  ivan
Fixed an HTML validity problem (extra </a>)

Revision 1.3  2006/07/14 17:01:46  slesch
fixed a link

Revision 1.2  2006/07/12 16:49:27  connolly
removed member-confidential style in preparation for call for participation

Revision 1.1  2006/07/11 14:59:11  ivan
*** empty log message ***

Revision 1.26  2006/06/26 14:00:26  connolly
adjusted schedule from start in June to start in July

Revision 1.25  2006/06/23 15:34:05  connolly
clearer connection to RDFa work and WS deployment WG

Revision 1.24  2006/06/23 15:17:41  connolly
DI WG connection

Revision 1.23  2006/06/21 14:11:49  connolly
downcased tutorial for consistency

Revision 1.22  2006/06/21 14:11:15  connolly
- added "and use cases" to "tutorial matierals" deliverable
- promoted the word "Deliverables" to the section heading
- typo: s/an rdf:RDF/any rdf:RDF/
- cleaned up metadata profile link
- moved XML Schema bullet above HTML profile bullet for readability

Revision 1.21  2006/06/21 14:03:16  connolly
- added member-confidential style
- styled status section
- moved status section below h1

Revision 1.20  2006/06/21 14:00:30  connolly
- restored status section; noted w3c-ac-members as the way changes take effect
- separated Scope from Schedule in TOC
- signed the charter
- added change log since 17 May