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.

GRDDL is a mechanism for Gleaning Resource Descriptions from Dialects of Languages. The GRDDL specification introduces markup for declaring that an XML document includes gleanable data and for linking to an algorithm, typically represented in XSLT, for gleaning the resource descriptions from the document.

A GRDDL Use Cases document provides motivating examples. A GRDDL Primer demonstrates the mechanism on XHTML documents which include widely-deployed dialects, more recently known as microformats.

GRDDL W3C Standards and Notes

Also of Interest

These are documents produced outside the GRDDL Working Group that may be of interest to people interested in GRDDL. Please alert the Chair of the Working Group if you know of any material that you think merits inclusion.

Schedule of Deliverables

The working group schedule is an estimate based on the schedule in the charter and subject to negotiation with peer groups via the Semantic Web Coordination Group. See also detailed schedule in preparation for last call.

Group Membership and Joining

We encourage new members of the group to introduce themselves by email; for example, David Booth, Ronald P. Reck, Murray Maloney, Harry Halpin, Chimezie Ogbuji, Fabien Gandon, Ian Davis, and Dan Connolly. The full GRDDL WG participants list is available to W3C members.

If you want to join the group:

Charter, Meeting Records, and History

The GRDDL Working Group Charter shows what the W3C has asked this working group to do. The following events chart our progress:

GRDDL history

These events pre-date the Working Group:

W3C Working Group Resources