Architecture Working Group Wiki

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Workplan

• Develop a short document for RDF implementors, clarifying the resource vs. literal string value issue and providing advice on best practice.

• Consider possible RDF encoding changes (in light of above issue), carry out an impact analysis and make recommendations.

• Finalise the provision of a persistent URI for the latest version of our XML schemes.

• Develop an XML binding for Dublin Core metadata which supports all (or a substantial subset) of the features of the DCMI Abstract Model. Revise DCMI XML schemas accordingly.

• Finalise revisions to the Namespace Policy for the Dublin Core Metadata Initiative (DCMI) to align use of terminology with other DCMI recommendations.

• Evaluate use of GRDDL as mechanism for transforming arbitrary DC/XML documents into RDF (DCMI Abstract Model).

• Monitor W3C developments for encoding RDF in XHTML and revise current DC/XHTML guidelines as necessary.

• Develop abstract model of 'DC application profiles'.

• Consider developing a representation of the DCMI Box, Period and Point encoding schemes using the DCMI Abstract Model.

Progress

The first two work items above are being undertaken by the DCRDFTaskforce. See the taskforce's wiki for an up to date snapshot of the status of the associated documents.

Pete Johnston has been working on the two work items associated with the XML encoding guidelines. A summary of the current situation w.r.t. URIs for DCMI's XML schemas is available here with agreement being to move forward on the basis of proposal 1(b).

A revised DRAFT DCMI NamespacePolicy has been drafted.

Work on the final four work items (GRDDL, RDF in XHTML, DC application profile model, and Box/Period/Point) has not yet started.

Documents and resources under construction

The working group (or taskforce) is currently working on the following documents:

• DRAFT UPDATE to the Namespace Policy for the Dublin Core Metadata Initiative (DCMI)

• Clarification of the recommendations for encoding 'value strings' in DC RDF/XML

• Guidelines for encoding DC metadata using the RDF Model

• DC Property Domains and Ranges

• Proposed changes to DCMI property definitions

• DCMI Term Decision Tree

The group is also maintaining a list of issues and possible changes to the DCMI Abstract Model:

• Issues with (and suggested changes to) the DCMI Abstract Model

Published/stable documents and resources

• DCMI Abstract Model

• Expressing Simple Dublin Core in RDF/XML

• Guidelines for implementing Dublin Core in XML

• Expressing Qualified Dublin Core in RDF / XML

• Expressing Dublin Core in HTML/XHTML meta and link elements

• Namespace Policy for the Dublin Core Metadata Initiative (DCMI)

• DCMI Metadata Terms

• Dublin Core Metadata Element Set, Version 1.1: Reference Description

• DCMI term declarations represented in RDF schema language

• XML schemas to support the Guidelines for implementing DC in XML recommendation

• DCMI Architecture Working Group home page

• DC-ARCHITECTURE mailing list archives

Taskforces

• The DC RDF Taskforce is addressing the first two bullet points above.

Meetings

DC-2005, Madrid

DC Architecture session presentations:

• Andy Powell - Introduction, namespace policy, XML guidelines, workplan for next year: Powerpoint

• Pete Johnston - XML and the DCMI Abstract Model: Paper (HTML) Presentation (Powerpoint) Presentation (HTML)

DC-2004, Shanghai

DC Architecture session presentations:

• Andy Powell - Introduction, Abstract Model, RDF Issues, report: Powerpoint HTML

• Pete Johnston - XML Schema: Powerpoint HTML

• Tom Baker - Identifiers for Historical Versions of Metadata Terms: Powerpoint

Meeting report.

Example descriptions

• Example description based on the proposed Adaptability Application Profile

Other related work

• Linking DC Descriptions to ODRL Expressions

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• RecentChanges: see where people are currently working

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• SyntaxReference

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