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Re: DC in XHTML2

From: Al Gilman <Alfred.S.Gilman@IEEE.org>
Date: Wed, 8 Jun 2005 09:58:48 -0400
Message-Id: <p06110400becca61aa1c9@[10.0.1.2]>
To: Misha Wolf <Misha.Wolf@reuters.com>, dc-general@jiscmail.ac.uk
Cc: www-rdf-interest@w3.org, semantic-web@w3.org, www-html@w3.org, iptc-metadata@yahoogroups.com

At 6:04 PM +0100 6/7/05, Misha Wolf wrote:

>Is anyone else in the DC community looking at the use of DC in
>XHTML2 and thinking along similar lines to us?  We would be
>very happy to work with others on this issue.

It sounds as though you could use @property with the same
sort of intermediate dictionary that we think we can do for
extensions to the repertory of values for @role.

Here (If I have it straight) we will have a role dictionary (separate
URI from the XHTML 2.0 namespace or the current document instance)
which has a named entry which gathers a collection of assertions and
then a qualified name referring to this named entry in the dictionary
will assert those assertions about the element bearing that QName
as a value of @role.

In the process of developing this we will definitely need assistance
from SW [Best Practices?] and would be delighted to compare
notes with "the people who brought you NewsML."

Keep in touch with Lisa or post progress updates or questions
to <wai-xtech@w3.org> for public discussion and <w3c-wai-pf@w3.org>
if W3C member-confidential for any reason.

Al

>As some of you will know, the XHTML2 draft [1] introduces a
>very interesting syntax for RDF, which many would consider to
>be an improvement on the traditional RDF/XML syntax.  No doubt,
>many content authors will be seeking to add DC metadata to
>their XHTML2 content using these new mechanisms.
>
>The News Architecture Working Party of the International Press
>Telecommunications Council (IPTC) is investigating the use of
>XHTML2 for expressing DC and other metadata.  A major problem
>for us is the lack of support in the current XHTML2 draft (as
>in RDF/XML) for the use of QNames to express terms in
>controlled vocabularies (aka values of properties).
>
>At the moment, the XHTML2 @content attribute takes PCDATA and
>the @href attribute takes IRIs.  There is no attribute
>available for QNames.
>
>We want to be able to use, eg, <dc:subject> with a QName as a
>value (ie the object of the RDF statement).  The reasons include
>legibility and compactness.  News items (and news headlines)
>often carry numerous subject codes, hence the need for
>compactness.
>
>Is anyone else in the DC community looking at the use of DC in
>XHTML2 and thinking along similar lines to us?  We would be
>very happy to work with others on this issue.
>
>[1] http://www.w3.org/TR/xhtml2
>
>Misha Wolf
>Standards Manager, Reuters
>Chair, News Metadata Framework WG, IPTC
>Vice-Chair, News Architecture WP, IPTC
>
>
>
>
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Received on Wednesday, 8 June 2005 18:43:42 UTC

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