W3C home > Mailing lists > Public > public-rdf-in-xhtml-tf@w3.org > October 2005

NewsML2 and XHTML2+RDF/A

From: Misha Wolf <Misha.Wolf@reuters.com>
Date: Mon, 31 Oct 2005 16:13:35 +0000
Message-ID: <T7453e0255a0a01f019e1c@lonsmime01.rit.reuters.com>
To: Ben Adida <ben@mit.edu>
Cc: public-rdf-in-xhtml-tf@w3.org, iptc-metadata@yahoogroups.com

[belatedly, changing the subject line]

Hi Ben,

> Does this mean you're expecting to extract triples using GRDDL 
> only, or are you also trying to use RDF/A so that a standard 
> XHTML2+RDF/A parser would be able to extract the metadata 
> accordingly?

There are three parts to my answer:

1.  The codes.

    As RDF/A stands today, I don't believe that a standard 
    XHTML2+RDF/A parser would be able to extract the triples.
    If you folks were interested, we could discuss some way of 
    decoupling the XHTML2+RDF/A model from the XHTML2+RDF/A 
    syntax, so that our syntax could become a particular 
    syntactic expression of the XHTML2+RDF/A model.  I would 
    be very interested in such a possibility.  An HTML 
    comparison that comes to mind is with <centre> vs <div 
    align="center">, the former being a syntactic expression 
    of the latter.

2.  The textual metadata (what we call 'labels').

    Our current proposal is that these consist of XHTML 2, so 
    all XHTML2+RDF/A rules and tools would apply.

3.  The payload.  

    As NewsML is payload-agnostic, this is more difficult to 
    answer.  OTOH, most News is text, and textual News (within 
    the News industry) carries markup.  There are two main 
    camps within the News industry when it comes to text markup:
    (a) those who favour the IPTC's own NITF markup language, 
    and (b) those who favour XHTML.  Reuters is in the second 
    group.  During a discussion at our meeting in Milan last 
    week, it was clear that these two different approaches are 
    not going to go away anytime soon.  So the bottom line is 
    that where the News provider chooses to use XHTML 2 for 
    textual content, all XHTML2+RDF/A rules and tools will 
    apply to the payload.  Where the News provider chooses to 
    use NITF, they won't.


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Received on Monday, 31 October 2005 16:13:10 UTC

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