- From: Mark Birbeck <mark.birbeck@x-port.net>
- Date: Tue, 7 Jun 2005 23:16:05 +0100
- To: "'Misha Wolf'" <Misha.Wolf@reuters.com>
- Cc: <www-rdf-interest@w3.org>, <semantic-web@w3.org>, <www-html@w3.org>, <iptc-metadata@yahoogroups.com>, <dc-general@jiscmail.ac.uk>
- Message-ID: <A09C652B-FA32-4FD5-AB4C-FC28BE541912@S009>
Hi Misha, One way to achieve a more abbreviated mark-up, even if it is not the full solution of 'QNames in @href', is to use @xml:base. All @href values will be relative to this, and an RDF/A processor should honour changes of base URI through the mark-up. It will at least make your mark-up more compact. That's not to say that we shouldn't try to find other solutions, too. In one of my early drafts of RDF/A I did actually have an additional attribute called @resource, which was a QName, and which sat alongside @href. See section 4.2 of RDF/XHTML, as it was then called: <http://www.formsplayer.com/notes/xhtml-meta-data-03.html> There was some resistance to it, since some people rightly say that QNames are not URIs. But anyway, I'll take another look at it, since I certainly think that yours is a strong use case for something less that a full URI. Regards, Mark PS Good to see you all at your AGM today, and even better to see that your requirements are being fed into the XHTML2 and RDF/A work! Mark Birbeck CEO x-port.net Ltd. e: Mark.Birbeck@x-port.net t: +44 (0) 20 7689 9232 w: http://www.formsPlayer.com/ b: http://internet-apps.blogspot.com/ Download our XForms processor from http://www.formsPlayer.com/ > -----Original Message----- > From: www-html-request@w3.org > [mailto:www-html-request@w3.org] On Behalf Of Misha Wolf > Sent: 07 June 2005 18:04 > To: dc-general@jiscmail.ac.uk > Cc: www-rdf-interest@w3.org; semantic-web@w3.org; > www-html@w3.org; iptc-metadata@yahoogroups.com > Subject: DC in XHTML2 > > > 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 > > > > > ----------------------------------------------------------------- > Visit our Internet site at http://www.reuters.com > > To find out more about Reuters Products and Services visit > http://www.reuters.com/productinfo > > Any views expressed in this message are those of the > individual sender, except where the sender specifically > states them to be the views of Reuters Ltd. > > >
Received on Tuesday, 7 June 2005 22:17:13 UTC