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Re: 'easier in rdfa' writeup on description multiple classes/properties

From: Ivan Herman <ivan@w3.org>
Date: Tue, 2 Nov 2010 13:59:59 +0100
Cc: public-rdfa <public-rdfa@w3.org>
Message-Id: <93E6820C-09DD-4E89-8221-5A900C3A89B0@w3.org>
To: Dan Brickley <danbri@danbri.org>
Hi Dan,

Everything you say remains valid in RDFa1.1 (of course!). The additional possibilities of RDFa 1.1 are, in fact, marginal compared to the message you want to convey. It is possible to express the namespace declaration in a different way:

<div xmlns:foaf="http://xmlns.com/foaf/0.1/"

could be

<div prefix="foaf: http://xmlns.com/foaf/0.1/ vocab2: http://example.com/vocab2#"

but this is really because many people get nervous by the xmlns:XXX syntax. It would also be possible to have a separate file, say, in turtle, defining the prefixes:

In danbri.ttl

[ rdfa:prefix "foaf" ;
         rdfa:uri "http://xmlns.com/foaf/0.1/"].
[ rdfa:prefix "vocab2" ;
         rdfa:uri "http://example.com/vocab2#"].

and have

<div profile="URI-to-danbri.ttl" ..

YOu could even do a 

[ rdfa:term "Person" ;
         rdfa:uri "http://xmlns.com/foaf/0.1/Person"].
[ rdfa:term "BiblioPerson" ;
         rdfa:uri "http://example.com/vocab2#BiblioPerson"].

and have

<div profile="URI-to-danbri.ttl" about="#fred" typeof="Person BiblioPerson">...

which may make it easier in some settings.

However, none of these _really_ add to your core message, namely that typing in RDFa is simpler...


On Nov 2, 2010, at 13:25 , Dan Brickley wrote:

> Hi folks
> I've just written up some notes on RDF (1.0) and how it improves on
> RDF/XML when you want to say a thing is in several classes, or that
> two things are linked by several properties.
> http://danbri.org/words/2010/11/02/572
> I didn't say anything about RDFa 1.1 as I'm pretty ignorant of the
> current design. I'd be happy if anyone can flesh out how these things
> look in 1.1...
> cheers,
> Dan

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf

Received on Tuesday, 2 November 2010 12:59:03 UTC

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