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Re: [http-range14] how to publish RDF for Information Resources

From: Andrea Perego <andrea.perego@jrc.ec.europa.eu>
Date: Mon, 20 Feb 2012 01:12:39 +0100
Message-id: <CAHzfgWBMibXUtu-cWF5xY8uRQJ7PrHYBdRwAqV5Wa=gC6N0=ag@mail.gmail.com>
To: Richard Cyganiak <richard@cyganiak.de>
Cc: Kjetil Kjernsmo <kjetil@kjernsmo.net>, public-lod@w3.org
On Sat, Feb 18, 2012 at 4:59 PM, Richard Cyganiak <richard@cyganiak.de> wrote:
> On 17 Feb 2012, at 23:14, Kjetil Kjernsmo wrote:
>>> In general, the RDFa embedded
>>> metadata approach can be replaced by using the <link> element href in XHTML
>>> to pointing to an external RDF document, where the rel=”meta” attribute can
>>> be used to indicate a relationship between resources.
>>
>> Yes, but rel="meta" is not standardized as far as I know, see
>> http://www.w3.org/TR/html4/types.html#type-links
>
> rel="meta" is standardized:
> http://www.w3.org/TR/rdf-syntax-grammar/#section-rdf-in-HTML
> http://www.w3.org/TR/cooluris/#linking
>
> Best,
> Richard

An alternative would be using wdrs:describedby [1], a property defined
in the POWDER-S ontology. The only issue is that the corresponding W3C
Recommendation [2] specifies on this property a domain restriction
which still needs to be amended, as discussed in [3,4].

Anyway, the corresponding "describedby" relationship type can be
safely used in HTML LINK elements, since it is registered by IANA (see
the corresponding entry at [5]).

Said that, the "meta" relationship type (although, as far as I know,
is not registered by IANA) is widely used and it is, currently, the
recommended one, as stated in the W3C TRs pointed out by Richard.

Andrea

----
[1]http://www.w3.org/2007/05/powder-s#describedby
[2]http://www.w3.org/TR/powder-dr/#semlink
[3]http://lists.w3.org/Archives/Public/public-powderwg/2010Nov/0005.html
[4]http://www.w3.org/2007/powder/powder-errata#describedby
[5]http://www.iana.org/assignments/link-relations/link-relations.xml

-- 
Andrea Perego, Ph.D.
European Commission DG JRC
Institute for Environment & Sustainability
Unit H06 - Digital Earth & Reference Data
Via E. Fermi, 2749 - TP 262
21027 Ispra VA,  Italy

DE+RD Unit: http://sdi.jrc.ec.europa.eu

----
The views expressed are purely those of the writer and may
not in any circumstances be regarded as stating an official
position of the European Commission.
Received on Monday, 20 February 2012 00:13:16 UTC

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