Re: wdrs:describedby = @rel describedby. Erratum published

I am in favour of that.

Ivan

On Nov 9, 2010, at 19:43 , Shane McCarron wrote:

> Note that there are a number of ARIA terms in there too.  One of which is describedBy (I think). But I personally don't think this is controversial.  From a follow your nose perspective, I imagine a number of our 'terms' should be linked to things outside of our namespace.
> 
> On 11/9/2010 12:40 PM, Toby Inkster wrote:
>> How controversial would it be to add describedby as a term to the XHTML
>> profile for RDFa 1.1?
>> 
>> I'm suggesting:
>> 
>> 	[ a rdfa:TermMapping ]
>> 	  rdfa:term "describedby" ;
>> 	  rdfa:uri "http://www.w3.org/2007/05/powder-s#describedby" .
>> 
>> I say "controversial" because if it were added to the XHTML profile it
>> would be the only term to expand to a URI outside the XHTML vocabulary
>> namespace.
>> 
>> But it seems useful to have, as this relation is used quite a bit in
>> the XRD/LRDD/WebFinger world.
>> 
>> -Toby
>> 
>> ----
>> Begin forwarded message:
>> 
>> Date: Mon, 08 Nov 2010 13:04:57 +0000
>> From: Phil Archer<phila@w3.org>
>> To: Public POWDER<public-powderwg@w3.org>,  "public-lod@w3.org"
>> <public-lod@w3.org>, Semantic Web<semantic-web@w3.org>  Subject:
>> wdrs:describedby = @rel describedby. Erratum published
>> 
>> 
>> As noted on the LOD and POWDER mailing lists in recent days, the
>> revived 303/200 with content-location header debate brought to my
>> attention the mismatch in the documentation of wdrs:describedby.
>> 
>> Two headlines
>> =============
>> 
>> 1. On behalf of the former POWDER WG, I apologise for the confusion and
>> for the fact that we hadn't realised the mistake earlier.
>> 
>> 2. It has now been fixed as far as it can be for now, with the
>> expectation of a complete fix in the new year.
>> 
>> Brief detail
>> ============
>> 
>> The @rel type of 'describedby' is introduced at [1] and formally
>> defined at [2] thus:
>> 
>> "The relationship A 'describedby' B asserts that resource B provides a
>> description of resource A. There are no constraints on the format or
>> representation of either A or B, neither are there any further
>> constraints on either resource."
>> 
>> The namespace document for wdrs [3] has now been edited to make it
>> clear that wdrs:describedby is semantically identical to this. The
>> previous, erroneous, range restriction has been removed.
>> 
>> Much as I wish I could, I can't just edit the actual POWDER
>> Recommendation - that requires the following of a change process.
>> However, I have published an erratum [4] that makes it clear what edits
>> are expected to be made once the process has been followed (as well as
>> a link to details of the process itself, currently in draft form). The
>> erratum gives full details of the issue and points to the mailing list
>> through which comments can be made.
>> 
>> It's worth noting in this context that the @rel value describedby is
>> included Mark Nottingham's Web linking document, that has now, at last,
>> become an RFC [5].
>> 
>> So, with confidence, we can say that all of the following are
>> legitimate and semantically identical:
>> 
>> (X)HTML, ATOM
>> <link rel="describedby" href="/doc" type="foo/bar" />
>> 
>> HTTP
>> Link:</doc>; rel="describedby" type="foo/bar";
>> 
>> RDF
>> @prefix wdrs:<http://www.w3.org/2007/05/powder-s#>  .
>> <>  wdrs:describedby</doc>  .
>> 
>> Phil.
>> 
>> 
>> [1] http://www.w3.org/TR/powder-dr/#assoc-linking
>> [2] http://www.w3.org/TR/powder-dr/#appD
>> [3] http://www.w3.org/2007/05/powder-s.html#describedby
>> [4] http://www.w3.org/2007/powder/powder-errata#describedby
>> [5] http://tools.ietf.org/html/rfc5988
>> 
>> 
> 
> -- 
> Shane P. McCarron                          Phone: +1 763 786-8160 x120
> Managing Director                            Fax: +1 763 786-8180
> ApTest Minnesota                            Inet: shane@aptest.com
> 
> 
> 


----
Ivan Herman, W3C Semantic Web Activity Lead
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