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Re: RDF-ISSUE-24 (Deprecate Containers): Should we deprecate RDF containers (Alt, Bag, Seq)? [Cleanup tasks]

From: Steve Harris <steve.harris@garlik.com>
Date: Fri, 8 Apr 2011 10:01:53 +0100
Cc: RDF Working Group WG <public-rdf-wg@w3.org>
Message-Id: <3DFB9AC0-5ADB-4BC0-8D09-28F07E6A5477@garlik.com>
To: Ivan Herman <ivan@w3.org>
XMP is underexploited on the web, but not by desktop apps.

I search over hundreds of thousands of XMP records on my laptop and fileserver almost every day (in Adobe Lightroom).

Lightroom's XMP search facility is good enough that I haven't so far been tempted to import the XMP files into a triplestore.

- Steve
 
On 2011-04-08, at 08:18, Ivan Herman wrote:

> Just a point of data: because they are used (although it is quite ugly) in Adobe's XMP, there is a huge set of data out there which is in RDF, currently underexploited, but is based on containers. Essentially, any JPEG image that is generated from Photoshop has RDF data associated with it using Seq and Alt...
> 
> We have to be careful _how_ we would deprecate them if we choose to do so.
> 
> I.
> 
> On Apr 8, 2011, at 24:04 , RDF Working Group Issue Tracker wrote:
> 
>> 
>> RDF-ISSUE-24 (Deprecate Containers): Should we deprecate RDF containers (Alt, Bag, Seq)? [Cleanup tasks]
>> 
>> http://www.w3.org/2011/rdf-wg/track/issues/24
>> 
>> Raised by: Sandro Hawke
>> On product: Cleanup tasks
>> 
>> The RDF 1999 and 2004 Recommendations include vocabulary and syntax
>> (in RDF/XML) for RDF "containers", Alt, Bag, and Seq.  
>> 
>> Although these features are being used, such as in rss 0.91, some experts
>> advise data providers to avoid them.  They have no syntactic support
>> in RDFa or Turtle.  Should the WG align with this advice and say these
>> features are only to be used for backward compatibility?  (That is,
>> RDF/XML parsers must continue to support the syntax, and libraries
>> should allow applications to use the features to interoperate with
>> legacy RDF systems.)
>> 
>> Note that RDF "Containers" (rdf:Alt, rdf:Bag, rdf:Seq) are distinct
>> from RDF "Collections" (rdf:List).  This issue is about Containers
>> only.
>> 
>> http://www.w3.org/TR/2004/REC-rdf-primer-20040210/#containers
>> http://www.w3.org/2001/sw/wiki/RDF_Core_Work_Items#Data_Model_Issues
>> 
>> 
>> 
>> 
>> 
> 
> 
> ----
> 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
> 
> 
> 
> 
> 

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Received on Friday, 8 April 2011 09:02:22 GMT

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