Re: Prefix for http://purl.org/dc/elements/1.1/ in RDFa Initial Context?

I am fine with this change.

WG: process question. If we accept this change, when should we do this? We are bound by a promise not to make changes often. I would therefore propose to make this change when html5+rdfa goes to CR. Tom, this would be sometimes January-February time range. Would that be fine?

Ivan




On Nov 20, 2012, at 16:28 , Gregg Kellogg wrote:

> ΩOn Nov 20, 2012, at 4:24 PM, Thomas Baker <tom@tombaker.org> wrote:
> 
>> Dear RDFa WG,
>> 
>> Currently, the prefixes "dc:" and "dcterms:" are both mapped in the RDFa
>> Initial Context to the namespace URI http://purl.org/dc/terms/ (here:
>> "/terms/") [1].  
>> 
>> It has been pointed out that a considerable amount of data uses, or maps to,
>> DCMI properties with the namespace URI http://purl.org/dc/elements/1.1/ (here:
>> "/1.1/"), which in other contexts has traditionally been mapped to the prefix
>> "dc:".  
>> 
>> Most of the /terms/ properties have ranges restricted to either literal or
>> non-literal values, while the /1.1/ properties are rangeless (rdfs:Resource by
>> default) -- a characteristic some users see as an advantage (see [2]).
>> 
>> DCMI would like to propose to the RDFa Working Group that the prefix "dc11:" be
>> added to the Initial Context for the /1.1/ namespace URI.  
> 
> +1
> 
> Gregg
> 
>> People who have used "dc:" for /1.1/ properties will need to explicitly declare
>> this as a prefix.  However, for those who continue to use /1.1/ properties --
>> in some cases, precisely because they are rangeless -- inclusion in the Initial
>> Context would emphasize that /1.1/ has not been forgotten or deprecated,
>> reinforce the message that /1.1/ properties should not be "upgraded" to /terms/
>> properties in a mechanical way, and provide a conventional prefix to use for
>> the properties.
>> 
>> Many thanks for your consideration,
>> Tom
>> 
>> [1] http://www.w3.org/2011/rdfa-context/rdfa-1.1
>> [2] http://wiki.dublincore.org/index.php/FAQ/DC_and_DCTERMS_Namespaces
>> 
>> -- 
>> Tom Baker <tom@tombaker.org>
>> Dublin Core Metadata Initiative Ltd
>> 
>> 
> 


----
Ivan Herman, W3C Semantic Web Activity Lead
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Received on Tuesday, 20 November 2012 21:38:03 UTC