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

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Fri, 1 Mar 2013 17:59:02 +0100
Message-ID: <5130DE56.8050007@few.vu.nl>
To: Ivan Herman <ivan@w3.org>
CC: Dan Brickley <danbri@danbri.org>, Manu Sporny <msporny@digitalbazaar.com>, Gregg Kellogg <gregg@greggkellogg.net>, Thomas Baker <tom@tombaker.org>, "W3C RDFa WG" <public-rdfa-wg@w3.org>
Thanks for the catch and the follow up!

In fact I thought this was already part of the document. It's several weeks since I see the W3C pyRDFa parser spitting out RDF from my RDFa and minting the dc11 namespace abbreviation in the process. But maybe I'm interpreting signs in a too optimistic way :-)

Antoine



> Good point. We made the commitment not to change the context file often, so I did not make a change yet. Manu, should we introduce this change now and make it official? Are there other additions that we may want to consider?
>
> If we change this, we will have to make some tam-tam around it; implementers should be notified.
>
> (Eg, two W3C Recs are coming up, namely prov and sparql, both have some vocabulary additions; those may be added right away, ie, as soon as PR is up)
>
> Ivan
>
>
> On Mar 1, 2013, at 17:11 , Dan Brickley<danbri@danbri.org>  wrote:
>
>> +cc Antoine
>>
>> Where are we with this? Do you still plan to add dc11 expansion into
>> http://www.w3.org/2011/rdfa-context/rdfa-1.1 ?
>>
>> Dan
>>
>> On 20 November 2012 21:37, Ivan Herman<ivan@w3.org>  wrote:
>>> 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
>>> Home: http://www.w3.org/People/Ivan/
>>> mobile: +31-641044153
>>> FOAF: http://www.ivan-herman.net/foaf.rdf
>>>
>>>
>>>
>>>
>>>
>>>
>
>
> ----
> Ivan Herman, W3C Semantic Web Activity Lead
> Home: http://www.w3.org/People/Ivan/
> mobile: +31-641044153
> FOAF: http://www.ivan-herman.net/foaf.rdf
>
>
>
>
>
>
Received on Friday, 1 March 2013 16:59:31 UTC

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