W3C home > Mailing lists > Public > public-gld-wg@w3.org > March 2013

Re: DCAT Last Call issues: range of dct:language

From: Richard Cyganiak <richard@cyganiak.de>
Date: Tue, 26 Mar 2013 08:45:01 +0000
Message-Id: <044340E2-9879-49E2-9C69-DA06BDD53036@cyganiak.de>
Cc: John Erickson <olyerickson@gmail.com>, Makx Dekkers <makx@makxdekkers.com>, Public GLD WG <public-gld-wg@w3.org>
To: Stasinos Konstantopoulos <konstant@iit.demokritos.gr>
On 26 Mar 2013, at 00:29, "Stasinos Konstantopoulos" <konstant@iit.demokritos.gr> wrote:
> On the other hand, Richard's assertion that:
> 
>>> the LoC URIs whose use we recommend are not typed as
>>> dct:LinguisticSystem.
> 
> is not accurate; LoC URIs (639-1 as well as 639-2 ones) are typed as
> madsrdf:Language, which is equivalent to dct:LinguisticSystem:
> 
> http://www.loc.gov/standards/mads/rdf/v1.html#Language

That's interesting. I didn't know that. This slightly reduces my aversion against stating the range as dct:LinguisticSystem.

Thanks Stasinos!

Richard




> 
> Best,
> Stasinos
> 
> 
> 
> 
> 
> John Erickson wrote:
>> Again I support Richard's argument; I think that changing the
>> suggested range of dct:language to dct:LinguisticSystem would only
>> confuse the majority of potential adopters at this stage.
>> 
>> Furthermore, at this stage of he game I think any stakeholder
>> community that is creating apps which care whether the range of
>> dct:language is dct:LinguisticSystem is (arguably) sophisticated
>> enough to deal with any ambiguities that may arise if it isn't so
>> tightly constrained...
>> 
>> On Mon, Mar 25, 2013 at 7:01 PM, Richard Cyganiak <richard@cyganiak.de>
>> wrote:
>>> On 25 Mar 2013, at 16:03, "Makx Dekkers" <makx@makxdekkers.com> wrote:
>>>> Property dct:language
>>>> (http://www.w3.org/TR/2013/WD-vocab-dcat-20130312/#Property:catalog_language,
>>>> 
>>>> http://www.w3.org/TR/2013/WD-vocab-dcat-20130312/#Property:dataset_language)
>>>> is defined with range rdfs:Resource, while
>>>> athttp://dublincore.org/documents/dcmi-terms/#terms-language, the range
>>>> is defined as dct:LinguisticSystem. Shouldn�t DCAT inherit the
>>>> (narrower) range as defined by DCMI?
>>> 
>>> If we specify the range that way, Then people will get scared because
>>> the LoC URIs whose use we recommend are not typed as
>>> dct:LinguisticSystem. Lots of RDF users don't understand that classes
>>> may be overlapping, and that rdfs:range is descriptive rather than
>>> prescriptive.
>>> 
>>> Given that rdfs:Resource is pretty much the set of everything, the
>>> statement that dct:language has range rdfs:Resource is trivially
>>> correct.
>>> 
>>> IMHO it would be better to drop the rdfs:Resource range, and leave only
>>> the LoC recommendation in the range box, than saying that the range is
>>> dct:LinguisticSystem.
>>> 
>>> Best,
>>> Richard
>>> 
>>> 
>>> 
>>>> 
>>>> Makx.
>>>> 
>>>> 
>>>> Makx Dekkers
>>>> makx@makxdekkers.com
>>>> +34 639 26 11 46
>> 
>> 
>> 
>> --
>> John S. Erickson, Ph.D.
>> Director, Web Science Operations
>> Tetherless World Constellation (RPI)
>> <http://tw.rpi.edu> <olyerickson@gmail.com>
>> Twitter & Skype: olyerickson
> 
> 
Received on Tuesday, 26 March 2013 08:45:23 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 20:32:38 UTC