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

From: Stasinos Konstantopoulos <konstant@iit.demokritos.gr>
Date: Tue, 26 Mar 2013 02:29:39 +0200 (EET)
Message-ID: <d5976612fc1a071064cc2df8467a668d.squirrel@webmail.iit.demokritos.gr>
To: "John Erickson" <olyerickson@gmail.com>
Cc: "Richard Cyganiak" <richard@cyganiak.de>, "Makx Dekkers" <makx@makxdekkers.com>, "Public GLD WG" <public-gld-wg@w3.org>
John, all,

I personally find it more confusing to see dct:language listed with a
range that is different from what I am familiar with and from what I see
if I follow the link to http://purl.org/dc/terms/language

But that might be a matter of personality and background.

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

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 00:30:12 UTC

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