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Re: Schema.org in RDF ...

From: Michael Hausenblas <michael.hausenblas@deri.org>
Date: Wed, 8 Jun 2011 09:56:27 +0100
Cc: Bernard Vatant <bernard.vatant@mondeca.com>, Linked Data community <public-lod@w3.org>
Message-Id: <842D3E26-D520-4FA8-B503-72269898A4D9@deri.org>
To: Patrick Logan <patrickdlogan@gmail.com>

> Would it be reasonable to use  http://schema.rdfs.org rather than
> http://schema.org in the URIs? Essentially mirror what one might hope
> for schema.org to become. Then if it does become that, link the two
> together?

I would not exclude the possibility that Schema.org will, sooner or  
later, serve other representations than HTML from their URIs. In this  
sense, I'd opt for keeping the original URIs.
However, I agree - for now, I'd like to focus on the part that you  
call 'mirror what one might hope for schema.org to become'. Fancy  
contributing, Patrick? ;)

Cheers,
	Michael
--
Dr. Michael Hausenblas, Research Fellow
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html

On 7 Jun 2011, at 17:49, Patrick Logan wrote:

> Would it be reasonable to use  http://schema.rdfs.org rather than
> http://schema.org in the URIs? Essentially mirror what one might hope
> for schema.org to become. Then if it does become that, link the two
> together?
>
>
> On Tue, Jun 7, 2011 at 1:22 AM, Michael Hausenblas
> <michael.hausenblas@deri.org> wrote:
>>> Something I don't understand. If I read well all savvy discussions  
>>> so far,
>>> publishers behind http://schema.org URIs are unlikely to ever  
>>> provide any
>>> RDF description,
>>
>> What makes you so sure about that not one day in the (near?) future  
>> the
>> Schema.org URIs will serve RDF or JSON, FWIW, additionally to  
>> HTML? ;)
>>
>> Cheers,
>>        Michael
>> --
>> Dr. Michael Hausenblas, Research Fellow
>> LiDRC - Linked Data Research Centre
>> DERI - Digital Enterprise Research Institute
>> NUIG - National University of Ireland, Galway
>> Ireland, Europe
>> Tel. +353 91 495730
>> http://linkeddata.deri.ie/
>> http://sw-app.org/about.html
>>
>> On 7 Jun 2011, at 08:44, Bernard Vatant wrote:
>>
>>> Hi all
>>>
>>> Something I don't understand. If I read well all savvy discussions  
>>> so far,
>>> publishers behind http://schema.org URIs are unlikely to ever  
>>> provide any
>>> RDF description, so why are those URIs declared as identifiers of  
>>> RDFS
>>> classes in the http://schema.rdfs.org/all.rdf. For all I can see,
>>> http://schema.org/Person is the URI of an information resource,  
>>> not of a
>>> class.
>>> So I would rather have expected mirroring of the schema.org URIs by
>>> schema.rdfs.org URIs, the later fully dereferencable proper RDFS  
>>> classes
>>> expliciting the semantics of the former, while keeping the  
>>> reference to the
>>> source in some dcterms:source element.
>>>
>>> Example, instead of ...
>>>
>>> <rdf:Description rdf:about="http://schema.org/Person">
>>> <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf- 
>>> schema#Class"/>
>>> <rdfs:label xml:lang="en">Person</rdfs:label>
>>> <rdfs:comment xml:lang="en">A person (alive, dead, undead, or
>>> fictional).</rdfs:comment>
>>> <rdfs:subClassOf rdf:resource="http://schema.org/Thing"/>
>>> <rdfs:isDefinedBy rdf:resource="http://schema.org/Person"/>
>>> </rdf:Description>
>>>
>>> where I see a clear abuse of rdfs:isDefinedBy, since if you  
>>> dereference
>>> the said URI, you don't find any explicit RDF definition ...
>>>
>>> I would rather have the following
>>>
>>> <rdf:Description rdf:about="http://schema.rdfs.org/Person">
>>> <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf- 
>>> schema#Class"/>
>>> <rdfs:label xml:lang="en">Person</rdfs:label>
>>> <rdfs:comment xml:lang="en">A person (alive, dead, undead, or
>>> fictional).</rdfs:comment>
>>> <rdfs:subClassOf rdf:resource="http://schema.rdfs.org/Thing"/>
>>> <dcterms:source rdf:resource="http://schema.org/Person"/>
>>> </rdf:Description>
>>>
>>> To the latter declaration, one could safely add statements like
>>>
>>> schema.rdfs:Person rdfs:subClassOf  foaf:Person
>>>
>>> etc
>>>
>>> Or do I miss the point?
>>>
>>> Bernard
>>>
>>> 2011/6/3 Michael Hausenblas <michael.hausenblas@deri.org>
>>>
>>> http://schema.rdfs.org
>>>
>>> ... is now available - we're sorry for the delay ;)
>>>
>>> Cheers,
>>>       Michael
>>> --
>>> Dr. Michael Hausenblas, Research Fellow
>>> LiDRC - Linked Data Research Centre
>>> DERI - Digital Enterprise Research Institute
>>> NUIG - National University of Ireland, Galway
>>> Ireland, Europe
>>> Tel. +353 91 495730
>>> http://linkeddata.deri.ie/
>>> http://sw-app.org/about.html
>>>
>>>
>>>
>>>
>>>
>>> --
>>> Bernard Vatant
>>> Senior Consultant
>>> Vocabulary & Data Integration
>>> Tel:       +33 (0) 971 488 459
>>> Mail:     bernard.vatant@mondeca.com
>>> ----------------------------------------------------
>>> Mondeca
>>> 3, cité Nollez 75018 Paris France
>>> Web:    http://www.mondeca.com
>>> Blog:    http://mondeca.wordpress.com
>>> ----------------------------------------------------
>>
>>
>>
Received on Wednesday, 8 June 2011 08:56:56 UTC

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