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Re: Schema.org in RDF ...

From: Antoine Zimmermann <antoine.zimmermann@insa-lyon.fr>
Date: Tue, 07 Jun 2011 10:35:15 +0200
Message-ID: <4DEDE2C3.4070200@insa-lyon.fr>
To: public-lod@w3.org
Le 07/06/2011 10:22, Michael Hausenblas a écrit :
>> 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? ;)

Sure and I'm tempted to believe that this will happen eventually.
Nonetheless, Bernard makes a good point: the URIs, such as 
http://schema.org/Thing, are information resources, as far as 
httpRange14 is concerned. If you guys from the Linked Data Research 
Centre are not following httpRange14 resolution, who will?

Anyway, schema.rdfs.org is very good initiative and an excellent answer 
to schema.org.


AZ.

>
> 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
>> ----------------------------------------------------
>
>


-- 
Antoine Zimmermann
Researcher at:
Laboratoire d'InfoRmatique en Image et Systèmes d'information
Database Group
7 Avenue Jean Capelle
69621 Villeurbanne Cedex
France
Tel: +33(0)4 72 43 61 74 - Fax: +33(0)4 72 43 87 13
Lecturer at:
Institut National des Sciences Appliquées de Lyon
20 Avenue Albert Einstein
69621 Villeurbanne Cedex
France
antoine.zimmermann@insa-lyon.fr
http://zimmer.aprilfoolsreview.com/
Received on Tuesday, 7 June 2011 08:35:45 UTC

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