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Re: Schema.org in RDF ...

From: Martin Hepp <martin.hepp@ebusiness-unibw.org>
Date: Thu, 9 Jun 2011 21:16:34 +0200
Cc: Patrick Logan <patrickdlogan@gmail.com>, Michael Hausenblas <michael.hausenblas@deri.org>, Bernard Vatant <bernard.vatant@mondeca.com>, Linked Data community <public-lod@w3.org>
Message-Id: <91F65FF9-2BA5-4347-8F53-F1E054A999F1@ebusiness-unibw.org>
To: Giovanni Tummarello <giovanni.tummarello@deri.org>
I totally agree with Giovanni.

But the key question will be real deployment - how much actual content will you contribute as compared to all non-academic Web developers.


On Jun 9, 2011, at 10:54 AM, Giovanni Tummarello wrote:

> my2c
> 
> i would seriously advice against using  triples with http://schema.rdfs.org  .
> 
> That  would be totally and entirely validating their claim that either
> you impose things or fragmentation will distroy everything and that
> talking to the community is a waste of time.
> 
> For how little this matters really - i'd really advice anyone wanting
> to produce RDFa of schema to live with it and use direct
> http://schema.org uris as per their example in RDFa.
> 
> Gio
> 
> On Tue, Jun 7, 2011 at 9:49 AM, Patrick Logan <patrickdlogan@gmail.com> 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 Thursday, 9 June 2011 19:17:02 UTC

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