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Re: Schema.org in RDF ...

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Thu, 09 Jun 2011 11:05:24 +0100
Message-ID: <4DF09AE4.4070406@openlinksw.com>
To: public-lod@w3.org
On 6/9/11 9:58 AM, Michael Hausenblas wrote:
>
>> 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.

URL of the example in question?


Kingsley
>
> +1
>
> 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 9 Jun 2011, at 09:54, 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
>>>>> ----------------------------------------------------
>>>>
>>>>
>>>>
>>>
>>>
>
>
>


-- 

Regards,

Kingsley Idehen	
President&  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
Received on Thursday, 9 June 2011 10:05:53 UTC

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