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Re: Schema.org in RDF ...

From: Giovanni Tummarello <giovanni.tummarello@deri.org>
Date: Thu, 9 Jun 2011 10:13:08 -0700
Message-ID: <BANLkTinZzzUS4F8fagj8_mxwRQ5rjga7Ug@mail.gmail.com>
To: Kingsley Idehen <kidehen@openlinksw.com>
Cc: public-lod@w3.org
http://schema.org/docs/datamodel.html

On Thu, Jun 9, 2011 at 3:05 AM, Kingsley Idehen <kidehen@openlinksw.com> wrote:
> 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 17:14:06 UTC

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