W3C home > Mailing lists > Public > public-lod@w3.org > June 2011

Re: Schema.org in RDF ...

From: Giovanni Tummarello <giovanni.tummarello@deri.org>
Date: Thu, 9 Jun 2011 01:54:30 -0700
Message-ID: <BANLkTi=NLK=jq_DHOrGj7mmpEmKX_xQ3gg@mail.gmail.com>
To: Patrick Logan <patrickdlogan@gmail.com>
Cc: Michael Hausenblas <michael.hausenblas@deri.org>, Bernard Vatant <bernard.vatant@mondeca.com>, Linked Data community <public-lod@w3.org>
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 08:55:22 UTC

This archive was generated by hypermail 2.3.1 : Sunday, 31 March 2013 14:24:33 UTC