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.hausenb...@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.vat...@mondeca.com
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