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Re: Wiki page on Goals

From: Thomas Baker <tbaker@tbaker.de>
Date: Fri, 3 Dec 2010 12:44:43 -0500
To: "Young,Jeff (OR)" <jyoung@oclc.org>
Cc: Emmanuelle Bermes <manue.fig@gmail.com>, Mark van Assem <mark@cs.vu.nl>, public-xg-lld <public-xg-lld@w3.org>
Message-ID: <20101203174443.GA2172@octavius>
Hi Jeff,

On Fri, Dec 03, 2010 at 12:27:54PM -0500, Jeff Young wrote:
> The OWL solution would be for DC to coin owl:DatatypeProperties and
> owl:ObjectProperties as rdfs:subPropertyOf of their existing
> rdf:Properties. As distasteful as that is, I assume that rules-based
> alternatives will be ignored.

DCMI has already declared http://purl.org/dc/terms/creator with
a range of dcterms:Agent, and it is indeed a sub-property of
http://purl.org/dc/elements/1.1/creator (the property which
is _probably_ intended in the example below because the /1.1/
namespace is most commonly bound to the dc: prefix).  I'd like
to understand better what specific advantage DCMI would gain
by declaring it as an owl:ObjectProperty as opposed to leaving
it as an RDF property with a resource class as its range.

You are not the first person to propose this, but in order
to progress this proposal, DCMI would need to have a clear
understanding of the benefits, and whether the interpretation
of existing data would be at all negatively impacted by the 
change.

Tom

> 
> Jeff
> 
> > Another question about RELATE(existing) :
> > relationships may exist in the data but be totally implicit. If you
> > make them explicit, is it a new relationship, or an existing one ?
> > Example (very simplified) :
> > 
> > (implicit relationship)
> > http://example.com/book1 dc:creator "J.R.R. Tolkien"
> > http://example.com/book2 dc:creator "J.R.R.Tolkien"
> > http://viaf.org/viaf/95218067 foaf:name "Tolkien, J.R.R. (John Ronald
> > Reuel), 1892-1973"
> > 
> > (same relationship made explicit)
> > http://example.com/book1 dc:creator http://viaf.org/viaf/95218067
> > http://example.com/book2 dc:creator http://viaf.org/viaf/95218067
> > http://viaf.org/viaf/95218067 foaf:name "Tolkien, J.R.R. (John Ronald
> > Reuel), 1892-1973"
> 

-- 
Thomas Baker <tbaker@tbaker.de>
Received on Friday, 3 December 2010 17:45:22 GMT

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