W3C home > Mailing lists > Public > public-rdf@w3.org > March 2012

Re: Can't RDF describe collection resources?

From: Enrico Franconi <franconi@inf.unibz.it>
Date: Thu, 1 Mar 2012 10:59:16 +0100
Cc: public-rdf@w3.org, public-rdf-wg@w3.org, W3C SWIG Mailing-List <semantic-web@w3.org>
Message-Id: <F9A0F068-AFF8-4099-AAC6-7549349C1912@inf.unibz.it>
To: Ruben Verborgh <ruben.verborgh@ugent.be>

On 1 Mar 2012, at 10:48, Ruben Verborgh wrote:

>> I don't get this. Remember that with this modelling you would have at your disposal both :hasComments and :hasComment, being them redundantly constrained by the property chain axiom. You can use any of the two interchangeably. In aprticular, you can use just :hasComment and ignore systematically :hasComments in your application (but when you need to create the comments resource once forever for a newly created blog) and everything would be fine. To be more precise, you need also to state that the :hasComments property is functional, so that you could add (or refer to) a comment as a :hasComment without bothering mentioning the comments resource.
> If I understand correctly, you argue that the :hasComment property is redundant, because it is equivalent to the composition of :hasComments and :memberOf.

They are *mutually* redundant. And I guess I got your problem here by saying that you can always use just the singular :hasComment property, both in reading and in writing, since automatically the "filling" of the :hasComments and :memberOf properties would be handled automatically if you have the owl axioms I was proposing.

> (The :hasComments is then not redundant, for cases where the comment set is empty.)
> So what I meant, is that the majority of existing data (and properties) have been described with the singular properties, because thatís just easier in RDF.

See above. I understood your issue, but I believe that the modelling I propose is working fine for your needs.


Received on Thursday, 1 March 2012 09:59:45 UTC

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