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Re: Generated RDF conformant with good practise?

From: Matt Halstead <matt.halstead@auckland.ac.nz>
Date: Mon, 20 Sep 2004 14:38:50 +1200
Message-Id: <349BCFDE-0AAE-11D9-8057-000A95B32AC4@auckland.ac.nz>
To: www-rdf-interest@w3.org


On 20/09/2004, at 1:49 PM, Thomas B. Passin wrote:

>
>
> Matt Halstead wrote:
>> This is a good example of something I have wondered about.  If in 
>> fact one wanted to create an RDF schema to describe such a structure, 
>> then it would be nice to be able to describe that the range of 
>> bibterm:book is any resource that has the properties bibterm:year and 
>> dc:title.  Is it possible to do this without making a class to 
>> represent that, or using the syntax and semantics of OWL?  I.e. is it 
>> possible in plain RDF/RDF-S to say that the properties of 
>> bibterm:year and bibterm:title are sufficient for a resource to be a 
>> valid instance?
>
> Well, yes and no.  RDF/RDFS has no inherent semantics that means what 
> you are asking for - that's the job of, i.e., owl - so in that sense, 
> "no".  OTOH, you can define any "terms" you like and use them that 
> way.  In that sense, "yes".  But they won't be standard and so they 
> won't be understood by standard processors.

Yep, I thought that was the case.  Thanks.

>
>> if not, then perhaps it is worth considering a non-anoymous resource 
>> for this relationship so that one can still define the architecture 
>> of the bibterm:book property in RDF/RDF-S semantics.
>
> You can give an anonymous node an rdf:type without having to give it 
> an identifying uri.  So you can actually have both ways in this case.

Yes, that is what I was intending, not sure what I thought URI had to 
do with it.  But I guess there is no real usefulness in typing it 
unless some other property definition wants to refer to that kind of 
thing explicitly.

cheers
Matt


>
> -- 
> Thomas B. Passin
> Explorer's Guide to the Semantic Web (Manning Books)
> http://www.manning.com/catalog/view.php?book=passin
Received on Monday, 20 September 2004 02:40:20 GMT

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