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Re: rdf for object serialization

From: Stefan Haustein <haustein@kimo.cs.uni-dortmund.de>
Date: Thu, 02 Mar 2000 14:29:22 +0100
Message-ID: <38BE6CB2.DFDFBD35@ls8.cs.uni-dortmund.de>
To: Stefan Decker <stefan@db.stanford.edu>, www-rdf-interest@w3.org
Stefan Decker wrote:
> So my solution was to use facets for properties in a namespace "rdfutil"
> (which is preliminary) which allows to define multiple domains and ranges.
> A property can have multiple "facetResources", which defines a set of
> facets for the property separately.
> In your example the property "child" would have two "facetResources", one
> for each domain.

Thanks, that's exactly what I need. Wouldn't it be more 
consistent to name the concept "Facet" instead "facet"?
Can I specify an inverse facet that corresponds to
a facet?

My next problem is: I need to use the serialization format 
in order to express negative facts. E.g. 

Agent A knows:

<Person rdf:about="...">
  <course rdf:ressource="...."/>

Now, I want to inform Agent A that the course is held
by someone else. Since Agent A may know more about 
the person I cannot just send him an updated person 
object, I need to express explicitly that the course 
property is no longer valid. Is there any possibility
to do that in RDF?

Best Regards


Stefan Haustein
University of Dortmund
Computer Science VIII
Received on Thursday, 2 March 2000 08:29:27 UTC

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