- From: Stefan Haustein <haustein@kimo.cs.uni-dortmund.de>
- Date: Thu, 02 Mar 2000 14:29:22 +0100
- 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="...."/> </Person> 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the person I cannot just send him an updated person object, I need to express explicitly that the course property is no longer valid.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 -- Stefan Haustein University of Dortmund Computer Science VIII www-ai.cs.uni-dortmund.de
Received on Thursday, 2 March 2000 08:29:27 UTC