>
> Just to provide a little more detail, here is a more complete example:
>
In Top Braid composer, I am creating an ontology with a set of classes:
Superclass: Entity
Subclass: Event, Location, Actor (and a few others)
After creating the classes in the editor, I can look at the RDF for each,
and I get the following types things that look how I expect:
<owl:Class rdf:ID="Entity">
<rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>
</owl:Class>
<owl:Class rdf:ID="Event">
<rdfs:subClassOf rdf:resource="#Entity"/>
<rdfs:comment rdf:datatype="http://www.w3.org/2001/XMLSchema#string";>
</owl:Class>
<owl:Class rdf:ID="Actor">
<rdfs:subClassOf rdf:resource="#Entity"/>
</owl:Class>
<owl:Class rdf:ID="Location">
<rdfs:subClassOf rdf:resource="#Entity"/>
</owl:Class>
However, when I open the RDF file I find that the subclasses are all quite
varied in how they are defined:
<owl:Class rdf:about="#Entity">
<rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>
</owl:Class>
<owl:Class rdf:about="#Event">
<rdfs:subClassOf>
<owl:Class rdf:about="#Entity"/>
</rdfs:subClassOf>
</owl:Class>
<owl:Class rdf:about="#Location">
<rdfs:subClassOf rdf:resource="#Entity"/>
</owl:Class>
<owl:Class rdf:about="#Actor">
<rdfs:subClassOf>
<owl:Class rdf:about="#Entity"/>
</rdfs:subClassOf>
</owl:Class>
As you can see - Event and Actor are defined differently from that of
Location. Can anyone shed some light on
why this is happening and if I can somehow get TopBraid to define them all
consistently? I suspect I'm doing something
wrong that is changing the semantics of the Classes somehow, I'm just not
sure what it is.
Thanks again in advance for any advice.
Cheers,
Chris
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