On Tue, Feb 8, 2011 at 2:49 PM, Young,Jeff (OR) <jyoung@oclc.org> wrote:
> Returning to the original discussion, the class being discussed is Concept,
> with individual concepts being its “extension” (as per OWL). For example, I
> can believe that “Tumor” is an individual in the class extension of Concept.
> I have a harder time believing “Tumor” is a document or set of documents.
>
Ah - I see the confusion here.
Tumors-The-KOS-Concept is a Concept; what it denotes is the set of Documents
which are about [Tumors-The-Biological-Objects].
For the model theoretic semantics of RDF, see Hayes (2004) -
http://www.w3.org/TR/rdf-mt/
Simon