RE: OWL newbie Question


There are reasons for and against representing topics as classes and
relating them via subClassOf. Natasha Noy at Stanford has written a
useful overview of the issues which you may want to look at. I'm offline
and don't have the reference to hand but I think it's entitled "Using
Classes as Property Values" and can be found on the W3C website

In the SEKT project ( we are also looking at the
ontological representation of a document classification scheme and other
associated metadata in the context of a Digital Library case study. If
you are interested, email me off-list for a further discussion.

John Davies. 

John Davies 
Manager, Next Generation Web Research
BT Group
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-----Original Message-----
[] On Behalf Of Michael Engelhardt
Sent: 08 December 2004 10:10
Subject: OWL newbie Question

Hello out there,
I am currently trying to perform my first steps in the OWL world. Since
searching for a simple and useful example I want to build up the ACM
classification index in OWL. My approach is to express each
classification entry as an owl:class concept, relating them via
rdfs:subClassOf. That is pretty simple. However the ACM classification
index encodes references between certain entries too (e.g. B.2.3
["Reliability, Testing, and Fault-Tolerance Reliability, Testing, and
Fault-Tolerance"] is related to B.8 ["Performance and Reliability"]) .
So my question here is how to model those references in OWL. I believe
using the equivalentClass construct is not appropriate, because those
classes have not same instances. 
Could anybody give me an enlightening idea please?

thanks in advance 

Michael Engelhardt


Received on Wednesday, 8 December 2004 12:18:28 UTC