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Re: More on a UML based presentation syntax for OWL

From: Christopher Welty <welty@us.ibm.com>
Date: Mon, 27 May 2002 16:11:50 -0400
To: www-webont-wg@w3.org
Message-ID: <OF31FAD30A.4CBA12F2-ON85256BC6.006E8C2D@pok.ibm.com>

I didn't see the discussion about primitive classes on this list, however 
based on my current understanding the notion is meaningless.  When you 
say, "OWL will have primitive classes", what are you talking about?  What 
is a primitive class?


Dr. Christopher A. Welty, Knowledge Structures Group
IBM Watson Research Center, 19 Skyline Dr.
Hawthorne, NY  10532     USA 
Voice: +1 914.784.7055,  IBM T/L: 863.7055
Fax: +1 914.784.6078, Email: welty@us.ibm.com

Guus Schreiber <schreiber@swi.psy.uva.nl>
Sent by: www-webont-wg-request@w3.org
05/23/2002 09:39 AM

        To:     Evan Wallace <ewallace@cme.nist.gov>
        cc:     www-webont-wg@w3.org
        Subject:        Re: More on a UML based presentation syntax for OWL


> Primitive class note
> UML classes are primitiveClasses.  After all the discussion regarding
> primitive and defined classes on the webont list, I am unsure that a
> notion of primitive class will exist at all in OWL.  This seems like
> it could be a problem for a UML presentation syntax.  At a minimum,
> the issue will need to be clearly identified and explained for users
> of the UML presentation syntax.

OWL will have primitive classes. As UML "class" stands for a primitive
class we should just call them "class" in OWL as well. Defined classes
could be out of scope for the UML presentation syntax (I included an
example in my note, but it has uses a self defined stereotype, of which
the semantics is not defined by UML).
Received on Monday, 27 May 2002 16:12:26 UTC

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