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Re: Some questions about the exact meanings

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Thu, 02 Oct 2003 16:06:40 +0100
Message-ID: <3F7C3F00.10507@hplb.hpl.hp.com>
To: Chris Menzel <cmenzel@tamu.edu>
Cc: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>, www-rdf-logic@w3.org

Chris Menzel wrote:

> Fine.  The issue, as you are aware, is just whether properties like
> symmetry should only indicate something contingent about a relation's
> extension or something stronger about its "nature".  Either view can be
> useful.
> Chris Menzel

The WG used the words intensional or extensional in their discussions. i.e. 
does a metaproperty hold only by act of fiat on the part of some ontology 
designer (their intension) or is it a statement reflecting the extension 
(in all interpretations).

On a number of issues we went for extension (I think I initially was not 
too keen but I don't really remember) and once we got a few under our belt 
it made sense to be consistent on this. I would guess that everything which 
could be read extensionally now is.

I see nothing intrinsically wrong in saying that Love is symmetric, if we 
live in such a fortunate world.

Received on Thursday, 2 October 2003 11:17:34 UTC

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