SUO: Re: The lattice of theories
Frank,
----- Original Message -----
From: "Frank Farance" <frank@farance.com>
To: <standard-upper-ontology@ieee.org>
Sent: Monday, June 10, 2002 8:47 AM
Subject: SUO: The lattice of theories
> One reason for keeping slightly different representations is to deal with
"drift" over time ("terminology drift", "concept drift", etc.). It might be
useful to have the 1970-timeframe thinking available, even though
(presuably) the 2002-thinking would be more up-to-date. For practical
reasons, both would need to be available.
Within a concept lattice, drift might be represented by the addition or
deletion of attributes (in the conceptual intent). If concept C1 has
attributes a, b and c and concept C2 has attributes b, c and d, then
subtracting attribute a from the intent of C1 moves us up to a higher
concept in the lattice hierarchy. Adding attribute d to the intent of this
higher concept moves us down to C2. Overall, a sideways movement. If an
attribute external to the lattice is of interest, then we will be involved,
either directly or indirectly, with morphisms between concept lattices and
the construction of new concept lattices using operations such as limits,
colimits, apposition, subposition, tensor product, etc.
Robert E. Kent
rekent@ontologos.org