cunningB@monroe-emh1.army.mil
:Bill Cunningham 920612.1345:
Forwarding a note from John Gabriel, to whom I relay much CSG-L traffic.
Somebody else's attempt to reproducibly model unreproducible (portrayal of)
experience was the reason for us meeting some years ago and motivates
our current exploration, for which HPCT provides the paradigm./wbc
···
Date: Thu, 11 Jun 92 21:29:54 CDT
From: gabriel@eid.anl.gov (John Gabriel)
Subject: Re: Perceptual Learning
Yes, the symmetry theory is one of my special interests, so thanks. What
Martin is saying is that the perceptual mechanism knows how things look
after being turned over, rotated or whatever from experience with various
objects. Circular means "same after rotation by any angle about normal
to plane of object". My background says a little more than Bill P. or Martin
perceive - that "well understood" experiences are all invariants, and
that symmetry or invariance is an important part of learning - particularly
time invariance, i.e. repeated experience from which PCT references are
constructed. In fact my other serious research interest at the moment is a
proof that any computer program (i.e. reproducible computation) is completely
defined by one input/output pair of values, and the set of all the invariants
of the program. Obvious in a way, but not observed until my recent paper to be
published in Beijing. The mathematics of PROPER proof is formidable. If we
take the view that any reproducible (understood?) experience can be modelled
by a computer simulation, this is a perhaps a useful result about PCT.
Please forward to CSG NET if you feel this would be a useful contribution.
::John