Michael Thomas (1998) Connectionism is a Progressive Research Programme:
. Psycoloquy: 9(36) Connectionist Explanation (29)
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Psycoloquy 9(36): Connectionism is a Progressive Research Programme:
CONNECTIONISM IS A PROGRESSIVE RESEARCH PROGRAMME:
"COGNITIVE" CONNECTIONIST MODELS ARE JUST MODELS
Commentary on Green on Connectionist-Explanation
Michael Thomas
Department of Psychology
King Alfred's University College
Winchester
Hants SO22 4NR
Tony Stone
Division of Psychology
South Bank University
London SE1 0AA
michael.thomas@psy.ox.ac.uk
stonea@sbu.ac.uk
Abstract
Connectionist models are cognitive models which can serve
two functions. They can demonstrate the computational feasibility
of a cognitive theory (in this sense they model cognitive
theories), or they can suggest new ways of conceiving the
functional structure of the cognitive system. The latter leads to
connectionist theories with new theoretical constructs, such as
stable attractors, or soft constraint satisfaction. A number of
examples of connectionist models and theories demonstrate the
fertility of connectionism, a progressive research programme in
Lakatos's (1970) sense. Green's (1998a) specificity argument
against connectionist theoretical constructs fails because it
relies upon a simplistic view of theoretical constructs that would
undermine even the "gene" construct, Green's paradigmatic example
of a theoretical entity in good standing. This view of theoretical
entities is based upon a simplistic Popperian picture of science.
Keywords
artificial intelligence, cognition, computer modelling,
connectionism, epistemology, explanation, methodology, neural nets,
philosophy of science, theory.
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