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On the proper treatment of connectionism

Published online by Cambridge University Press:  04 February 2010

Paul Smolensky
Paul Smolensky
Affiliation:
Department of Computer Science and Institute of Cognitive Science, University of Colorado, Boulder, Colo. 80309-0430
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Abstract

A set of hypotheses is formulated for a connectionist approach to cognitive modeling. These hypotheses are shown to be incompatible with the hypotheses underlying traditional cognitive models. The connectionist models considered are massively parallel numerical computational systems that are a kind of continuous dynamical system. The numerical variables in the system correspond semantically to fine-grained features below the level of the concepts consciously used to describe the task domain. The level of analysis is intermediate between those of symbolic cognitive models and neural models. The explanations of behavior provided are like those traditional in the physical sciences, unlike the explanations provided by symbolic models.

Higher-level analyses of these connectionist models reveal subtle relations to symbolic models. Parallel connectionist memory and linguistic processes are hypothesized to give rise to processes that are describable at a higher level as sequential rule application. At the lower level, computation has the character of massively parallel satisfaction of soft numerical constraints; at the higher level, this can lead to competence characterizable by hard rules. Performance will typically deviate from this competence since behavior is achieved not by interpreting hard rules but by satisfying soft constraints. The result is a picture in which traditional and connectionist theoretical constructs collaborate intimately to provide an understanding of cognition.

Keywords

cognitioncomputationconnectionismdynamical systemsnetworksneural modelsparallel distributed processingsymbolic models
Type
Target Article
Information
Behavioral and Brain Sciences , Volume 11 , Issue 1 , March 1988 , pp. 1 - 23
Copyright
Copyright © Cambridge University Press 1988

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