Semantic Cognition A Parallel Distributed Processing Approach

ISBN-10: 0262681579

ISBN-13: 9780262681575

Edition: 2006

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Description:

This groundbreaking monograph offers a mechanistic theory of the representation and use of semantic knowledge, integrating the strengths and overcoming many of the weaknesses of hierarchical, categorization-based approaches, similarity-based approaches, and the approach often called "theory theory." Building on earlier models by Geoffrey Hinton in the 1980s and David Rumelhart in the early 1990s, the authors propose that performance in semantic tasks arises through the propagation of graded signals in a system of interconnected processing units. The representations used in performing these tasks are patterns of activation across units, governed by weighted connections among them. Semantic knowledge is acquired through the gradual adjustment of the strengths of these connections in the course of day-to-day experience. The authors show how a simple computational model proposed by Rumelhart exhibits a progressive differentiation of conceptual knowledge, paralleling aspects of cognitive development seen in the work of Frank Keil and Jean Mandler. The authors extend the model to address aspects of conceptual knowledge acquisition in infancy, disintegration of conceptual knowledge in dementia, "basic-level" effects and their interaction with expertise, and many findings introduced to support the idea that semantic cognition is guided by naive, domain-specific theories.
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Book details

List price: $45.00
Copyright year: 2006
Publisher: MIT Press
Publication date: 1/20/2006
Binding: Paperback
Pages: 448
Size: 6.50" wide x 8.50" long x 0.75" tall
Weight: 1.386

Kenneth Williford is Associate Professor of Philosophy and Humanities at the University of Texas, Austin.Timothy T. Rogers is a research scientist at the Medical Research Council Cognition and Brain Sciences Unit in Cambridge, England.

James L. McClelland is Professor of Psychology and Director of the Center for Mind, Brain, and Computation at Stanford University. He is the coauthor of Parallel Distributed Processing (1986) and Semantic Cognition (2004), both published by the MIT Press.

Preface
Categories, Hierarchies, and Theories
A PDP Theory of Semantic Cognition
Latent Hierarchies in Distributed Representations
Emergence of Category Structure in Infancy
Naming Things: Privileged Categories, Familiarity, Typicality, and Expertise
Category Coherence
Inductive Projection and Conceptual Reorganization
The Role of Causal Knowledge in Semantic Task Performance
Core Principles, General Issues, and Future Directions
Simulation Details
Training Patterns
Individuating Specific Items in the Input
Notes
References
Index
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