Semantic Cognition: A Parallel Distributed Processing Approach

Semantic Cognition: A Parallel Distributed Processing Approach

by Timothy T. Rogers, James L. McClelland
     
 

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

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Overview

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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Product Details

ISBN-13:
9780262681575
Publisher:
MIT Press
Publication date:
01/20/2006
Series:
Bradford Books Series
Edition description:
New Edition
Pages:
448
Product dimensions:
7.00(w) x 9.00(h) x 0.75(d)
Age Range:
18 Years

Table of Contents

1Categories, hierarchies, and theories1
2A PDP theory of semantic cognition49
3Latent hierarchies in distributed representations83
4Emergence of category structure in infancy121
5Naming things : privileged categories, familiarity, typicality, and expertise175
6Category coherence231
7Inductive projection and conceptual reorganization265
8The role of causal knowledge in semantic task performance297
9Core principles, general issues, and future directions347
App. ASimulation details381
App. BTraining patterns393
App. CIndividuating specific items in the input399

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