Vol 12, No 4

Winter 1991

Table of Contents

Letters

Michael J. Pazzani, Robert Neches
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8

Editorials

Robert S. Engelmore
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6

Articles

Roger C. Schank
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38
Eugene Charniak
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50
Max Henrion, John S. Breese, Eric J. Horvitz
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64

Reports

Raul E. Valdes-Perez
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11
Walter Hamscher
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15
William Lim, Philip Kahn, Daphna Weinshall, Andrew Blake
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25
AAAI
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31

Book Reviews

Robert P. Goldman
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90
Gabriel Valiente
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96
Roland J. Zito-Wolf
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97

Departments

R. Peter Bonasso
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4
AAAI
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9