Fuzzy Logic and Probability Applications ASA-SIAM Series on Statistics and Applied Probability The ASA-SIAM Series on Statistics and Applied Probability is published jointly by the American Statistical Association and the Society for Industrial and Applied Mathematics. The series consists of a broad spectrum of books on topics in statistics and applied probability. The purpose of the series is to provide inexpensive, quality publications of interest to the intersecting membership of the two societies. Editorial Board Robert N. Rodriguez Lisa LaVange SAS Institute Inc., Editor-in-Chief Inspire Pharmaceuticals, Inc. Janet P. Buckingham Gary C. McDonald Southwest Research Institute National Institute of Statistical Sciences Richard K. Burdick Arizona State University Paula Roberson University of Arkansas James A. Calvin for Medical Sciences Texas A&M University Dale L. Zimmerman Katherine Bennett Ensor University of Iowa Rice University Douglas M. Hawkins University of Minnesota Ross, T. J., Booker, J. M., and Parkinson, W. J., eds., Fuzzy Logic and Probability Applications: Bridging the Gap Nelson, W., Recurrent Events Data Analysis for Product Repairs, Disease Recurrence, and Other Applications Mason, R. L. and Young, J. C, Multivariate Statistical Process Control with Industrial Applications Smith, P. L., A Primer for Sampling Solids, Liquids, and Gases: Based on the Seven Sampling Errors of Pierre Gy Meyer, M. A. and Booker, J. M., Eliciting and Analyzing Expert Judgment: A Practical Guide Latouche, G. and Ramaswami, V., Introduction to Matrix Analytic Methods in Stochastic Modeling Peck, R., Haugh, L., and Goodman, A., Statistical Case Studies: A Collaboration Between Academe and Industry, Student Edition Peck, R., Haugh, L., and Goodman, A., Statistical Case Studies: A Collaboration Between Academe and Industry Barlow, R., Engineering Reliability Czitrom, V. and Spagon, P. D., Statistical Case Studies for Industrial Process Improvement Fuzzy Logic and Probability Applications Bridging the Gap Edited by Timothy J. Ross University of New Mexico Albuquerque, New Mexico Jane M. Booker Los Alamos National Laboratory Los Alamos, New Mexico W. Jerry Parkinson Los Alamos National Laboratory Los Alamos, New Mexico ASA Society for Industrial and Applied Mathematics American Statistical Association Philadelphia, Pennsylvania Alexandria, Virginia The correct bibliographic citation for this book is as follows: Ross, Timothy J., Jane M. Booker, and W. Jerry Parkinson, eds., Fuzzy Logic and Probability Applications: Bridging the Cap, ASA-SIAM Series on Statistics and Applied Probability, SIAM, Philadelphia, ASA, Alexandria, VA, 2002. Copyright © 2002 by the American Statistical Association and the Society for Industrial and Applied Mathematics. 10987654321 All rights reserved. Printed in the United States of America. No part of this book may be reproduced, stored, or transmitted in any manner without the written permission of the publisher. For information, write to the Society for Industrial and Applied Mathematics, 3600 University City Science Center, Philadelphia, PA 19104-2688. Library of Congress Cataloging-in-Publication Data Fuzzy logic and probability applications : bridging the gap / edited by Timothy J. Ross, Jane M. Booker, W. Jerry Parkinson. p. cm. — (ASA-SIAM series on statistics and applied probability) Includes bibliographical references and index. ISBN 0-89871-525-3 1. Fuzzy logic. 2. Probabilities. 3. Fuzzy logic—Industrial applications. 4. Probabilities—Industrial applications. I. Ross, Timothy J. II. Booker, Jane M. III. Parkinson, W. J. (William Jerry), 1939- IV. Series. QA9.64.F8942002 511.3-dc21 2002075756 Corel and Painter are trademarks and registered trademarks of Corel Corporation or Corel Corporation Limited in Canada, the United States, and/or other countries. Fuldek is a registered trademark of Bell Helicopter Textron, Inc. IBM is a registered trademark of IBM Corporation in the United States. PhotoShop is a registered trademark of Adobe Microsystems Incorporated in the United States and/or other countries. SmartPhotoLab is a registered trademark of The Center for Autonomous Control Engineering (ACE), University of New Mexico, Albuquerque, NM. is a registered trademark. To the memory of our colleague and his inspiration for this book, Dr. Thomas (Tom) R. Bement, Los Alamos, New Mexico List of Contributors Hrishikesh Aradhye Yohans Mendoza SRI International Sirius Images, Inc. Thomas R. Bement (dec.) Mary A. Meyer Los Alamos National Laboratory Los Alamos National Laboratory Jane M. Booker William S. Murray Los Alamos National Laboratory Los Alamos National Laboratory Kenneth B. Butterfield Roberto A. Osegueda Los Alamos National Laboratory University of Texas at El Paso Aly El-Osery W. Jerry Parkinson New Mexico Institute of Mining and Los Alamos National Laboratory Technology Timothy J. Ross Carlos Ferregut University of New Mexico University of Texas at El Paso Kimberly F. Sellers Mo Jamshidi Carnegie Mellon University University of New Mexico Nozer D. Singpurwalla A. Sharif Heger George Washington University Los Alamos National Laboratory Ronald E. Smith Vladik Kreinovich Los Alamos National Laboratory University of Texas at El Paso Jonathan L. Lucero University of New Mexico Contents Foreword xv Lotfi A. Zadeh Foreword xix Patrick Suppes Preface xxi Acknowledgments xxiii Part I. Fundamentals 1 Jane M. Booker 1.1 Chapters 1-6 1 1.2 Suggested reading 2 References 2 1 Introduction 3 Timothy J. Ross, Jane M. Booker, and W. Jerry Parkinson 1.1 Some history and initial thoughts 3 1.2 The great debate 6 1.2.1 The debate literature 6 1.2.2 The issues and controversy 7 1.3 Fuzzy logic and probability: The best of both worlds 20 1.4 Organization of the book 22 References 24 2 Fuzzy Set Theory, Fuzzy Logic, and Fuzzy Systems 29 Timothy J. Ross and W. Jerry Parkinson 2.1 Introduction 29 2.1.1 Fuzzy sets 31 2.1.2 Fuzzy set operations 32 2.2 Fuzzy relations 34 2.2.1 Operations on fuzzy relations 34 2.2.2 Fuzzy Cartesian product and composition 35 2.3 Fuzzy and classical logic 36 2.3.1 Classical logic 36 2.3.2 Fuzzy logic 41 2.3.3 Approximate reasoning 43 vii viii Contents 2.3.4 Fuzzy systems 43 2.3.5 An example numerical simulation 46 2.3.6 Summary 52 References 53 3 Probability Theory 55 Nozer D. Singpunvalla, Jane M. Booker, and Thomas R. Bement 3.1 The calculus of probability 55 3.2 Popular views of probability 57 3.2.1 The interpretation of probability 57 3.2.2 The classical theory of probability 57 3.2.3 The a priori theory of probability 58 3.2.4 The relative frequency theory 58 3.2.5 The personalistic or subjective theory 60 3.2.6 Choosing an interpretation of probability 61 3.2.7 The use of expert testimonies in personalistic/subjective probability 62 3.3 Concepts for probability theory 63 3.3.1 Concepts of a random variable and sample space 63 3.3.2 Probability distribution functions 64 3.3.3 Conditional probability and dependence 66 3.3.4 Comparing distributions 66 3.3.5 Representing data, information, and uncertainties as distributions 67 3.4 Information, data, and knowledge 68 References 69 4 Bayesian Methods 73 Kimberly F. Sellers and Jane M. Booker 4.1 Introduction 73 4.2 Probability theory of Bayesian methods 76 4.2.1 The incorporation of actual information (expansion of H) 77 4.2.2 The likelihood principle 78 4.2.3 Distribution function formulation of Bayes'theorem . .. 78 4.3 Issues with Bayes' theory 79 4.3.1 Criticisms and interpretations of Bayes'theorem 79 4.3.2 Uses and interpretations 80 4.4 Bayesian updating: Implementation of Bayes' theorem in practical ap- plications 81 4.4.1 Binomial/beta example 81 4.4.2 Exponential/gamma example 82 4.4.3 Normal/normal example 82 4.5 Bayesian networks 83 4.6 Relationship with fuzzy sets 85 References 85 5 Considerations for Using Fuzzy Set Theory and Probability Theory 87 Timothy J. Ross, Kimberly F. Sellers, and Jane M. Booker 5.1 Vagueness, imprecision, and chance: Fuzziness versus probability . . . 87 Contents ix 5.1.1 A historical perspective on vagueness 88 5.1.2 Imprecision 89 5.2 Chance versus vagueness 89 5.3 Many-valued logic 90 5.4 Axiomatic structure of probability and fuzzy logics 91 5.4.1 Relationship between vagueness and membership functions 94 5.4.2 Relationship between fuzzy set theory and Bayesian analysis 95 5.5 Early works comparing fuzzy set theory and probability theory . . .. 95 5.6 Treatment of uncertainty and imprecision: Treating membership functions as likelihoods 97 5.7 Ambiguity versus chance: Possibility versus probability 98 5.8 Conclusions 102 References 103 6 Guidelines for Eliciting Expert Judgment as Probabilities or Fuzzy Logic 105 Mary A. Meyer, Kenneth B. Butterfield, William S. Murray, Ronald E. Smith, and Jane M. Booker 6.1 Introduction 105 6.2 Method 106 6.2.1 Illustration 106 6.2.2 Summary table of phases and steps 108 6.2.3 Phases and steps for expert elicitation 108 6.3 Summary 121 References 122 Part II. Applications 125 Timothy J. Ross II. 1 Chapters 7-15 125 7 Image Enhancement: Probability Versus Fuzzy Expert Systems 127 Aly El-Osery and Mo Jamshidi 7.1 Introduction 127 7.2 Background 128 7.2.1 Digital image-processing elements 128 7.2.2 Image formats 128 7.2.3 Spatial domain 132 7.2.4 Probability density function 132 7.3 Histogram equalization 133 7.4 Expert systems and image enhancement 137 7.4.1 SOI detection 138 7.4.2 Fuzzy expert system development 139 7.4.3 Example 139 7.5 Final remarks 143 References 143 8 Engineering Process Control 145 W. Jerry Parkinson and Ronald E. Smith 8.1 Introduction 145
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