Pattern Classification 2nd Edition by Richard Duda, Peter Hart, David Stork 0471056693 9780471056690

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ISBN 10: 0471056693

ISBN 13: 9780471056690

Author: Richard O. Duda; Peter E. Hart; David G. Stork

The first edition, published in 1973, has become a classic reference in the field. Now with the second edition, readers will find information on key new topics such as neural networks and statistical pattern recognition, the theory of machine learning, and the theory of invariances. Also included are worked examples, comparisons between different methods, extensive graphics, expanded exercises and computer project topics.

Pattern Classification 2nd Table of contents:

1 INTRODUCTION

1.1 Machine Perception

1.2 An Example

1.2.1 Related Fields

1.3 Pattern Recognition Systems

1.3.1 Sensing

1.3.2 Segmentation and Grouping

1.3.3 Feature Extraction

1.3.4 Classification

1.3.5 Post Processing

1.4 The Design Cycle

1.4.1 Data Collection

1.4.2 Feature Choice

1.4.3 Model Choice

1.4.4 Training

1.4.5 Evaluation

1.4.6 Computational Complexity

1.5 Learning and Adaptation

1.5.1 Supervised Learning

1.5.2 Unsupervised Learning

1.5.3 Reinforcement Learning

1.6 Conclusion

Summary by Chapters

Bibliographical and Historical Remarks

Bibliography

2 BAYESIAN DECISION THEORY

2.1 Introduction

2.2 Bayesian Decision Theory—Continuous Features

2.2.1 Two-Category Classification

2.3 Minimum-Error-Rate Classification

2.3.1 Minimax Criterion

2.3.2 Neyman-Pearson Criterion

2.4 Classifiers, Discriminant Functions, and Decision Surfaces

2.4.1 The Multicategory Case

2.4.2 The Two-Category Case

2.5 The Normal Density

2.5.1 Univariate Density

2.5.2 Multivariate Density

2.6 Discriminant Functions for the Normal Density

2.6.1 Case 1: Σi- = σ21

2.6.2 Case 2: Σi- = Σ

2.6.3 Case 3: Σi = arbitrary

Example 1 Decision Regions for Two-Dimensional Gaussian Data

2.7 Error Probabilities and Integrals

2.8 Error Bounds for Normal Densities

2.8.1 Chernoff Bound

2.8.2 Bhattacharyya Bound

Example 2 Error Bounds for Gaussian Distributions

2.8.3 Signal Detection Theory and Operating Characteristics

2.9 Bayes Decision Theory—Discrete Features

2.9.1 Independent Binary Features

Example 3 Bayesian Decisions for Three-Dimensional Binary Data

2.10 Missing and Noisy Features

2.10.1 Missing Features

2.10.2 Noisy Features

2.11 Bayesian Belief Networks

Example 4 Belief Network for Fish

2.12 Compound Bayesian Decision Theory and Context

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

3 MAXIMUM-LIKELIHOOD AND BAYESIAN PARAMETER ESTIMATION

3.1 Introduction

3.2 Maximum-Likelihood Estimation

3.2.1 The General Principle

3.2.2 The Gaussian Case: Unknown μ

3.2.3 The Gaussian Case: Unknown μ and Σ

3.2.4 Bias

3.3 Bayesian Estimation

3.3.1 The Class-Conditional Densities

3.3.2 The Parameter Distribution

3.4 Bayesian Parameter Estimation: Gaussian Case

3.4.1 The Univariate Case: p(μD)

3.4.2 The Univariate Case: p(xD)

3.4.3 The Multivariate Case

3.5 Bayesian Parameter Estimation: General Theory

Example 1 Recursive Bayes Learning

3.5.1 When Do Maximum-Likelihood and Bayes Methods Differ?

3.5.2 Noninformative Priors and Invariance

3.5.3 Gibbs Algorithm

3.6 Sufficient Statistics

3.6.1 Sufficient Statistics and the Exponential Family

3.7 Problems of Dimensionality

3.7.1 Accuracy, Dimension, and Training Sample Size

3.7.2 Computational Complexity

3.7.3 Overfitting

3.8 Component Analysis and Discriminants

3.8.1 Principal Component Analysis (PCA)

3.8.2 Fisher Linear Discriminant

3.8.3 Multiple Discriminant Analysis

3.9 Expectation-Maximization (EM)

Example 2 Expectation-Maximization for a 2D Normal Model

3.10 Hidden Markov Models

3.10.1 First-Order Markov Models

3.10.2 First-Order Hidden Markov Models

3.10.3 Hidden Markov Model Computation

3.10.4 Evaluation

Example 3 Hidden Markov Model

3.10.5 Decoding

Example 4 HMM Decoding

3.10.6 Learning

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

4 NONPARAMETRIC TECHNIQUES

4.1 Introduction

4.2 Density Estimation

4.3 Parzen Windows

4.3.1 Convergence of the Mean

4.3.2 Convergence of the Variance

4.3.3 Illustrations

4.3.4 Classification Example

4.3.5 Probabilistic Neural Networks (PNNs)

4.3.6 Choosing the Window Function

4.4 kn–Nearest-Neighbor Estimation

4.4.1 kn–Nearest-Neighbor and Parzen-Window Estimation

4.4.2 Estimation of A Posteriori Probabilities

4.5 The Nearest-Neighbor Rule

4.5.1 Convergence of the Nearest Neighbor

4.5.2 Error Rate for the Nearest-Neighbor Rule

4.5.3 Error Bounds

4.5.4 The k-Nearest-Neighbor Rule

4.5.5 Computational Complexity of the k–Nearest-Neighbor Rule

4.6 Metrics and Nearest-Neighbor Classification

4.6.1 Properties of Metrics

4.6.2 Tangent Distance

4.7 Fuzzy Classification

4.8 Reduced Coulomb Energy Networks

4.9 Approximations by Series Expansions

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

5 LINEAR DISCRIMINANT FUNCTIONS

5.1 Introduction

5.2 Linear Discriminant Functions and Decision Surfaces

5.2.1 The Two-Category Case

5.2.2 The Multicategory Case

5.3 Generalized Linear Discriminant Functions

5.4 The Two-Category Linearly Separable Case

5.4.1 Geometry and Terminology

5.4.2 Gradient Descent Procedures

5.5 Minimizing the Perceptron Criterion Function

5.5.1 The Perceptron Criterion Function

5.5.2 Convergence Proof for Single-Sample Correction

5.5.3 Some Direct Generalizations

5.6 Relaxation Procedures

5.6.1 The Descent Algorithm

5.6.2 Convergence Proof

5.7 Nonseparable Behavior

5.8 Minimum Squared-Error Procedures

5.8.1 Minimum Squared-Error and the Pseudoinverse

Example 1 Constructing a Linear Classifier by Matrix Pseudoinverse

5.8.2 Relation to Fisher’s Linear Discriminant

5.8.3 Asymptotic Approximation to an Optimal Discriminant

5.8.4 The Widrow-Hoff or LMS Procedure

5.8.5 Stochastic Approximation Methods

5.9 The Ho-Kashyap Procedures

5.9.1 The Descent Procedure

5.9.2 Convergence Proof

5.9.3 Nonseparable Behavior

5.9.4 Some Related Procedures

5.10 Linear Programming Algorithms

5.10.1 Linear Programming

5.10.2 The Linearly Separable Case

5.10.3 Minimizing the Perceptron Criterion Function

5.11 Support Vector Machines

5.11.1 SVM Training

Example 2 SVM for the XOR Problem

5.12 Multicategory Generalizations

5.12.1 Kesler’s Construction

5.12.2 Convergence of the Fixed-Increment Rule

5.12.3 Generalizations for MSE Procedures

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

6 MULTILAYER NEURAL NETWORKS

6.1 Introduction

6.2 Feedforward Operation and Classification

6.2.1 General Feedforward Operation

6.2.2 Expressive Power of Multilayer Networks

6.3 Backpropagation Algorithm

6.3.1 Network Learning

6.3.2 Training Protocols

6.3.3 Learning Curves

6.4 Error Surfaces

6.4.1 Some Small Networks

6.4.2 The Exclusive-OR (XOR)

6.4.3 Larger Networks

6.4.4 How Important Are Multiple Minima?

6.5 Backpropagation as Feature Mapping

6.5.1 Representations at the Hidden Layer—Weights

6.6 Backpropagation, Bayes Theory and Probability

6.6.1 Bayes Discriminants and Neural Networks

6.6.2 Outputs as Probabilities

6.7 Related Statistical Techniques

6.8 Practical Techniques for Improving Backpropagation

6.8.1 Activation Function

6.8.2 Parameters for the Sigmoid

6.8.3 Scaling Input

6.8.4 Target Values

6.8.5 Training with Noise

6.8.6 Manufacturing Data

6.8.7 Number of Hidden Units

6.8.8 Initializing Weights

6.8.9 Learning Rates

6.8.10 Momentum

6.8.11 Weight Decay

6.8.12 Hints

6.8.13 On-Line, Stochastic or Batch Training?

6.8.14 Stopped Training

6.8.15 Number of Hidden Layers

6.8.16 Criterion Function

6.9 Second-Order Methods

6.9.1 Hessian Matrix

6.9.2 Newton’s Method

6.9.3 Quickprop

6.9.4 Conjugate Gradient Descent

Example 1 Conjugate Gradient Descent

6.10 Additional Networks and Training Methods

6.10.1 Radial Basis Function Networks (RBFs)

6.10.2 Special Bases

6.10.3 Matched Filters

6.10.4 Convolutional Networks

6.10.5 Recurrent Networks

6.10.6 Cascade-Correlation

6.11 Regularization, Complexity Adjustment and Pruning

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

7 STOCHASTIC METHODS

7.1 Introduction

7.2 Stochastic Search

7.2.1 Simulated Annealing

7.2.2 The Boltzmann Factor

7.2.3 Deterministic Simulated Annealing

7.3 Boltzmann Learning

7.3.1 Stochastic Boltzmann Learning of Visible States

7.3.2 Missing Features and Category Constraints

7.3.3 Deterministic Boltzmann Learning

7.3.4 Initialization and Setting Parameters

7.4 Boltzmann Networks and Graphical Models

7.4.1 Other Graphical Models

7.5 Evolutionary Methods

7.5.1 Genetic Algorithms

7.5.2 Further Heuristics

7.5.3 Why Do They Work?

7.6 Genetic Programming

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

8 NONMETRIC METHODS

8.1 Introduction

8.2 Decision Trees

8.3 CART

8.3.1 Number of Splits

8.3.2 Query Selection and Node Impurity

8.3.3 When to Stop Splitting

8.3.4 Pruning

8.3.5 Assignment of Leaf Node Labels

Example 1 A Simple Tree

8.3.6 Computational Complexity

8.3.7 Feature Choice

8.3.8 Multivariate Decision Trees

8.3.9 Priors and Costs

8.3.10 Missing Attributes

Example 2 Surrogate Splits and Missing Attributes

8.4 Other Tree Methods

8.4.1 ID3

8.4.2 C4.5

8.4.3 Which Tree Classifier Is Best?

8.5 Recognition with Strings

8.5.1 String Matching

8.5.2 Edit Distance

8.5.3 Computational Complexity

8.5.4 String Matching with Errors

8.5.5 String Matching with the “Don’t-Care” Symbol

8.6 Grammatical Methods

8.6.1 Grammars

8.6.2 Types of String Grammars

Example 3 A Grammar for Pronouncing Numbers

8.6.3 Recognition Using Grammars

8.7 Grammatical Inference

Example 4 Grammatical Inference

8.8 Rule-Based Methods

8.8.1 Learning Rules

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

9 ALGORITHM-INDEPENDENT MACHINE LEARNING

9.1 Introduction

9.2 Lack of Inherent Superiority of Any Classifier

9.2.1 No Free Lunch Theorem

Example 1 No Free Lunch for Binary Data

9.2.2 Ugly Duckling Theorem

9.2.3 Minimum Description Length (MDL)

9.2.4 Minimum Description Length Principle

9.2.5 Overfitting Avoidance and Occam’s Razor

9.3 Bias and Variance

9.3.1 Bias and Variance for Regression

9.3.2 Bias and Variance for Classification

9.4 Resampling for Estimating Statistics

9.4.1 Jackknife

Example 2 Jackknife Estimate of Bias and Variance of the Mode

9.4.2 Bootstrap

9.5 Resampling for Classifier Design

9.5.1 Bagging

9.5.2 Boosting

9.5.3 Learning with Queries

9.5.4 Arcing, Learning with Queries, Bias and Variance

9.6 Estimating and Comparing Classifiers

9.6.1 Parametric Models

9.6.2 Cross-Validation

9.6.3 Jackknife and Bootstrap Estimation of Classification Accuracy

9.6.4 Maximum-Likelihood Model Comparison

9.6.5 Bayesian Model Comparison

9.6.6 The Problem-Average Error Rate

9.6.7 Predicting Final Performance from Learning Curves

9.6.8 The Capacity of a Separating Plane

9.7 Combining Classifiers

9.7.1 Component Classifiers with Discriminant Functions

9.7.2 Component Classifiers without Discriminant Functions

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

10 UNSUPERVISED LEARNING AND CLUSTERING

10.1 Introduction

10.2 Mixture Densities and Identifiability

10.3 Maximum-Likelihood Estimates

10.4 Application to Normal Mixtures

10.4.1 Case 1: Unknown Mean Vectors

10.4.2 Case 2: All Parameters Unknown

10.4.3 k-Means Clustering

10.4.4 Fuzzy k-Means Clustering

10.5 Unsupervised Bayesian Learning

10.5.1 The Bayes Classifier

10.5.2 Learning the Parameter Vector

Example 1 Unsupervised Learning of Gaussian Data

10.5.3 Decision-Directed Approximation

10.6 Data Description and Clustering

10.6.1 Similarity Measures

10.7 Criterion Functions for Clustering

10.7.1 The Sum-of-Squared-Error Criterion

10.7.2 Related Minimum Variance Criteria

10.7.3 Scatter Criteria

Example 2 Clustering Criteria

10.8 Iterative Optimization

10.9 Hierarchical Clustering

10.9.1 Definitions

10.9.2 Agglomerative Hierarchical Clustering

10.9.3 Stepwise-Optimal Hierarchical Clustering

10.9.4 Hierarchical Clustering and Induced Metrics

10.10 The Problem of Validity

10.11 On-line clustering

10.11.1 Unknown Number of Clusters

10.11.2 Adaptive Resonance

10.11.3 Learning with a Critic

10.12 Graph-Theoretic Methods

10.13 Component Analysis

10.13.1 Principal Component Analysis (PCA)

10.13.2 Nonlinear Component Analysis (NLCA)

10.13.3 Independent Component Analysis (ICA)

10.14 Low-Dimensional Representations and Multidimensional Scaling (MDS)

10.14.1 Self-organizing Feature Maps

10.14.2 Clustering and Dimensionality Reduction

Summary

Bibliographical and Historical Remarks

Problems

Computer exercises

Bibliography

A MATHEMATICAL FOUNDATIONS

A.1 Notation

A.2 Linear Algebra

A.2.1 Notation and Preliminaries

A.2.2 Inner Product

A.2.3 Outer Product

A.2.4 Derivatives of Matrices

A.2.5 Determinant and Trace

A.2.6 Matrix Inversion

A.2.7 Eigenvectors and Eigenvalues

A.3 Lagrange Optimization

A.4 Probability Theory

A.4.1 Discrete Random Variables

A.4.2 Expected Values

A.4.3 Pairs of Discrete Random Variables

A.4.4 Statistical Independence

A.4.5 Expected Values of Functions of Two Variables

A.4.6 Conditional Probability

A.4.7 The Law of Total Probability and Bayes Rule

A.4.8 Vector Random Variables

A.4.9 Expectations, Mean Vectors and Covariance Matrices

A.4.10 Continuous Random Variables

A.4.11 Distributions of Sums of Independent Random Variables

A.4.12 Normal Distributions

A.5 Gaussian Derivatives and Integrals

A.5.1 Multivariate Normal Densities

A.5.2 Bivariate Normal Densities

A.6 Hypothesis Testing

A.6.1 Chi-Squared Test

A.7 Information Theory

A.7.1 Entropy and Information

A.7.2 Relative Entropy

A.7.3 Mutual Information

A.8 Computational Complexity

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