Kohonen Self-Organization and Associative Memory

3rd Auflage 1989
ISBN: 978-3-642-88163-3
Verlag: Springer
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, Band 8, 312 Seiten, eBook

Reihe: Springer Series in Information Sciences

While the present edition is bibliographically the third one of Vol. 8 of the Springer Series in Information Sciences (IS 8), the book actually stems from Vol. 17 of the series Communication and Cybernetics (CC 17), entitled Associative Memory - A System-Theoretical Approach, which appeared in 1977. That book was the first monograph on distributed associative memories, or "content-addressable memories" as they are frequently called, especially in neural-networks research. This author, however, would like to reserve the term "content-addressable memory" for certain more traditional constructs, the memory locations of which are selected by parallel search. Such devices are discussed in Vol. 1 of the Springer Series in Information Sciences, Content-Addressable Memories. This third edition of IS 8 is rather similar to the second one. Two new discussions have been added: one to the end of Chap. 5, and the other (the L VQ 2 algorithm) to the end of Chap. 7. Moreover, the convergence proof in Sect. 5.7.2 has been revised.

Zielgruppe

Research

Autoren/Hrsg.

Kohonen, Teuvo

Inhaltsverzeichnis

1. Various Aspects of Memory.- 1.1 On the Purpose and Nature of Biological Memory.- 1.2 Questions Concerning the Fundamental Mechanisms of Memory.- 1.3 Elementary Operations Implemented by Associative Memory.- 1.4 More Abstract Aspects of Memory.- 2. Pattern Mathematics.- 2.1 Mathematical Notations and Methods.- 2.2 Distance Measures for Patterns.- 3. Classical Learning Systems.- 3.1 The Adaptive Linear Element (Adaline).- 3.2 The Perceptron.- 3.3 The Learning Matrix.- 3.4 Physical Realization of Adaptive Weights.- 4. A New Approach to Adaptive Filters.- 4.1 Survey of Some Necessary Functions.- 4.2 On the “Transfer Function” of the Neuron.- 4.3 Models for Basic Adaptive Units.- 4.4 Adaptive Feedback Networks.- 5. Self-Organizing Feature Maps.- 5.1 On the Feature Maps of the Brain.- 5.2 Formation of Localized Responses by Lateral Feedback.- 5.3 Computational Simplification of the Process.- 5.4 Demonstrations of Simple Topology-Preserving Mappings.- 5.5 Tonotopic Map.- 5.6 Formation of Hierarchical Representations.- 5.7 Mathematical Treatment of Self-Organization.- 5.8 Automatic Selection of Feature Dimensions.- 6. Optimal Associative Mappings.- 6.1 Transfer Function of an Associative Network.- 6.2 Autoassociative Recall as an Orthogonal Projection.- 6.3 The Novelty Filter.- 6.4 Autoassociative Encoding.- 6.5 Optimal Associative Mappings.- 6.6 Relationship Between Associative Mapping, Linear Regression, and Linear Estimation.- 6.7 Recursive Computation of the Optimal Associative Mapping.- 6.8 Special Cases.- 7. Pattern Recognition.- 7.1 Discriminant Functions.- 7.2 Statistical Formulation of Pattern Classification.- 7.3 Comparison Methods.- 7.4 The Subspace Methods of Classification.- 7.5 Learning Vector Quantization.- 7.6 Feature Extraction.- 7.7 Clustering.- 7.8Structural Pattern Recognition Methods.- 8. More About Biological Memory.- 8.1 Physiological Foundations of Memory.- 8.2 The Unified Cortical Memory Model.- 8.3 Collateral Reading.- 9. Notes on Neural Computing.- 9.1 First Theoretical Views of Neural Networks.- 9.2 Motives for the Neural Computing Research.- 9.3 What Could the Purpose of the Neural Networks be?.- 9.4 Definitions of Artificial “Neural Computing” and General Notes on Neural Modelling.- 9.5 Are the Biological Neural Functions Localized or Distributed?.- 9.6 Is Nonlinearity Essential to Neural Computing?.- 9.7 Characteristic Differences Between Neural and Digital Computers.- 9.8 “Connectionist Models”.- 9.9 How can the Neural Computers be Programmed?.- 10. Optical Associative Memories.- 10.1 Nonholographic Methods.- 10.2 General Aspects of Holographic Memories.- 10.3 A Simple Principle of Holographic Associative Memory.- 10.4 Addressing in Holographic Memories.- 10.5 Recent Advances of Optical Associative Memories.- Bibliography on Pattern Recognition.- References.