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Contents
Introduction
Background
Organization of this work
Self-Organizing Map
Artificial neural networks
Self-Organizing Map (SOM)
Data preprocessing
Focusing on a subset of data
Removing erroneous data
Data encoding
Scaling
Initialization
Random initialization
Initialization using initial samples
Linear initialization
Training
Update rule
Neighborhood function
Learning rate
Visualization
U-matrix
Sammon's mapping
Component plane representation
Validation
Applications
Principal component analysis
Principal component analysis
Models
General
SOM as a regression model
SOM and local model fitting
Case study: Rautaruukki
Problem domain
Process data
Data preprocessing
Training a SOM
The U-matrix representation
Sammon mapping of the SOM
Using SOM as a regression model
Predicting quality parameters
Sensitivity analysis
Using SOM and local model fitting
Conclusions
References
About this document ...
Jaakko Hollmen
Fri Mar 8 13:44:32 EET 1996