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Summary: Comparison of Statistical and Neural Classifiers
and Their Applications to
Optical Character Recognition and Speech Classification
Ethem Alpaydin, Fikret G¨urgen
Department of Computer Engineering
Bo–gazi¸ci University
TR80815 — Istanbul Turkey
falpaydin,gurgeng@boun.edu.tr
Neural Network Systems Techniques and Applications (in print)
C. T. Leondes (Ed.), c
flACADEMIC Press
October 24, 1996
Abstract
We give a review of basic statistical and neural techniques for classification. Statistical tech
niques are based on the idea of estimating classconditional likelihoods and using Bayes rule
to convert these to posterior class probabilities whereas neural techniques estimate directly the
posteriors. Statistical techniques include (i) Parametric (Gaussian) Bayes classifiers, (ii) Non
parametric kernelbased density estimators like knearest neighbor and Parzen windows, and
(iii) mixtures of (Gaussian) densities (a special case of which is the Learning Vector Quanti
zation). As neural classifiers, we include simple perceptrons and multilayer perceptrons with
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