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Evaluation of Neural Pattern Classifiers for a Remote Sensing Application

Manfred Fischer, Sucharita Gopal, Petra Staufer and Klaus Steinnocher

MPRA Paper from University Library of Munich, Germany

Abstract: This paper evaluates the classification accuracy of three neural network classifiers on a satellite image-based pattern classification problem. The neural network classifiers used include two types of the Multi-Layer-Perceptron (MLP) and the Radial Basis Function Network. A normal (conventional) classifier is used as a benchmark to evaluate the performance of neural network classifiers. The satellite image consists of 2,460 pixels selected from a section (270 x 360) of a Landsat-5 TM scene from the city of Vienna and its northern surroundings. In addition to evaluation of classification accuracy, the neural classifiers are analysed for generalization capability and stability of results. Best overall results (in terms of accuracy and convergence time) are provided by the MLP-1 classifier with weight elimination. It has a small number of parameters and requires no problem-specific system of initial weight values. Its in-sample classification error is 7.87% and its out-of-sample classification error is 10.24% for the problem at hand. Four classes of simulations serve to illustrate the properties of the classifier in general and the stability of the result with respect to control parameters, and on the training time, the gradient descent control term, initial parameter conditions, and different training and testing sets.

Keywords: Neural Classifiers; Classification of Multispectral Image Data; Pixel-by-Pixel Classification; Backpropagation; Sensitivity Analysis (search for similar items in EconPapers)
JEL-codes: C45 (search for similar items in EconPapers)
Date: 1995
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Published in Geographical Systems 2.4(1997): pp. 195-226

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