Genetic optimization of GRNN for pattern recognition without feature extraction

Authors:
Övünç Polat;Tülay Yıldırım
Affiliations:
Electronics and Communications Engineering Department, Yıldız Technical University, Besiktas, Istanbul 34349, Turkey;Electronics and Communications Engineering Department, Yıldız Technical University, Besiktas, Istanbul 34349, Turkey
Venue:
Expert Systems with Applications: An International Journal
Year:
2008

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Abstract

This paper describes an approach for pattern recognition using genetic algorithm and general regression neural network (GRNN). The designed system can be used for both 3D object recognition from 2D poses of the object and handwritten digit recognition applications. The system does not require any preprocessing and feature extraction stage before the recognition. In GRNN, placement of centers has significant effect on the performance of the network. The centers and widths of the hidden layer neuron basis functions are coded in a chromosome and these two critical parameters are determined by the optimization using genetic algorithms. Experimental results show that the optimized GRNN provides higher recognition ability compared with that of unoptimized GRNN.