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Abdelhadi Lotfi
Cross-Validation Probabilistic Neural Network Based Face Identification
Abdelhadi Lotfi and Abdelkader Benyettou
Page: 1075~1086, Vol. 14, No.5, 2018
10.3745/JIPS.04.0085
Keywords: Biometrics, Classification, Cross-Validation, Face Identification, Optimization, Probabilistic Neural Networks
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Cross-Validation Probabilistic Neural Network Based Face Identification
Abdelhadi Lotfi and Abdelkader Benyettou
Page: 1075~1086, Vol. 14, No.5, 2018

Keywords: Biometrics, Classification, Cross-Validation, Face Identification, Optimization, Probabilistic Neural Networks
Show / Hide Abstract
In this paper a cross-validation algorithm for training probabilistic neural networks (PNNs) is presented in
order to be applied to automatic face identification. Actually, standard PNNs perform pretty well for small
and medium sized databases but they suffer from serious problems when it comes to using them with large
databases like those encountered in biometrics applications. To address this issue, we proposed in this work a
new training algorithm for PNNs to reduce the hidden layer’s size and avoid over-fitting at the same time.
The proposed training algorithm generates networks with a smaller hidden layer which contains only
representative examples in the training data set. Moreover, adding new classes or samples after training does
not require retraining, which is one of the main characteristics of this solution. Results presented in this work
show a great improvement both in the processing speed and generalization of the proposed classifier. This
improvement is mainly caused by reducing significantly the size of the hidden layer.