A Modified Minimum Classification Error (MCE) Training Algorithm for Dimensionality Reduction

Dimensionality reduction is an important problem in pattern recognition. There is a tendency of using more and more features to improve the performance of classifiers. However, not all the newly added features are helpful to classification. Therefore it is necessary to reduce the dimensionality of feature space for effective and efficient pattern recognition. Two popular methods for dimensionality reduction are Linear Discriminant Analysis(LDA) and Principal Component Analysis(PCA). While these methods are effective, there exists an inconsistency between feature extraction and the classification objective. In this paper we use Minimum Classification Error(MCE) training algorithm for feature dimensionality reduction and classification on Deterding and GLASS databases. The results of MCE training algorithms are compared with those of LDA and PCA. keywords: MCE, LDA, PCA, dimensionality reduction, speech recognition