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Classification of Japanese Kanji using principal component analysis as a preprocessor to an artificial neural network
Conference proceeding

Classification of Japanese Kanji using principal component analysis as a preprocessor to an artificial neural network

S.D. Hyman, T.P. Vogl, K.T. Blackwell, G.S. Barbour, J.M. Irvine and D.L. Alkon
IJCNN-91-Seattle International Joint Conference on Neural Networks, Vol.i, pp.233-238 vol.1
1991
DOI: 10.1109/IJCNN.1991.155182

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Abstract

Applies principal component analysis (PCA) to the problem of classifying handwritten Kanji characters. PCA is a statistical tool which can yield substantial data reduction by representing each pattern in terms of a relatively small subset of orthonormal features (principal components) extracted from the input set. A PCA preprocessor to an artificial neural network has been used to reduce the dimensionality of a set of handwritten Kanji patterns to less than 5% of that of the original images. Reconstructions of the patterns from the preprocessed versions are quite impressive. Preliminary results yield nearly 90% correct classification of exemplars of 40 different Kanji characters, and also indicate that reconstruction requires more information than classification. These results demonstrate the effectiveness of PCA as a preprocessor for neural networks.< >
Data Mining Artificial neural networks Cellular networks Covariance matrix Eigenvalues and eigenfunctions Feature extraction Feedforward systems Neural networks Principal component analysis Testing

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