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Handwritten digit recognition with principal component analysis and radial basis functions

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2 Author(s)
Deco, G. ; Corp. Res., Siemens AG, Munich, Germany ; Blasig, R.

We introduce a new growing neural architecture together with a learning paradigm which uses radial basis functions (RBFs) and principal component analysis (PCA). In the first layer linear neurons perform singular value decomposition in order to decorrelate the input data. For each rotated axis (principal component) the network provides a separate group of 1D Gaussian functions. In a following layer pi-neurons are used to combine the 1D Gaussians to multidimensional RBFs. The output layer is linear. The learning algorithm follows the ideas introduced by the coarse-coding resource allocating network (Deco and Ebmeyer, 1993). Simulations using handwritten digits demonstrate the performance and advantages of this algorithm, which is optimal reduction of complexity.

Published in:

Neural Networks, 1993. IJCNN '93-Nagoya. Proceedings of 1993 International Joint Conference on  (Volume:3 )

Date of Conference:

25-29 Oct. 1993