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[Keyword] generalized learning(2hit)

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  • Feature Transformation with Generalized Learning Vector Quantization for Hand-Written Chinese Character Recognition

    Mu-King TSAY  Keh-Hwa SHYU  Pao-Chung CHANG  

     
    PAPER-Image Processing,Computer Graphics and Pattern Recognition

      Vol:
    E82-D No:3
      Page(s):
    687-692

    In this paper, the generalized learning vector quantization (GLVQ) algorithm is applied to design a hand-written Chinese character recognition system. The system proposed herein consists of two modules, feature transformation and recognizer. The feature transformation module is designed to extract discriminative features to enhance the recognition performance. The initial feature transformation matrix is obtained by using Fisher's linear discriminant (FLD) function. A template matching with minimum distance criterion recognizer is used and each character is represented by one reference template. These reference templates and the elements of the feature transformation matrix are trained by using the generalized learning vector quantization algorithm. In the experiments, 540100 (5401 100) hand-written Chinese character samples are used to build the recognition system and the other 540100 (5401 100) samples are used to do the open test. A good performance of 92.18 % accuracy is achieved by proposed system.

  • A Modified Information Criterion for Automatic Model and Parameter Selection in Neural Network Learning

    Sumio WATANABE  

     
    PAPER-Bio-Cybernetics and Neurocomputing

      Vol:
    E78-D No:4
      Page(s):
    490-499

    This paper proposes a practical training algorithm for artificial neural networks, by which both the optimally pruned model and the optimally trained parameter for the minimum prediction error can be found simultaneously. In the proposed algorithm, the conventional information criterion is modified into a differentiable function of weight parameters, and then it is minimized while being controlled back to the conventional form. Since this method has several theoretical problems, its effectiveness is examined by computer simulations and by an application to practical ultrasonic image reconstruction.