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[Author] Masayuki SAWADA(1hit)

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  • Combining Local Representative Networks to Improve Learning in Complex Nonlinear Learning Systems

    Goutam CHAKRABORTY  Masayuki SAWADA  Shoichi NOGUCHI  

     
    LETTER

      Vol:
    E80-A No:9
      Page(s):
    1630-1633

    In fully connected Multilayer perceptron (MLP), all the hidden units are activated by samples from the whole input space. For complex problems, due to interference and cross coupling of hidden units' activations, the network needs many hidden units to represent the problem and the error surface becomes highly non-linear. Searching for the minimum is then complex and computationally expensive, and simple gradient descent algorithms usually fail. We propose a network, where the input space is partitioned into local sub-regions. Subsequently, a number of smaller networks are simultaneously trained by overlapping subsets of the input samples. Remarkable improvement of training efficiency as well as generalization performance of this combined network are observed through various simulations.

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