Stable Learning Algorithm of Global Neural Network for Identification of Dynamic Complex Systems

Authors:
Jarosław Drapała;Jerzy Świątek;Krzysztof Brzostowski
Affiliations:
Institute of Information Science and Engineering, Wrocław University of Technology, Wrocław, Poland 50-370;Institute of Information Science and Engineering, Wrocław University of Technology, Wrocław, Poland 50-370;Institute of Information Science and Engineering, Wrocław University of Technology, Wrocław, Poland 50-370
Venue:
ICAISC '08 Proceedings of the 9th international conference on Artificial Intelligence and Soft Computing
Year:
2006

Citing 3
Cited 0

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Nonlinear system identification using discrete-time recurrent neural networks with stable learning algorithms

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IEEE Transactions on Neural Networks

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Abstract

Novel convergence properties of identification algorithm for complex input-output systems, which uses recurrent neural networks, are derived. By the term "complex system" we understand a system containing interconnected sub processes (elementary processes), which can operate separately. Each element of the complex system is modeled by a multi-input, multi-output neural network. A model of the whole system is obtained by composing all neural networks into one global network. Stable learning algorithm of such a neural network is proposed. We derived sufficient condition of stability using the second Lyapunov method and proved that algorithm is stable even if stability conditions for some individual neural networks are not satisfied.