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Efficient Volterra systems identification using hierarchical genetic algorithms
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DOI：10.1016/j.asoc.2019.105745.png)
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Abstract
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The Volterra series consists of a powerful method for the identification of non-linear relationships. However, the identification of the series active basis sets requires intense research in order to reduce the computational burden of such a procedure. This is a result of a large number of measurements being required in order to produce an adequate estimate, due to overparameterization issues. In this work, we present a robust hierarchical evolutionary technique which employs a heuristic initialization and provides robustness against noise. The advanced solution is based on a genetic algorithm which improves on the computational complexity of existing methods without harming the identification accuracy. The impact of the parameters calibration is evaluated for different signal-to-noise levels and several nonlinear systems considered in the literature. (C) 2019 Published by Elsevier B.V.
Keywords:
Volterra series
System identification
Genetic algorithms
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