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Neural Processing Letters

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05-11-2020

A New Varying-Parameter Design Formula for Solving Time-Varying Problems

Authors: Predrag S. Stanimirović, Vasilios N. Katsikis, Dimitrios Gerontitis

Published in: Neural Processing Letters | Issue 1/2021

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Abstract

A novel finite-time convergent zeroing neural network (ZNN) based on varying gain parameter for solving time-varying (TV) problems is presented. The model is based on the improvement and generalization of the finite-time ZNN (FTZNN) dynamics by means of the varying-parameter ZNN (VPZNN) dynamics, and termed as VPFTZNN. More precisely, the proposed model replaces fixed and large values of the scaling parameter by an appropriate time-dependent gain parameter, which leads to a faster and bounded convergence of the error function in comparison to previous ZNN methods. The convergence properties of the proposed VPFTZNN dynamical evolution in its generic form is verified. Particularly, VPFTZNN for solving linear matrix equations and for computing generalized inverses are investigated theoretically and numerically. Moreover, the proposed design is applicable in solving the TV matrix inversion problem, solving the Lyapunov and Sylvester equation as well as in approximating the matrix square root. Theoretical analysis as well as simulation results validate the effectiveness of the introduced dynamical evolution. The main advantages of the proposed VPFTZNN dynamics are their generality and faster finite-time convergence with respect to FTZNN models.

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Title: A New Varying-Parameter Design Formula for Solving Time-Varying Problems
Authors: Predrag S. Stanimirović
Vasilios N. Katsikis
Dimitrios Gerontitis
Publication date: 05-11-2020
Publisher: Springer US
Published in: Neural Processing Letters / Issue 1/2021
Print ISSN: 1370-4621
Electronic ISSN: 1573-773X
DOI: https://doi.org/10.1007/s11063-020-10386-6

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