Abstract
Solving time-varying equations is fundamental in science and engineering. This paper aims to find a fast-converging and high-precision method for solving time-varying equations. We combine two classes of feedback neural networks, i.e., gradient neural network (GNN) and Zhang neural network (ZNN), to construct a continuous gradient-Zhang neural network (GZNN) model. Our research shows that GZNN has the advantages of high convergence precision of ZNN and fast convergence speed of GNN in certain cases, i.e., all the eigenvalues of Jacobian matrix of the time-varying equations multiplied by its transpose are larger than 1. Furthermore, we conduct the different detailed mathematical proof and theoretical analysis to establish the stability and convergence of the GZNN model. Additionally, we discretize the GZNN model by utilizing time discretization formulas (i.e., Euler and Taylor-Zhang discretization formulas), to construct corresponding discrete GZNN algorithms for solving discrete time-varying problems. Different discretization formulas can construct discrete algorithms with varying precision. As the number of time sampling instants increases, the precision of discrete algorithms can be further improved. Furthermore, we improve the matrix inverse operation in the GZNN model and develop inverse-free GZNN algorithms to solve linear problems, effectively reducing their time complexity. Finally, numerical experiments are conducted to validate the feasibility of GZNN model and the corresponding discrete algorithms in solving time-varying equations, as well as the efficiency of the inverse-free method in solving linear equations.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Chan, P.K., Chen, D.Y.: A CMOS ISFET interface circuit with dynamic current temperature compensation technique. IEEE Trans. Circuits Syst. I Regul. Pap. 54(1), 119–129 (2007)
Guo, D., Zhang, Y.: Zhang neural network, Getz-Marsden dynamic system, and discrete-time algorithms for time-varying matrix inversion with application to robots’ kinematic control. Neurocomputing 97, 22–32 (2012)
Hassoun, M.H.: Fundamentals of Artificial Neural Networks. MIT Press, Cambridge (1995)
Hildebrand, F.B.: Introduction to Numerical Analysis. Courier Corporation, North Chelmsford (1987)
Jin, L., Li, S., Liao, B., Zhang, Z.: Zeroing neural networks: a survey. Neurocomputing 267, 597–604 (2017)
Jin, L., Zhang, Y., Li, S., Zhang, Y.: Modified ZNN for time-varying quadratic programming with inherent tolerance to noises and its application to kinematic redundancy resolution of robot manipulators. IEEE Trans. Ind. Electron. 63(11), 6978–6988 (2016)
Li, J., Wu, G., Li, C., Xiao, M., Zhang, Y.: GMDS-ZNN variants having errors proportional to sampling gap as compared with models 1 and 2 having higher precision. In: Proceedings of International Conference on Systems and Informatics, pp. 728–733 (2018)
Li, J., Zhang, Y., Mao, M.: Five-instant type discrete-time ZND solving discrete time-varying linear system, division and quadratic programming. Neurocomputing 331, 323–335 (2019)
Li, S., Li, Y.: Nonlinearly activated neural network for solving time-varying complex Sylvester equation. IEEE Trans. Cybern. 44(8), 1397–1407 (2014)
Liao, B., Zhang, Y.: Different complex ZFs leading to different complex ZNN models for time-varying complex generalized inverse matrices. IEEE Trans. Neural Netw. Learn. Syst. 25(9), 1621–1631 (2014)
Oppenheim, A.V., Willsky, A.S., Nawab, S.H., Ding, J.J.: Signals and Systems. Prentice Hall, New Jersey (1997)
Qiu, B., Guo, J., Li, X., Zhang, Z., Zhang, Y.: Discrete-time advanced zeroing neurodynamic algorithm applied to future equality-constrained nonlinear optimization with various noises. IEEE Trans. Cybern. 52(5), 3539–3552 (2022)
Sun, C., Ye, M., Hu, G.: Distributed time-varying quadratic optimization for multiple agents under undirected graphs. IEEE Trans. Autom. Control 62(7), 3687–3694 (2017)
Wu, D., Zhang, Y., Guo, J., Li, Z., Ming, L.: GMDS-ZNN model 3 and its ten-instant discrete algorithm for time-variant matrix inversion compared with other multiple-instant ones. IEEE Access 8, 228188–228198 (2020)
Yang, M., Zhang, Y., Hu, H.: Inverse-free DZNN models for solving time-dependent linear system via high-precision linear six-step method. IEEE Trans. Neural Netw. Learn. Syst. 1–12 (2022)
Yang, M., Zhang, Y., Zhang, Z., Hu, H.: Adaptive discrete ZND models for tracking control of redundant manipulator. IEEE Trans. Ind. Inf. 16(12), 7360–7368 (2020)
Yu, H., Sung, Y.: Least squares approach to joint beam design for interference alignment in multiuser multi-input multi-output interference channels. IEEE Trans. Signal Process. 58(9), 4960–4966 (2010)
Zhang, Y.: Analysis and design of recurrent neural networks and their applications to control and robotic systems. The Chinese University of Hong Kong (2003)
Zhang, Y., Ge, S.: Design and analysis of a general recurrent neural network model for time-varying matrix inversion. IEEE Trans. Neural Netw. 16(6), 1477–1490 (2005)
Zhang, Y., Gong, H., Yang, M., Li, J., Yang, X.: Stepsize range and optimal value for Taylor-Zhang discretization formula applied to zeroing neurodynamics illustrated via future equality-constrained quadratic programming. IEEE Trans. Neural Netw. Learn. Syst. 30(3), 959–966 (2019)
Zhang, Y., Li, Z.: Zhang neural network for online solution of time-varying convex quadratic program subject to time-varying linear-equality constraints. Phys. Lett. A 373(18), 1639–1643 (2009)
Zhang, Y., Ling, Y., Yang, M., Yang, S., Zhang, Z.: Inverse-free discrete ZNN models solving for future matrix pseudoinverse via combination of extrapolation and ZeaD formulas. IEEE Trans. Neural Netw. Learn. Syst. 32(6), 2663–2675 (2021)
Zhang, Y., Wang, C.: Gradient-Zhang neural network solving linear time-varying equations. In: Proceedings of IEEE Conference on Industrial Electronics and Applications, pp. 396–403 (2022)
Zhang, Y., Wang, J., Xia, Y.: A dual neural network for redundancy resolution of kinematically redundant manipulators subject to joint limits and joint velocity limits. IEEE Trans. Neural Netw. 14(3), 658–667 (2003)
Zhang, Y., Wu, G., Qiu, B., Li, W., He, P.: Euler-discretized GZ-type complex neuronet computing real-time varying complex matrix inverse. In: Proceedings of Chinese Control Conference, pp. 3914–3919 (2017)
Zhang, Y., Xie, Y., Tan, H.: Time-varying Moore-Penrose inverse solving shows different Zhang functions leading to different ZNN models. In: Proceedings of Advances in Neural Networks - ISNN 2012, pp. 98–105 (2012)
Zhang, Y., Yi, C., Guo, D., Zheng, J.: Comparison on Zhang neural dynamics and gradient-based neural dynamics for online solution of nonlinear time-varying equation. Neural Comput. Appl. 20, 1–7 (2011)
Zhang, Y., Yi, C., Ma, W.: Comparison on gradient-based neural dynamics and Zhang neural dynamics for online solution of nonlinear equations. In: Proceedings of International Symposium on Advances in Computation and Intelligence, pp. 269–279 (2008)
Acknowledgements
This work is aided by the National Natural Science Foundation of China (with number 61976230), the Project Supported by Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (with number 2018), and the Key-Area Research and Development Program of Guangzhou (with number 202007030004), with corresponding author Yunong Zhang.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Wang, C., Zhang, Y. (2024). Theoretical Analysis of Gradient-Zhang Neural Network for Time-Varying Equations and Improved Method for Linear Equations. In: Luo, B., Cheng, L., Wu, ZG., Li, H., Li, C. (eds) Neural Information Processing. ICONIP 2023. Lecture Notes in Computer Science, vol 14447. Springer, Singapore. https://doi.org/10.1007/978-981-99-8079-6_22
Download citation
DOI: https://doi.org/10.1007/978-981-99-8079-6_22
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-8078-9
Online ISBN: 978-981-99-8079-6
eBook Packages: Computer ScienceComputer Science (R0)