This paper is devoted to the problem of stabilizing a Hopfield-type neural network with bi-directional ring architecture and two delays. The delay-independent and delay-dependent stability conditions are explicitly presented by the method of the characteristic roots and the skill of mathematical analysis. Moreover, if a link between the adjacent two neurons is cut, the ring neural network turns to a linear one, and the stability results are also established. Furthermore, a comparative analysis for the ring and linear network shows that the stability domain is enlarged after the breaking.
References
[1]
Hopfield, J.J. (1984) Neurons with Graded Response Have Collective Computational Properties like Those of Two-State Neurons. Proceedings of the National Academy of Sciences of the United States of America, 81, 3088-3092. https://doi.org/10.1073/pnas.81.10.3088
[2]
Bélair, J. (1993) Stability in a Model of a Delayed Neural Network. Journal of Dynamics and Differential Equations, 5, 607-623. https://doi.org/10.1007/BF01049141
[3]
Wu, J. (1998) Symmetric Functional Differential Equations and Neural Networks with Memory. Transactions of the American Mathematical Society, 350, 4799-4838. https://doi.org/10.1090/S0002-9947-98-02083-2
[4]
Campbell, S.A., Edwards, R. and van den Driessche, P. (2004) Delayed Coupling between Two Neural Networks Loops. SIAM Journal on Applied Mathematics, 65, 316-335. https://doi.org/10.1137/S0036139903434833
[5]
Su, R. and Zhang, C. (2019) Stability and Hopf Bifurcation Periodic Orbits in Delay Coupled Lotka-Volterra Ring System. Open Mathematics, 17, 962-978. https://doi.org/10.1515/math-2019-0074
[6]
Faydasicok, O. (2020) New Criteria for Global Stability of Neutral-Type Cohen? CGrossberg Neural Networks with Multiple Delays. Neural Networks, 125, 330-337. https://doi.org/10.1016/j.neunet.2020.02.020
[7]
Yan, X.P. (2006) Hopf Bifurcation and Stability for a Delayed Tri-Neuron Network Model. Journal of Computational & Applied Mathematics, 196, 579-595. https://doi.org/10.1016/j.cam.2005.10.012
[8]
Yuan, Y. and Campbell, S.A. (2004) Stability and Synchronization of a Ring of Identical Cells with Delayed Coupling: Dedicated to Shui-Nee Chow on the Occasion of His 60th Birthday. Journal of Dynamics and Differential Equations, 16, 709-744. https://doi.org/10.1007/s10884-004-6114-y
[9]
Hu, H. and Huang, L. (2009) Stability and Hopf Bifurcation Analysis on a Ring of Four Neurons with Delays. Applied Mathematics & Computation, 213, 587-599. https://doi.org/10.1016/j.amc.2009.03.052
[10]
Xu, X. (2008) Complicated Dynamics of a Ring Neural Network with Time Delays. Journal of Physics A: Mathematical and Theoretical, 41, 035102. https://doi.org/10.1088/1751-8113/41/3/035102
[11]
Kaslik, E. and Balint, S. (2009) Complex and Chaotic Dynamics in a Discrete-Time-Delayed Hopfield Neural Network with Ring Architecture. Neural Networks, 22, 1411-1418. https://doi.org/10.1016/j.neunet.2009.03.009
[12]
Marchesi, M., Orlandi, G., Piazza, F. and Unchini, A. (1992) Linear Data-Driven Architectures Implementing Neural Network Models. International Journal of Neural Networks, 3, 101-120.
[13]
Khokhlova, T.N. and Kipnis, M.M. (2013) The Breaking of a Delayed Ring Neural Network Contributes to Stability: The Rule and Exceptions. Neural Networks, 48, 148-152. https://doi.org/10.1016/j.neunet.2013.08.001
[14]
Ivanov, S., Kipnis, M. and Medina, R. (2014) On the Stability of the Cartesian Product of a Neural Ring and an Arbitrary Neural Network. Advances in Difference Equations, 1, 176. https://doi.org/10.1186/1687-1847-2014-176