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Chih-Wen Shih
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Journal Articles
Publisher: Journals Gateway
Neural Computation (2009) 21 (3): 719–740.
Published: 01 March 2009
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We investigate the complete stability for multistable delayed neural networks. A new formulation modified from the previous studies on multistable networks is developed to derive componentwise dynamical property. An iteration argument is then constructed to conclude that every solution of the network converges to a single equilibrium as time tends to infinity. The existence of 3 n equilibria and 2 n positively invariant sets for the n -neuron system remains valid under the new formulation. The theory is demonstrated by a numerical illustration.
Journal Articles
Publisher: Journals Gateway
Neural Computation (2007) 19 (12): 3392–3420.
Published: 01 December 2007
Abstract
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A general methodology that involves geometric configuration of the network structure for studying multistability and multiperiodicity is developed. We consider a general class of nonautonomous neural networks with delays and various activation functions. A geometrical formulation that leads to a decomposition of the phase space into invariant regions is employed. We further derive criteria under which the n -neuron network admits 2 n exponentially stable sets. In addition, we establish the existence of 2 n exponentially stable almost periodic solutions for the system, when the connection strengths, time lags, and external bias are almost periodic functions of time, through applying the contraction mapping principle. Finally, three numerical simulations are presented to illustrate our theory.
Includes: Supplementary data