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Approximating the Stability Region of a Neural Network with a General Distribution of Delays

By R. Jessop A and S. A. Campbell B

Abstract

We investigate the linear stability of a neural network with distributed delay, where the neurons are identical. We examine the stability of a symmetrical equilibrium point via the analysis of the characteristic equation both when the connection matrix is symmetric and when it is not. We determine a mean delay and distribution independent stability region. We then illustrate a way of improving on this conservative result by approximating the true region of stability when the actual distribution is not known, but some moments or cumulants of the distribution are. Finally, we compare the approximate stability regions with the stability regions in the case of the uniform and gamma distributions. We show that the approximations improve as more moments or cumulants are used, and that the approximations using cumulants give better results than the ones using moments

Topics: n∑
Year: 2010
DOI identifier: 10.1016/j.neunet.2010.06.009
OAI identifier: oai:CiteSeerX.psu:10.1.1.178.668
Provided by: CiteSeerX
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