Title
Convergent Dynamics of Nonreciprocal Differential Variational Inequalities Modeling Neural Networks
Abstract
The paper addresses convergence of solutions for a class of differential inclusions termed differential variational inequalities (DVIs). Each DVI describes the dynamics of a neural network (NN) evolving in a closed hypercube of BBR n and defined by a continuously differentiable, cooperative and (possibly) nonreciprocal vector field f. The main result in the paper is that under a new condition on f, which is called strong Kamke-Müller (SKM) condition, the solution semiflow generated by the DVI is strongly order preserving (SOP) and hence it satisfies a Limit Set Dichotomy and enjoys generic convergence properties. A characterization of the SKM condition is given in terms of the interconnection properties of the Jacobian matrix of f. In the case where f is an affine, or a linear, vector field the considered DVIs include two relevant classes of NNs, namely, the linear systems operating on a closed hypercube, also known as linear systems in saturated mode (LSSMs), and the full-range (FR) model of cellular neural networks (CNNs). By applying the results to LSSMs it is obtained that any cooperative LSSM with a (possibly) nonsymmetric and fully interconnected matrix is generically convergent. Analogous results hold for FRCNNs. All the obtained convergence results hold in the general case where the DVIs, and the LSSMs and FRCNNs, possess multiple equilibrium points.
Year
DOI
Venue
2013
10.1109/TCSI.2013.2265959
Circuits and Systems I: Regular Papers, IEEE Transactions
Keywords
Field
DocType
Jacobian matrices,cellular neural nets,linear systems,DVI,FR,FRCNN,Jacobian matrix,LSSM,SKM condition,SOP,cellular neural networks,convergent dynamics,differential inclusions,full-range model,generic convergence properties,interconnection properties,limit set dichotomy,linear systems in saturated mode,nonreciprocal differential variational inequalities,nonreciprocal vector field,strong Kamke-Müller condition,strongly order preserving,Convergence,Kamke-Müller condition,cooperative dynamical systems,differential variational inequalities,limit set dichotomy,neural networks
Differential inclusion,Jacobian matrix and determinant,Linear system,Control theory,Matrix (mathematics),Equilibrium point,Cellular neural network,Mathematics,Hypercube,Variational inequality
Journal
Volume
Issue
ISSN
60
12
1549-8328
Citations 
PageRank 
References 
7
0.46
19
Authors
4
Name
Order
Citations
PageRank
Di Marco, M.1597.20
Mauro Forti239836.80
Massimo Grazzini313111.01
Luca Pancioni420717.58