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Parallel dynamics of fully connected Q-Ising neural networks | | D. Bollé
; G. Jongen
; G.M. Shim
; | | Date: |
10 Apr 1997 | | Journal: | J.Stat.Phys. 91 (1998), 125-154 | | Subject: | Disordered Systems and Neural Networks | cond-mat.dis-nn | | Affiliation: | Instituut voor Theoretische Fysica , K.U. Leuven, Belgium, Department of Physics, Chungnam National University, R.O. Korea | | Abstract: | Using a probabilistic approach we study the parallel dynamics of fully connected Q-Ising neural networks for arbitrary Q. A Lyapunov function is shown to exist at zero temperature. A recursive scheme is set up to determine the time evolution of the order parameters through the evolution of the distribution of the local field. As an illustrative example, an explicit analysis is carried out for the first three time steps. For the case of the Q=3 model these theoretical results are compared with extensive numerical simulations. Finally, equilibrium fixed-point equations are derived and compared with the thermodynamic approach based upon the replica-symmetric mean-field approximation. | | Source: | arXiv, cond-mat/9704089 | | Services: | Forum | Review | PDF | Favorites | |
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