The Blume-Emery-Griffiths neural network: dynamics for arbitrary temperature

Details The Blume-Emery-Griffiths neural network: dynamics for arbitrary temperature The Blume-Emery-Griffiths neural network: dynamics for arbitrary temperature

2003-04-24

arxiv.org/abs/cond-mat/0304553v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

26 pages in Latex, 8 eps figures

Scientific paper

10.1016/S0378-4371(03)00629-0

The parallel dynamics of the fully connected Blume-Emery-Griffiths neural network model is studied for arbitrary temperature. By employing a probabilistic signal-to-noise approach, a recursive scheme is found determining the time evolution of the distribution of the local fields and, hence, the evolution of the order parameters. A comparison of this approach is made with the generating functional method, allowing to calculate any physical relevant quantity as a function of time. Explicit analytic formula are given in both methods for the first few time steps of the dynamics. Up to the third time step the results are identical. Some arguments are presented why beyond the third time step the results differ for certain values of the model parameters. Furthermore, fixed-point equations are derived in the stationary limit. Numerical simulations confirm our theoretical findings.

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