Mutual Information of Three-State Low Activity Diluted Neural Networks with Self-Control

Details Mutual Information of Three-State Low Activity Diluted Neural Networks with Self-Control Mutual Information of Three-State Low Activity Diluted Neural Networks with Self-Control

1998-06-05

arxiv.org/abs/cond-mat/9806078v2

Neural Networks 13, 455-462 (2000)

Physics

Condensed Matter

Statistical Mechanics

Change of title and small corrections (16 pages and 6 figures)

Scientific paper

The influence of a macroscopic time-dependent threshold on the retrieval process of three-state extremely diluted neural networks is examined. If the threshold is chosen appropriately in function of the noise and the pattern activity of the network, adapting itself in the course of the time evolution, it guarantees an autonomous functioning of the network. It is found that this self-control mechanism considerably improves the retrieval quality, especially in the limit of low activity, including the storage capacity, the basins of attraction and the information content. The mutual information is shown to be the relevant parameter to study the retrieval quality of such low activity models. Numerical results confirm these observations.

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