Thresholds in layered neural networks with variable activity

Details Thresholds in layered neural networks with variable activity Thresholds in layered neural networks with variable activity

1999-09-30

arxiv.org/abs/cond-mat/9909443v1

J. Phys. A 33, 2597-2609 (2000).

Physics

Condensed Matter

Disordered Systems and Neural Networks

15 pages, Latex2e, 6 eps figures

Scientific paper

10.1088/0305-4470/33/14/301

The inclusion of a threshold in the dynamics of layered neural networks with variable activity is studied at arbitrary temperature. In particular, the effects on the retrieval quality of a self-controlled threshold obtained by forcing the neural activity to stay equal to the activity of the stored paterns during the whole retrieval process, are compared with those of a threshold chosen externally for every loading and every temperature through optimisation of the mutual information content of the network. Numerical results, mostly concerning low activity networks are discussed.

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