Parisi Phase in a Neuron

Details Parisi Phase in a Neuron Parisi Phase in a Neuron

1997-08-23

arxiv.org/abs/cond-mat/9708188v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages in prl twocolumn format + 3 Postscript figures. Submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.79.2746

Pattern storage by a single neuron is revisited. Generalizing Parisi's framework for spin glasses we obtain a variational free energy functional for the neuron. The solution is demonstrated at high temperature and large relative number of examples, where several phases are identified by thermodynamical stability analysis, two of them exhibiting spontaneous full replica symmetry breaking. We give analytically the curved segments of the order parameter function and in representative cases compute the free energy, the storage error, and the entropy.

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