Attractor Modulation and Proliferation in 1+$\infty$ Dimensional Neural Networks

Details Attractor Modulation and Proliferation in 1+$\infty$ Dimensional Neural Networks Attractor Modulation and Proliferation in 1+$\infty$ Dimensional Neural Networks

2000-08-03

arxiv.org/abs/cond-mat/0008049v1

J. Phys. A, 34 (2001) 929

Physics

Condensed Matter

Disordered Systems and Neural Networks

16 pages, 15 postscript figures, Latex

Scientific paper

10.1088/0305-4470/34/5/301

We extend a recently introduced class of exactly solvable models for recurrent neural networks with competition between 1D nearest neighbour and infinite range information processing. We increase the potential for further frustration and competition in these models, as well as their biological relevance, by adding next-nearest neighbour couplings, and we allow for modulation of the attractors so that we can interpolate continuously between situations with different numbers of stored patterns. Our models are solved by combining mean field and random field techniques. They exhibit increasingly complex phase diagrams with novel phases, separated by multiple first- and second order transitions (dynamical and thermodynamic ones), and, upon modulating the attractor strengths, non-trivial scenarios of phase diagram deformation. Our predictions are in excellent agreement with numerical simulations.

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