Retrieval Properties of Hopfield and Correlated Attractors in an Associative Memory Model

Details Retrieval Properties of Hopfield and Correlated Attractors in an Associative Memory Model Retrieval Properties of Hopfield and Correlated Attractors in an Associative Memory Model

2004-03-15

arxiv.org/abs/cond-mat/0403361v1

J. of Phys. Soc. Japan, Vol.73, No.4, 2004

Physics

Condensed Matter

Disordered Systems and Neural Networks

12 pages, 7 figures

Scientific paper

10.1143/JPSJ.73.867

We examine a previouly introduced attractor neural network model that explains the persistent activities of neurons in the anterior ventral temporal cortex of the brain. In this model, the coexistence of several attractors including correlated attractors was reported in the cases of finite and infinite loading. In this paper, by means of a statistical mechanical method, we study the statics and dynamics of the model in both finite and extensive loading, mainly focusing on the retrieval properties of the Hopfield and correlated attractors. In the extensive loading case, we derive the evolution equations by the dynamical replica theory. We found several characteristic temporal behaviours, both in the finite and extensive loading cases. The theoretical results were confirmed by numerical simulations.

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