The Augmented Models of Associative Memory Asymmetric Interaction and Hierarchy of Patterns - Int. J. Mod. Phys. B1, 51 (1987)

The asymmetric modification of the Hopfield model of the associative memory is considered. It is shown that the asymmetry does not change the main properties of the model, but leads to the internal nonthermal noise. The modification of the Hopfield algorithm is proposed which can be used for storing the correlated patterns and its storage capacity is estimated. The hierarchical memory model is proposed and studied.