Parallel dynamics of the asymmetric extremely diluted Ashkin-Teller neural network

摘要

The parallel dynamics of the asymmetric extremely diluted Ashkin-Tellerneural network is studied using signal-to-noise analysis techniques. Evolutionequations for the order parameters are derived, both at zero and finitetemperature. The retrieval properties of the network are discussed in terms ofthe four-spin coupling strength and the temperature. It is shown that thepresence of a four-spin coupling enhances the retrieval quality.