Improved Retrieval in Neural Networks with External Fields
Andreas Engel, Harald Englisch, Anne R. Schutte · Europhysics Letters (EPL) · 1989
The retrieval properties of a Hopfield model of associative memory as a function of external fields correlated with the input pattern are studied. We show by analytical calculations within replica symmetric theory and by numerical simulations that the system successfully retrieves information even if the number of stored patterns exceeds the critical value of the pure Hopfield model.