  Operation of the array of coupled oscillators underlying the associative
memory function is demonstrated for various interconnection schemes
(cross-connect, star phase keying and star frequency keying) and various
physical implementation of oscillators (van der Pol, phase-locked loop, spin
torque). The speed of synchronization of oscillators and the evolution of the
degree of matching is studied as a function of device parameters. The
dependence of errors in association on the number of the memorized patterns and
the distance between the test and the memorized pattern is determined for Palm,
Furber and Hopfield association algorithms.
