Figure 1.

Results for a network of N = 16 FHN oscillators. (a) Coupling functions $\tilde{H}(\mathrm{\Delta }\theta )$ estimated by the present method (solid red line) and the adjoint method (dashed blue line). (b) Estimated natural frequencies (ordinate) {ω_i}¹⁶_i=1 of FHN oscillators versus those obtained from non-coupled simulation (abscissa). (c) Synchronization diagrams of the estimated model (solid red line) and the original coupled oscillators (dashed blue line). (d) Dependence of estimation error on the coupling strength C used to generate multivariate data. The estimation error e is defined as the deviation of the estimated coupling function from the one computed by the adjoint method. (e) Dependence of the estimation error on the transient time, after which the multivariate data were sampled. The coupling strength was set to C = 0.05. (f ) Dependence of the estimation error on the number of oscillators N. (Online version in colour.)