Fig. 3.
Inference on natural flocks. For each of the 14 flocking events, the parameters of the model were inferred using either the dynamical inference method presented here, with dt = 0.2 s, or an equilibrium inference method as in [13]. A. Both methods agree well on the predicted value of the alignment range nc. B. While the dynamical method infers the alignment strength J and the noise amplitude T separately, the equilibrium method only infers their ratio J/T, the value of which is consistent between the two methods. Error bars represent standard errors over time frames.