Figure 6. Comparison of model robustness.

The robustness of the one-loop and two-loop Arabidopsis circadian clock models is compared through their best-fitting parameter set (L0 for two-loop and L26 for one-loop). The degree of robustness (DOR) of all parameters in both models at (a) 1/6 times perturbation, and (b) 6 times perturbation is plotted against the perturbed costs. The DOR of the most sensitive parameter in both models, as pointed out by the arrow in (b), was selected to plot across its full perturbation range in (c).