Figure 3: The benefit of noise in controlling the T-cell network.
From: A geometrical approach to control and controllability of nonlinear dynamical networks

(a) Success rate to control the T-cell network from the cancerous state C1 to the normal state N using a combination of parameter perturbation and external noise (of amplitude) σ, where Δd≡μn−μc is the parameter deficiency. Warm colours indicate higher probability values of successful control. The perturbation duration is
. The results are averaged over 1,000 realizations. (b) A three-dimensional plot: success rate versus Δd and σ.