Figure 2
From: Echo State Networks with Self-Normalizing Activations on the Hyper-Sphere
Example of the behavior of the proposed model in a 2-dimensional scenario. The blue lines represent the linear update step of Eq. (2a), while the dashed lines denote the projection of Eq. (2b). The red lines represent the actual steps performed by the system. Note that condition (3) accounts for the fact that the linear step must never bring the system state inside the hyper-sphere.
