Figure 1: Categories of driver nodes in a complex network.
From: Emergence of bimodality in controlling complex networks
(a) A network with five nodes that can be control via three driver nodes (ND=3). The system is characterized by three distinct MDSs. (b) Node 1 is critical as it is part of all MDSs shown in a, node 2 is redundant as it does not participate in any MDS and nodes 3, 4, 5 are intermittent, participating in some but not all MDSs.
