Controllability and Optimization of Complex Networks Based on Bridges

Figure 1

An example of the process of removing bridge. Bridges are shown in red, nonbridge edges are shown in black. The value next to the red edge represents the number of dropped nodes from the connected component due to removal of this edge. (a) A initial network. (b) The network after the first removal of bridge. (c) The network after the second removal of bridge. (d) The network after removal of all bridges.