Fig. 2
From: Pre-emptive spectral graph protection strategies on multiplex social networks
Schematic Illustration of Finding Centers and Bridges in Graph. The red dots represent the protected nodes. Shaded lines represent the removed edges. a Initial Input Graph. b Protecting the Bridges, nodes with highest value of Random Walk Normalized Fiedler Vector (μ). c Protecting the Centers, nodes with highest value of Degree Centrality (d). d Combining (b) and (c) objectives in MultiplexShield