Figure 2
From: Emergence of disconnected clusters in heterogeneous complex systems

Illustration of the SDRG method. Two types of reduction steps of the SDRG procedure: formation of a cluster (a) and elimination of a site (b). The thickness of lines indicates the magnitude of the infection rate on the corresponding link. The link (a) and the site (b) to be decimated is shaded in green. For details, see the text.