Reconstructing Mesoscale Network Structures

Figure 4

Evolution of the DIN bow-tie structure (the SCC is shown in gray, the IN-component is shown in blue, and the OUT-component is shown in green). The crisis period (last four points) is signalled by a sharp decrease of the SCC and IN-components size (and a corresponding increase of the OUT-component size). The size of the SCC, however, starts shrinking in 2004Q1 (deviating from the approximately constant trend observed since 1998Q1), seemingly constituting an additional, early-warning signal of the upcoming crisis. On the other hand, the DIN core (shown in orange) does not undergo any significant variation throughout the whole temporal interval.