Abstract
In order to design complex networks that are robust and sustainable, we must
understand systemic risk. As economic systems become increasingly
interconnected, for example, a shock in a single financial network can provoke
cascading failures throughout the system. The widespread effects of the current
EU debt crisis and the 2008 world financial crisis occur because financial
systems are characterized by complex relations that allow a local crisis to
spread dramatically. We study US commercial bank balance sheet data and design
a bi-partite banking network composed of (i) banks and (ii) bank assets. We
propose a cascading failure model to simulate the crisis spreading process in a
bi-partite banking network. We test our model using 2007 data to analyze failed
banks. We find that, within realistic parameters, our model identifies a
significant portion of the actual failed banks from the FDIC failed bank
database from 2008 to 2011.
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