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Evolution of controllability in interbank networks

Delpini, Danilo and Battiston, Stefano and Riccaboni, Massimo and Gabbi, Giampaolo and Pammolli, Fabio and Caldarelli, Guido Evolution of controllability in interbank networks. Scientific Reports, 3 (1626). pp. 1-5. ISSN 2045-2322 (2013)

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The Statistical Physics of Complex Networks has recently provided new theoretical tools for policy makers. Here we extend the notion of network controllability to detect the financial institutions, i.e. the drivers, that are most crucial to the functioning of an interbank market. The system we investigate is a paradigmatic case study for complex networks since it undergoes dramatic structural changes over time and links among nodes can be observed at several time scales. We find a scale-free decay of the fraction of drivers with increasing time resolution, implying that policies have to be adjusted to the time scales in order to be effective. Moreover, drivers are often not the most highly connected “hub” institutions, nor the largest lenders, contrary to the results of other studies. Our findings contribute quantitative indicators which can support regulators in developing more effective supervision and intervention policies.

Item Type: Article
Identification Number: 10.1038/srep01626
Projects: EC FET Open Project “FOC” No. 255987, PNR project CRISIS-Lab
Subjects: H Social Sciences > HA Statistics
H Social Sciences > HB Economic Theory
Q Science > QA Mathematics
Q Science > QC Physics
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 15 Apr 2013 13:48
Last Modified: 07 Apr 2016 09:38
URI: http://eprints.imtlucca.it/id/eprint/1543

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