Causal analysis of extreme risk in a network of industry portfolios
Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Klüppelberg, Claudia; Krali, Mario
Abstract:
We present a methodology for causal risk analysis in a network. Causal dependence is formulated by a max-linear structural equation model, which expresses each node variable as a max-linear function of its parental node variables in a directed acyclic graph and some exogenous innovation. We determine directed paths responsible for extreme risk propagation in the network. We give algorithms for structure learning and parameter estimation and Résumé apply them to a network of financial data.