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- W2941431120 abstract "Abstract How big is the risk that a few initial failures of networked nodes amplify to large cascades that endanger the functioning of the system? Common answers refer to the average final cascade size. Two analytic approaches allow its computation: (a) (heterogeneous) mean field approximation and (b) belief propagation. The former applies to (infinitely) large locally tree-like networks, while the latter is exact on finite trees. Yet, cascade sizes can have broad and multi-modal distributions that are not well represented by their average. Full distribution information is essential to identify likely events and to estimate the tail risk, i.e. the probability of extreme events. We therefore present an efficient message passing algorithm that calculates the cascade size distribution in finite networks. It is exact on finite trees and for a large class of cascade processes. An approximate version applies to any network structure and performs well on locally tree-like networks, as we show with several examples." @default.
- W2941431120 created "2019-05-03" @default.
- W2941431120 creator A5076324337 @default.
- W2941431120 date "2019-04-25" @default.
- W2941431120 modified "2023-09-25" @default.
- W2941431120 title "Efficient message passing for cascade size distributions" @default.
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- W2941431120 doi "https://doi.org/10.1038/s41598-019-42873-9" @default.
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