Abstract：
:Most risk analysis models systematically underestimate the probability and impact of catastrophic events (e.g., economic crises, natural disasters, and terrorism) by not taking into account interconnectivity and interdependence of risks. To address this weakness, we propose the Cascading Alternating Renewal Process (CARP) to forecast interconnected global risks. However, assessments of the model's prediction precision are limited by lack of sufficient ground truth data. Here, we establish prediction precision as a function of input data size by using alternative long ground truth data generated by simulations of the CARP model with known parameters. We illustrate the approach on a model of fires in artificial cities assembled from basic city blocks with diverse housing. The results confirm that parameter recovery variance exhibits power law decay as a function of the length of available ground truth data. Using CARP, we also demonstrate estimation using a disparate dataset that also has dependencies: real-world prediction precision for the global risk model based on the World Economic Forum Global Risk Report. We conclude that the CARP model is an efficient method for predicting catastrophic cascading events with potential applications to emerging local and global interconnected risks.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Lin X,Moussawi A,Korniss G,Bakdash JZ,Szymanski BKdoi
10.1038/s41598-017-06873-xsubject
Has Abstractpub_date
2017-07-27 00:00:00pages
6699issue
1issn
2045-2322pii
10.1038/s41598-017-06873-xjournal_volume
7pub_type
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