Variance-based sensitivity analysis for time-dependent processes
Variance-based sensitivity analysis for time-dependent processes
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DOI:
10.1016/j.ress.2019.106722
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发表时间:
2020-04-01
影响因子:
8.1
通讯作者:
Smith, Ralph C.
中科院分区:
文献类型:
--
作者:
Alexanderian, Alen;Gremaud, Pierre A.;Smith, Ralph C.
The global sensitivity analysis of time-dependent processes requires history-aware approaches. We develop for that purpose a variance-based method that leverages the correlation structure of the problems under study and employs surrogate models to accelerate the computations. The errors resulting from fixing unimportant uncertain parameters to their nominal values are analyzed through a priori estimates. We illustrate our approach on a harmonic oscillator example and on a nonlinear dynamic cholera model.