Adaptive importance sampling for extreme quantile estimation with stochastic black box computer models
Adaptive importance sampling for extreme quantile estimation with stochastic black box computer models
复制标题
使用随机黑盒计算机模型进行极端分位数估计的自适应重要性采样
DOI:
10.1002/nav.21938
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Lam, Henry
中科院分区:
文献类型:
--
作者:
Pan, Qiyun;Byon, Eunshin;Ko, Young Myoung;Lam, Henry
Quantile is an important quantity in reliability analysis, as it is related to the resistance level for defining failure events. This study develops a computationally efficient sampling method for estimating extreme quantiles using stochastic black box computer models. Importance sampling has been widely employed as a powerful variance reduction technique to reduce estimation uncertainty and improve computational efficiency in many reliability studies. However, when applied to quantile estimation, importance sampling faces challenges, because a good choice of the importance sampling density relies on information about the unknown quantile. We propose an adaptive method that refines the importance sampling density parameter toward the unknown target quantile value along the iterations. The proposed adaptive scheme allows us to use the simulation outcomes obtained in previous iterations for steering the simulation process to focus on important input areas. We prove some convergence properties of the proposed method and show that our approach can achieve variance reduction over crude Monte Carlo sampling. We demonstrate its estimation efficiency through numerical examples and wind turbine case study.
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DOI:
10.1109/wsc.2012.6465096
发表时间:
2012-12
期刊:
Proceedings Title: Proceedings of the 2012 Winter Simulation Conference (WSC)
影响因子:
--
作者:
X. Chen;B. Nelson;K. Kim
通讯作者:
X. Chen;B. Nelson;K. Kim
影响因子:
0.8
作者:
M. Kohler;A. Krzyżak;Harro Walk
通讯作者:
M. Kohler;A. Krzyżak;Harro Walk
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Daniel Egloff;Markus Leippold
通讯作者:
Markus Leippold
影响因子:
5.4
作者:
Broadie, Mark;Du, Yiping;Moallemi, Ciamac C.
通讯作者:
Moallemi, Ciamac C.
影响因子:
0.9
作者:
Choe, Youngjun;Lam, Henry;Byon, Eunshin
通讯作者:
Byon, Eunshin