Efficient simulations for the exponential integrals of Hölder continuous gaussian random fields
Efficient simulations for the exponential integrals of Hölder continuous gaussian random fields
复制标题
Hölder 连续高斯随机场指数积分的高效模拟
DOI:
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发表时间:
2014
影响因子:
0.9
通讯作者:
Gongjun Xu
中科院分区:
文献类型:
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作者:
Jingcheng Liu;Gongjun Xu
In this article, we consider a Gaussian random field f(t) living on a compact set T⊂ Rd and the computation of the tail probabilities P(∫Tef(t)dt > eb) as b → ∞. We design asymptotically efficient importance sampling estimators for a general class of Hölder continuous Gaussian random fields. In addition to the variance control, we also analyze the bias (relative to the interesting tail probabilities) caused by the discretization.