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arXiv 1203.2899math.STstat.TH
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灵敏度指标的有效估计

Efficient Estimation of Sensitivity Indices

Sébastien Da Veiga, Fabrice Gamboa

摘要:

本文讨论Sobol敏感性指标的有效估计问题。首先,我们专注于一般功能积分的条件矩的形式$\E(ψ(\E(φ(Y)|X)))$其中$(X,Y)$是一个随机向量的联合密度$f$和$ψ$和$φ$是可微的功能,是足够的。特别是,我们证明了这个功能的渐近有效估计归结为交叉二次泛函的估计。一阶灵敏度指标的有效估计,然后作为一种特殊情况下推导。我们研究了它的几个解析函数的性质,并说明了它的兴趣油藏工程的情况下。

英文摘要:

In this paper we address the problem of efficient estimation of Sobol sensitivy indices. First, we focus on general functional integrals of conditional moments of the form $\E(ψ(\E(φ(Y)|X)))$ where $(X,Y)$ is a random vector with joint density $f$ and $ψ$ and $φ$ are functions that are differentiable enough. In particular, we show that asymptotical efficient estimation of this functional boils down to the estimation of crossed quadratic functionals. An efficient estimate of first-order sensitivity indices is then derived as a special case. We investigate its properties on several analytical functions and illustrate its interest on a reservoir engineering case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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