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arXiv 2104.12938math.STstat.TH
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相依模型与相依广义灵敏度指标

On dependency models and dependent generalized sensitivity indices

Matieyendou Lamboni

摘要:

在本文中,我们推导出基于Copula和经验依赖模型(DM)模拟非自变量,然后提出了一种新的方法来确定的分布的模型输出的条件下的每个子集的输入。我们的方法依赖于使用DM的模型输出的等效表示,并提供了一种算法,用于选择表示,这是必要的和足够的模型输出的分布给定的每个子集的输入。在灵敏度分析中,选定的表示允许评估每个输入子集的主要、总体和相互作用效应。然后,我们引入了一阶和总指数的每个子集的输入与前一个指数小于后者。这些指数的一致估计,包括其渐近分布。分析和数值计算结果提供了使用单变量和多变量响应模型。

英文摘要:

In this paper, we derive copula-based and empirical dependency models (DMs) for simulating non-independent variables, and then propose a new way for determining the distribution of the model outputs conditional on every subset of inputs. Our approach relies on equivalent representations of the model outputs using DMs, and an algorithm is provided for selecting the representations that are necessary and sufficient for deriving the distribution of the model outputs given each subset of inputs. In sensitivity analysis, the selected representations allow for assessing the main, total and interactions effects of each subset of inputs. We then introduce the first-order and total indices of every subset of inputs with the former index less than the latter. Consistent estimators of such indices are provided, including their asymptotic distributions. Analytical and numerical results are provided using single and multivariate response models.

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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