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arXiv 1908.05357stat.MLcs.LG
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估计极值概率或分位数的序贯计算机试验设计

Sequential Computer Experimental Design for Estimating an Extreme Probability or Quantile

University of British Columbia(不列颠哥伦比亚大学)

Hao Chen, William J. Welch

摘要:

计算机代码可以模拟系统从随机输入到输出质量度量的变化传播。我们的目标是在没有大型蒙特卡罗实验的情况下估计临界输出尾部概率或分位数。相反,我们为输入-输出关系建立了一个统计代理,并进行了适度的评估,然后在标准的指导下依次添加更多的运行,以改善估计。我们比较了文献中的两个标准。此外,我们调查两个实际问题:如何设计初始代码运行和如何建模的输入分布。因此,我们缩小了序贯设计理论与其应用之间的差距。

英文摘要:

A computer code can simulate a system's propagation of variation from random inputs to output measures of quality. Our aim here is to estimate a critical output tail probability or quantile without a large Monte Carlo experiment. Instead, we build a statistical surrogate for the input-output relationship with a modest number of evaluations and then sequentially add further runs, guided by a criterion to improve the estimate. We compare two criteria in the literature. Moreover, we investigate two practical questions: how to design the initial code runs and how to model the input distribution. Hence, we close the gap between the theory of sequential design and its application.

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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