arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.04092stat.CO
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由非同截顺序统计量生成随机样本

Generating Random Samples from Non-Identical Truncated Order Statistics

Tyler Morrison, Sean Pinkney

摘要:

我们提供了一个有效的算法来生成随机样本从有界的k顺序统计量的独立,但不一定是同分布的,随机变量的样本。边界可以是上限或下限,并且只需要保持第k个顺序统计量。此外,我们需要访问有序样本中每个统计量的逆CDF。当有界统计量的密度较大时,该算法比拒绝抽样稍慢,然而,当有界密度变得稀疏时,该算法明显更快。我们提供了一个实际的例子和一个模拟,显示了这种方法的优越性,稀疏区域所产生的紧边界条件和/或低概率密度的区域。

英文摘要:

We provide an efficient algorithm to generate random samples from the bounded kth order statistic in a sample of independent, but not necessarily identically distributed, random variables. The bounds can be upper or lower bounds and need only hold on the kth order statistic. Furthermore, we require access to the inverse CDF for each statistic in the ordered sample. The algorithm is slightly slower than rejection sampling when the density of the bounded statistic is large, however, it is significantly faster when the bounded density becomes sparse. We provide a practical example and a simulation that shows the superiority of this method for sparse regions arising from tight boundary conditions and/or over regions of low probability density.

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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