arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1009.4286math.STmath.PRstat.TH
收藏

截断数据Hill估计的渐近正态性

Asymptotic normality of Hill Estimator for truncated data

Arijit Chakrabarty

摘要:

Chakrabarty和Samorodnitsky(2009)讨论了从截断数据估计尾部指数的问题。在这篇论文中,一个样本为基础的(因此随机)选择k的建议,它表明,选择导致一致的估计逆的尾部指数。本文在一些附加的假设条件下,研究了Hill估计量在k的选择下的二阶性态。在非截断情形下,Hill估计量的渐近正态性是由基本分布的二阶正则变差假设所决定的。受此启发,我们在截断的情况下,在光的二阶正则变化相同。

英文摘要:

The problem of estimating the tail index from truncated data is addressed in Chakrabarty and Samorodnitsky (2009). In that paper, a sample based (and hence random) choice of k is suggested, and it is shown that the choice leads to a consistent estimator of the inverse of the tail index. In this paper, the second order behavior of the Hill estimator with that choice of k is studied, under some additional assumptions. In the untruncated situation, it is well known that asymptotic normality of the Hill estimator follows from the assumption of second order regular variation of the underlying distribution. Motivated by this, we show the same in the truncated case in light of the second order regular variation.

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。

↑