arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv math/0505419math.STcs.NAmath.NAmath.PRstat.TH
收藏

关于快速、鲁棒的众数估计器:与其他鲁棒估计器的比较及应用

On a Fast, Robust Estimator of the Mode: Comparisons to Other Robust Estimators with Applications

David R. Bickel, Rudolf Fruehwirth

AI总结:

研究半样本众数这一快速且鲁棒的连续分布众数估计器,证明其具有高崩溃点和对异常值不敏感的特性,并展示其在迭代鲁棒位置估计和质子-质子碰撞点发现中的应用。

摘要:

计算能力的进步使得众数得以更广泛地使用,因为作为最可能的值,它不受分布尾部的影响,是一种自然的集中趋势度量。本文研究了半样本众数的性质,它是一种简单且快速的连续分布众数估计器。半样本众数对异常值的敏感度低于大多数其他位置估计器,包括许多其他低偏差的众数估计器。其崩溃点为二分之一,与中位数相同。然而,由于其有限的拒绝点,半样本众数对全部大于或小于样本其他值的异常值非常不敏感。通过将众数估计器和中位数应用于来自被异常值污染的正态分布、对数正态分布和帕累托分布的样本,证实了这一点。还表明,半样本众数与鲁棒尺度估计器结合,可作为迭代鲁棒位置估计器(如Huber的M估计器)的高度鲁棒的起点。半样本众数可以很容易地推广到包含多于或少于一半样本的众数区间。本文展示了这种估计器在高能质子-质子相互作用中寻找碰撞点的应用。

英文摘要:

Advances in computing power enable more widespread use of the mode, which is a natural measure of central tendency since, as the most probable value, it is not influenced by the tails in the distribution. The properties of the half-sample mode, which is a simple and fast estimator of the mode of a continuous distribution, are studied. The half-sample mode is less sensitive to outliers than most other estimators of location, including many other low-bias estimators of the mode. Its breakdown point is one half, equal to that of the median. However, because of its finite rejection point, the half-sample mode is much less sensitive to outliers that are all either greater or less than the other values of the sample. This is confirmed by applying the mode estimator and the median to samples drawn from normal, lognormal, and Pareto distributions contaminated by outliers. It is also shown that the half-sample mode, in combination with a robust scale estimator, is a highly robust starting point for iterative robust location estimators such as Huber's M-estimator. The half-sample mode can easily be generalized to modal intervals containing more or less than half of the sample. An application of such an estimator to the finding of collision points in high-energy proton-proton interactions is presented.

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。

↑