arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.1796stat.MEstat.CO
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多元数据的稳健回溯多变点点估计

Robust Retrospective Multiple Change-point Estimation for Multivariate Data

Alexandre Lung-Yut-Fong, Céline Lévy-Leduc, Olivier Cappé

摘要:

我们提出了一个非参数的统计过程中检测多个变化点的多维信号。该方法是基于一个检验统计量,推广了众所周知的Kruskal-Wallis程序的多变量设置。所提出的方法不需要任何关于观测值分布的知识,并且是无参数的。由于使用动态规划,它在计算上是高效的,并且当变点的数量未知时也可以应用。该方法通过模拟显示出比替代方案更鲁棒,特别是当面对非典型分布时(例如,具有异常值)、高噪声水平和/或高维数据。

英文摘要:

We propose a non-parametric statistical procedure for detecting multiple change-points in multidimensional signals. The method is based on a test statistic that generalizes the well-known Kruskal-Wallis procedure to the multivariate setting. The proposed approach does not require any knowledge about the distribution of the observations and is parameter-free. It is computationally efficient thanks to the use of dynamic programming and can also be applied when the number of change-points is unknown. The method is shown through simulations to be more robust than alternatives, particularly when faced with atypical distributions (e.g., with outliers), high noise levels and/or high-dimensional data.

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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