arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1707.09752stat.ML
收藏

稳健统计异常检测

Anomaly Detection by Robust Statistics

Peter J. Rousseeuw, Mia Hubert

摘要:

真实数据通常包含异常情况,也称为离群值。这些可能会破坏分析结果,但它们也可能包含有价值的信息。在这两种情况下,检测这种异常的能力是必不可少的。一个有用的工具,用于此目的是强大的统计,其目的是检测离群值,首先拟合的大部分数据,然后标记数据点偏离它。我们提出了几个强大的方法和由此产生的图形离群值检测工具的概述。我们讨论单变量,低维和高维数据,如估计位置和分散,线性回归,主成分分析,分类,聚类和功能数据分析的强大程序。此外,具有挑战性的新课题的细胞野值的介绍。

英文摘要:

Real data often contain anomalous cases, also known as outliers. These may spoil the resulting analysis but they may also contain valuable information. In either case, the ability to detect such anomalies is essential. A useful tool for this purpose is robust statistics, which aims to detect the outliers by first fitting the majority of the data and then flagging data points that deviate from it. We present an overview of several robust methods and the resulting graphical outlier detection tools. We discuss robust procedures for univariate, low-dimensional, and high-dimensional data, such as estimating location and scatter, linear regression, principal component analysis, classification, clustering, and functional data analysis. Also the challenging new topic of cellwise outliers is introduced.

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。

↑