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作者:

Li, Gaorong (Li, Gaorong.) (学者:李高荣) | Peng, Heng (Peng, Heng.) | Zhang, Jun (Zhang, Jun.) | Zhu, Lixing (Zhu, Lixing.)

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Scopus SCIE

摘要:

Independence screening is a variable selection method that uses a ranking criterion to select significant variables, particularly for statistical models with nonpolynomial dimensionality or "large p, small n" paradigms when p can be as large as an exponential of the sample size n. In this paper we propose a robust rank correlation screening (RRCS) method to deal with ultra-high dimensional data. The new procedure is based on the Kendall tau correlation coefficient between response and predictor variables rather than the Pearson correlation of existing methods. The new method has four desirable features compared with existing independence screening methods. First, the sure independence screening property can hold only under the existence of a second order moment of predictor variables, rather than exponential tails or alikeness, even when the number of predictor variables grows as fast as exponentially of the sample size. Second, it can be used to deal with semiparametric models such as transformation regression models and single-index models under monotonic constraint to the link function without involving nonparametric estimation even when there are nonparametric functions in the models. Third, the procedure can be largely used against outliers and influence points in the observations. Last, the use of indicator functions in rank correlation screening greatly simplifies the theoretical derivation due to the boundedness of the resulting statistics, compared with previous studies on variable screening. Simulations are carried out for comparisons with existing methods and a real data example is analyzed.

关键词:

dimensionality reduction large p small n rank correlation screening semiparametric models SIS Variable selection

作者机构:

  • [ 1 ] [Li, Gaorong]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 2 ] [Peng, Heng]Hong Kong Baptist Univ, Dept Math, Hong Kong, Hong Kong, Peoples R China
  • [ 3 ] [Zhu, Lixing]Hong Kong Baptist Univ, Dept Math, Hong Kong, Hong Kong, Peoples R China
  • [ 4 ] [Zhang, Jun]Shenzhen Univ, Shen Zhen Hong Kong Joint Res Ctr Appl Stat, Shenzhen 518060, Peoples R China

通讯作者信息:

  • 李高荣

    [Li, Gaorong]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China

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来源 :

ANNALS OF STATISTICS

ISSN: 0090-5364

年份: 2012

期: 3

卷: 40

页码: 1846-1877

4 . 5 0 0

JCR@2022

ESI学科: MATHEMATICS;

ESI高被引阀值:74

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 225

SCOPUS被引频次: 244

ESI高被引论文在榜: 17 展开所有

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