arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.5255stat.MEmath.STstat.MLstat.TH
收藏

NP维广义线性模型的确定独立性筛选

Sure independence screening in generalized linear models with NP-dimensionality

Jianqing Fan, Rui Song

摘要:

超高维变量选择在当代科学发现和统计研究中发挥着越来越重要的作用。Fan和Lv [J. R. stat. Soc. Ser. B Stat.美沙酮70(2008)849 - 911]提出了通过对边际相关性进行排序的独立筛选框架。他们表明,在具有高斯协变量和响应的线性模型的背景下,相关性排序程序具有一定的独立筛选特性。在本文中,我们提出了一个更一般的版本的独立学习排序的最大边际似然估计或最大边际似然本身在广义线性模型。我们证明了所提出的方法,与Fan和Lv [J. R. stat. Soc. Ser. B Stat.美沙酮70(2008)849 - 911]作为非常特殊的情况,也具有假选择率为零的确定筛选性质。独立学习具有确定筛选的条件出奇地简单。这证明了这种简单方法在宽光谱中的适用性。我们明确量化的程度,可以减少独立筛选,这取决于协变量和真实参数的协方差阵的相互作用的维度。仿真研究被用来说明所提出的方法的效用。此外,我们建立了一个指数不等式的拟极大似然估计,这是有用的高维统计学习。

英文摘要:

Ultrahigh-dimensional variable selection plays an increasingly important role in contemporary scientific discoveries and statistical research. Among others, Fan and Lv [J. R. Stat. Soc. Ser. B Stat. Methodol. 70 (2008) 849-911] propose an independent screening framework by ranking the marginal correlations. They showed that the correlation ranking procedure possesses a sure independence screening property within the context of the linear model with Gaussian covariates and responses. In this paper, we propose a more general version of the independent learning with ranking the maximum marginal likelihood estimates or the maximum marginal likelihood itself in generalized linear models. We show that the proposed methods, with Fan and Lv [J. R. Stat. Soc. Ser. B Stat. Methodol. 70 (2008) 849-911] as a very special case, also possess the sure screening property with vanishing false selection rate. The conditions under which the independence learning possesses a sure screening is surprisingly simple. This justifies the applicability of such a simple method in a wide spectrum. We quantify explicitly the extent to which the dimensionality can be reduced by independence screening, which depends on the interactions of the covariance matrix of covariates and true parameters. Simulation studies are used to illustrate the utility of the proposed approaches. In addition, we establish an exponential inequality for the quasi-maximum likelihood estimator which is useful for high-dimensional statistical learning.

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。

↑