Sparse dimension reduction for survival data

Sparse dimension reduction for survival data
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生存数据的稀疏降维

DOI:
10.1007/s00180-012-0383-4
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发表时间:
2013
期刊:
Computational statistics (Zeitschrift)
影响因子:
--
通讯作者:
Dixin Zhang
Dixin Zhang
中科院分区:
--
文献类型:
--
作者:
Changrong Yan;Dixin Zhang

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本文通过一种新的惩罚和梯度精化外积的组合(rOPG;Xia等人)研究了生存数据充分降维空间的估计和变量选择。在J R Stat Soc Ser B:363-410,2002),以下称为SH-OPG。SH-OPG算法能够在穷举估计中心子空间的同时选择信息协变量;同时,在去除非信息回归变量后,估计的方向自动保持正交性。通过大量的仿真研究和实际数据分析,验证了SH-OPG的有效性。
In this paper, we study the estimation and variable selection of the sufficient dimension reduction space for survival data via a new combination ofpenalty and the refined outer product of gradient method (rOPG; Xia et al. in J R Stat Soc Ser B 64:363–410, 2002), called SH-OPG hereafter. SH-OPG can exhaustively estimate the central subspace and select the informative covariates simultaneously; Meanwhile, the estimated directions remain orthogonal automatically after dropping noninformative regressors. The efficiency of SH-OPG is verified through extensive simulation studies and real data analysis.
用于密度估计的内核数据压缩
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
Atsuyuki;Kogure;Masahiko;Sagae
通讯作者: Sagae