国家自然科学基金(s11171112)

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相关期刊：《Science China Mathematics》《Acta Mathematicae Applicatae Sinica》更多>>
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Gini Correlation for Feature Screening
《Acta Mathematicae Applicatae Sinica》2021年第3期590-601,共12页Jun-ying ZHANG Xiao-feng LIU Ri-quan ZHANG Hang-WANG 
by the National Natural Science Foundation of China(Nos.11171112,11201190,11101158);Doctoral Fund of Ministry of Education of China(20130076110004)and the 111 Project of China(B14019).
In this paper we propose the Gini correlation screening(GCS)method to select the important variables with ultrahigh dimensional data.The new procedure is based on the Gini correlation coefficient via the covariance be...
关键词：ultrahigh dimension Gini correlation coefficient variable screening feature ranking 
Hierarchically penalized additive hazards model with diverging number of parameters
《Science China Mathematics》2014年第4期873-886,共14页LIU JiCai ZHANG RiQuan ZHAO WeiHua 
supported by National Natural Science Foundation of China(Grant Nos.11171112,11101114 and 11201190);National Statistical Science Research Major Program of China(Grant No.2011LZ051)
In many applications,covariates can be naturally grouped.For example,for gene expression data analysis,genes belonging to the same pathway might be viewed as a group.This paper studies variable selection problem for c...
关键词：additive hazards model group variable selection oracle property diverging parameters two-levelselection 
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