Partial Correlation Estimation by Joint Sparse Regression Models.
Partial Correlation Estimation by Joint Sparse Regression Models.
复制标题
DOI:
10.1198/jasa.2009.0126
复制
发表时间:
2009-06-01
影响因子:
3.7
通讯作者:
Zhu J
中科院分区:
文献类型:
--
作者:
Peng J;Wang P;Zhou N;Zhu J
In this paper, we propose a computationally efficient approach —space(Sparse PArtial Correlation Estimation)— for selecting non-zero partial correlations under the high-dimension-low-sample-size setting. This method assumes the overall sparsity of the partial correlation matrix and employs sparse regression techniques for model fitting. We illustrate the performance of space by extensive simulation studies. It is shown that space performs well in both non-zero partial correlation selection and the identification of hub variables, and also outperforms two existing methods. We then apply space to a microarray breast cancer data set and identify a set of hub genes which may provide important insights on genetic regulatory networks. Finally, we prove that, under a set of suitable assumptions, the proposed procedure is asymptotically consistent in terms of model selection and parameter estimation.
登录
查看更多内容
影响因子:
1.8
作者:
Levina, Elizaveta;Rothman, Adam;Zhu, Ji
通讯作者:
Zhu, Ji
影响因子:
4.5
作者:
Buhlmann, Peter
通讯作者:
Buhlmann, Peter
影响因子:
8
作者:
Matsuda, M;Miyagawa, K;Kamiya, K
通讯作者:
Kamiya, K
影响因子:
64.8
作者:
Jeong, H;Mason, SP;Oltvai, ZN
通讯作者:
Oltvai, ZN
影响因子:
2.1
作者:
Li, HZ;Gui, J
通讯作者:
Gui, J