Sequential Co-Sparse Factor Regression.
Sequential Co-Sparse Factor Regression.
复制标题
DOI:
10.1080/10618600.2017.1340891
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Chen K
中科院分区:
文献类型:
--
作者:
Mishra A;Dey DK;Chen K
In multivariate regression models, a sparse singular value decomposition of the regression component matrix is appealing for reducing dimensionality and facilitating interpretation. However, the recovery of such a decomposition remains very challenging, largely due to the simultaneous presence of orthogonality constraints and co-sparsity regularization. By delving into the underlying statistical data generation mechanism, we reformulate the problem as a supervised co-sparse factor analysis, and develop an efficient computational procedure, named sequential factor extraction via co-sparse unit-rank estimation (SeCURE), that completely bypasses the orthogonality requirements. At each step, the problem reduces to a sparse multivariate regression with a unit-rank constraint. Nicely, each sequentially extracted sparse and unit-rank coefficient matrix automatically leads to co-sparsity in its pair of singular vectors. Each latent factor is thus a sparse linear combination of the predictors and may influence only a subset of responses. The proposed algorithm is guaranteed to converge, and it ensures efficient computation even with incomplete data and/or when enforcing exact orthogonality is desired. Our estimators enjoy the oracle properties asymptotically; a non-asymptotic error bound further reveals some interesting finite-sample behaviors of the estimators. The efficacy of SeCURE is demonstrated by simulation studies and two applications in genetics.
登录
查看更多内容
影响因子:
4.5
作者:
Bunea, Florentina;She, Yiyuan;Wegkamp, Marten H.
通讯作者:
Wegkamp, Marten H.
影响因子:
3
作者:
Candes, Emmanuel J.;Recht, Benjamin
通讯作者:
Recht, Benjamin
影响因子:
3.3
作者:
Spellman, PT;Sherlock, G;Futcher, B
通讯作者:
Futcher, B
影响因子:
1.2
作者:
Gorski, Jochen;Pfeuffer, Frank;Klamroth, Kathrin
通讯作者:
Klamroth, Kathrin
影响因子:
56.9
作者:
Lee, TI;Rinaldi, NJ;Young, RA
通讯作者:
Young, RA