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arXiv 2104.08408stat.ME
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广义矩阵分解回归:双向结构数据的估计与推断

Generalized Matrix Decomposition Regression: Estimation and Inference for Two-way Structured Data

Yue Wang, Ali Shojaie, Timothy W. Randolph, Parker Knight, Jing Ma

摘要:

本文研究了双向结构化数据的高维回归问题。为了估计高维系数向量,我们提出了广义矩阵分解回归(GMDR),以有效地利用行和列结构上的任何辅助信息。GMDR将主成分回归(PCR)扩展到双向结构化数据,但与PCR不同的是,GMDR选择最能预测结果的成分,从而实现更准确的预测。对于个别变量的回归系数的推断,我们提出了广义矩阵分解推断(GMDI),一个一般的高维推理框架,一个大家庭的估计,包括建议GMDR估计。GMDI为相关辅助行和列结构的建模提供了更大的灵活性。因此,GMDI不要求真实的回归系数是稀疏的;它还允许相关和异方差观测。我们在第一类错误率和功效方面研究了GMDI的理论特性,并证明了GMDR和GMDI在模拟研究和应用于人体微生物组数据方面的有效性。

英文摘要:

This paper studies high-dimensional regression with two-way structured data. To estimate the high-dimensional coefficient vector, we propose the generalized matrix decomposition regression (GMDR) to efficiently leverage any auxiliary information on row and column structures. The GMDR extends the principal component regression (PCR) to two-way structured data, but unlike PCR, the GMDR selects the components that are most predictive of the outcome, leading to more accurate prediction. For inference on regression coefficients of individual variables, we propose the generalized matrix decomposition inference (GMDI), a general high-dimensional inferential framework for a large family of estimators that include the proposed GMDR estimator. GMDI provides more flexibility for modeling relevant auxiliary row and column structures. As a result, GMDI does not require the true regression coefficients to be sparse; it also allows dependent and heteroscedastic observations. We study the theoretical properties of GMDI in terms of both the type-I error rate and power and demonstrate the effectiveness of GMDR and GMDI on simulation studies and an application to human microbiome data.

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。

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