Selective factor extraction in high dimensions
高维数据中的选择性因子提取AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确讨论低维解释因子的提取,并提供宏观经济应用,因此与宏观因子方向直接相关。
高维数据中的选择性因子提取AI 解读 ↓
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This paper studies simultaneous feature selection and extraction in supervised and unsupervised learning. We propose and investigate selective reduced rank regression for constructing optimal explanatory factors from a parsimonious subset of input features. The proposed estimators enjoy sharp oracle inequalities, and with a predictive information criterion for model selection, they adapt to unknown sparsity by controlling both rank and row support of the coefficient matrix. A class of algorithms is developed that can accommodate various convex and nonconvex sparsity-inducing penalties, and can be used for rank-constrained variable screening in high-dimensional multivariate data. The paper also showcases applications in macroeconomics and computer vision to demonstrate how low-dimensional data structures can be effectively captured by joint variable selection and projection.