A Unified Framework for Estimation of High-Dimensional Conditional Factor Models
高维条件因子模型估计的统一框架AI 解读 ↓
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高维条件因子模型估计的统一框架AI 解读 ↓
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This article presents a general framework for estimating high-dimensional conditional latent factor models via constrained nuclear norm regularization. We establish large sample properties of the estimators and provide efficient algorithms for their computation. To improve practical applicability, we propose a cross-validation procedure for selecting the regularization parameter. Our framework unifies the estimation of various conditional factor models, enabling the derivation of new asymptotic results while addressing limitations of existing methods, which are often model-specific or restrictive. Empirical analyses of the cross section of individual US stock returns suggest that imposing homogeneity improves the model’s out-of-sample predictability, with our new method outperforming existing alternatives. Supplementary materials for this article are available online, including a standardized description of the materials available for reproducing the work.