Performance of Empirical Risk Minimization For Principal Component Regression

Christian Brownlees, Gu{\dh}mundur Stef\'an Gu{\dh}mundsson and Yaping Wang

Abstract: This paper establishes bounds on the predictive performance of empirical risk minimization for principal component regression. Our analysis is nonparametric, in the sense that the relation between the prediction target and the predictors is not specified. In particular, we do not rely on the assumption that the prediction target is generated by a factor model. In our analysis we consider the cases in which the largest eigenvalues of the covariance matrix of the predictors grow linearly in the number of predictors (strong signal regime) or sublinearly (weak signal regime). The main result of this paper shows that empirical risk minimization for principal component regression is consistent for prediction and, under appropriate conditions, it achieves near-optimal performance in both the strong and weak signal regimes.

Date: 2024-09, Revised 2024-09
New Economics Papers: this item is included in nep-ecm and nep-ipr
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