Journal
JOURNAL OF ECONOMETRICS
Volume 188, Issue 1, Pages 40-58Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jeconom.2014.11.005
Keywords
Final prediction error; High dimensionality; Model averaging; Model selection; Misspecification; Quantile regression
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Funding
- Singapore Ministry of Education for Academic Research Fund [MOE2012-T2-2-021]
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In this paper we consider model averaging for quantile regressions (QR) when all models under investigation are potentially misspecified and the number of parameters is diverging with the sample size. To allow for the dependence between the error terms and regressors in the QR models, we propose a jackknife model averaging (JMA) estimator which selects the weights by minimizing a leave-one-out cross-validation criterion function and demonstrate its asymptotic optimality in terms of minimizing the out-of-sample final prediction error. We conduct simulations to demonstrate the finite-sample performance of our estimator and compare it with other model selection and averaging methods. We apply our JMA method to forecast quantiles of excess stock returns and wages. (C) 2015 Elsevier B.V. All rights reserved.
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