Abstract
This paper examines the efficacy of the least absolute shrinkage and selection operator (Lasso) and Ridge algorithms in improving the volatility forecasting of the Generalized Autoregressive Conditional Heteroskedasticity (GARCH) models with exogenous covariates. Our study proposes a novel parameter estimation approach by combining a quasi-maximum-likelihood estimator (QMLE) with the Lasso and Ridge regularization methods. The other objective is to identify the most critical predictors that can enhance the volatility forecasting performance of various GARCH models. To demonstrate the effectiveness of our proposed algorithms, we conduct an empirical analysis of the US stock market. Our results indicate that by imposing a specific constraint on the penalty parameters, the Lasso and Ridge estimators can significantly enhance the volatility forecasting performance of different GARCH-type models.
Supported by Chiang Mai University.
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This research work was partially supported by Chiang Mai University.
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Yamaka, W., Maneejuk, P., Thongkairat, S. (2023). Lasso and Ridge for GARCH-X Models. In: Huynh, VN., Le, B., Honda, K., Inuiguchi, M., Kohda, Y. (eds) Integrated Uncertainty in Knowledge Modelling and Decision Making. IUKM 2023. Lecture Notes in Computer Science(), vol 14375. Springer, Cham. https://doi.org/10.1007/978-3-031-46775-2_15
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