VS-LTGARCHX: A Flexible Subset Selection Approach for Estimation of log-TGARCHX Models and Its Application to BTC Markets - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2023

VS-LTGARCHX: A Flexible Subset Selection Approach for Estimation of log-TGARCHX Models and Its Application to BTC Markets

Résumé

The log-TGARCHX model is less restrictive in terms of inclusion of exogenous variables and asymmetry lags compared to the GARCHX model. However, adding less (more) covariates than necessary may lead to underfitting (overfitting), respectively. In this context, we propose a new algorithm, called VS-LTGARCHX, which incorporates a variable selection procedure into the log-TGARCHX estimation process. Furthermore, the VS-LTGARCHX algorithm is applied to extremely volatile BTC markets using 42 conditioning variables. Interestingly, our results show that the VS-LTGARCHX models outperform the specified benchmark models in one-step-ahead forecasting.
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Dates et versions

hal-04283159 , version 1 (13-11-2023)
hal-04283159 , version 2 (15-11-2023)

Identifiants

  • HAL Id : hal-04283159 , version 2

Citer

Victor Elvira, Samir Orujov, Audrey Poterie, Farid Rajabov, Francois Septier. VS-LTGARCHX: A Flexible Subset Selection Approach for Estimation of log-TGARCHX Models and Its Application to BTC Markets. 2023. ⟨hal-04283159v2⟩
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