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Functional Conditional Volatility Modeling With Missing Data: Inference and Application to Energy Commodities

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  • Abdelbasset Djeniah
  • Mohamed Chaouch
  • Amina Angelika Bouchentouf

Abstract

This paper explores the nonparametric estimation of the volatility component in a heteroscedastic scalar‐on‐function regression model, where the underlying discrete‐time process is ergodic and subject to a missing‐at‐random mechanism. We first propose a simplified estimator for the regression and volatility operators, constructed solely from the observed data. The asymptotic properties of these estimators, including the almost sure uniform consistency rate and asymptotic distribution, are rigorously analyzed. Subsequently, the simplified estimators are employed to impute the missing data in the original process, enhancing the estimation of the regression and volatility components. The asymptotic behavior of these imputed estimators is also thoroughly investigated. A numerical comparison of the simplified and imputed estimators is presented using simulated data. Finally, the methodology is applied to real‐world data to model the volatility of daily natural gas returns, utilizing intraday EUR/USD exchange rate return curves sampled at a 1‐h frequency.

Suggested Citation

  • Abdelbasset Djeniah & Mohamed Chaouch & Amina Angelika Bouchentouf, 2025. "Functional Conditional Volatility Modeling With Missing Data: Inference and Application to Energy Commodities," Journal of Mathematics, John Wiley & Sons, vol. 2025(1).
    • Handle: RePEc:wly:jjmath:v:2025:y:2025:i:1:n:8695947
    DOI: 10.1155/jom/8695947
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    References listed on IDEAS

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