On Markov− switching asymmetric logGARCH models: Stationarity and estimation
A Ghezal, I Zemmouri - Filomat, 2023 - doiserbia.nb.rs
In the present paper, we study some probabilistic and statistical properties of the Markov-
switching asymmetric logGARCH processes, where the log− volatility follows a standard …
switching asymmetric logGARCH processes, where the log− volatility follows a standard …
Markov Switching Garch Models: Higher Order Moments, Kurtosis Measures, and Volatility Evaluation in Recessions and Pandemic
M Cavicchioli - Journal of Business & Economic Statistics, 2022 - Taylor & Francis
In this article, we derive neat matrix formulas in closed form for computing higher order
moments and kurtosis of univariate Markov switching GARCH models. Then we provide …
moments and kurtosis of univariate Markov switching GARCH models. Then we provide …
[PDF][PDF] Solutions and local stability of the Jacobsthal system of difference equations
A Ghezal, M Balegh, I Zemmouri - AIMS Math, 2024 - aimspress.com
We presented a comprehensive theory for deriving closed-form expressions and
representations of the general solutions for a specific case of systems involving Riccati …
representations of the general solutions for a specific case of systems involving Riccati …
QMLE for Periodic Time-Varying Asymmetric GARCH Models
A Ghezal - Communications in Mathematics and Statistics, 2021 - Springer
This paper establishes probabilistic and statistical properties of the extension of time-
invariant coefficients asymmetric\log log GARCH processes to periodically time-varying …
invariant coefficients asymmetric\log log GARCH processes to periodically time-varying …
[PDF][PDF] Solvability of a bidimensional system of rational difference equations via Mersenne numbers
A Ghezal, I Zemmouri - Palest. J. Math., 2024 - pjm.ppu.edu
SOLVABILITY OF A BIDIMENSIONAL SYSTEM OF RATIONAL DIFFERENCE EQUATIONS VIA
MERSENNE NUMBERS Page 1 Palestine Journal of Mathematics Vol 13(2)(2024) , 84–93 © …
MERSENNE NUMBERS Page 1 Palestine Journal of Mathematics Vol 13(2)(2024) , 84–93 © …
Spectral analysis of Markov switching GARCH models with statistical inference
M Cavicchioli - Scandinavian Journal of Statistics, 2023 - Wiley Online Library
We derive matrix expressions in closed form for the autocovariance function and the spectral
density of Markov switching GARCH models and their powers. For this, we apply the Riesz …
density of Markov switching GARCH models and their powers. For this, we apply the Riesz …
Statistical inference for mixture GARCH models with financial application
M Cavicchioli - Computational Statistics, 2021 - Springer
In this paper we consider mixture generalized autoregressive conditional heteroskedastic
models, and propose a new iteration algorithm of type EM for the estimation of model …
models, and propose a new iteration algorithm of type EM for the estimation of model …
Covariance analysis and GMM estimation of Markov switching bilinear processes
A Bibi, F Hamdi - Statistics, 2024 - Taylor & Francis
In this paper, we study the second and third order cumulants of bilinear models with regime
changes according to a Markov chain (MS− BL for short). We provide conditions for the …
changes according to a Markov chain (MS− BL for short). We provide conditions for the …
QMLE of periodic time-varying bilinear– GARCH models
A Bibi, A Ghezal - Communications in Statistics-Theory and …, 2019 - Taylor & Francis
In the current paper, we explore some necessary probabilistic properties for the asymptotic
inference of a broad class of periodic bilinear–GARCH processes (P–BLGARCH) obtained …
inference of a broad class of periodic bilinear–GARCH processes (P–BLGARCH) obtained …
Generalized autocovariance matrices for multivariate time series
M Cavicchioli - Communications in Statistics-Theory and Methods, 2024 - Taylor & Francis
The paper treats the modeling of stationary multivariate stochastic processes via frequency
domain, and extends the notion of generalized autocovariance function, given by Proietti …
domain, and extends the notion of generalized autocovariance function, given by Proietti …