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Mixing properties of ARMA processes

open access: yesStochastic Processes and Their Applications, 1988
Let \(\{\) Y(t)\(\}\) be a stationary process in R l. Denote by \({\mathcal A}_ 0\) and \({\mathcal A}_ k\) the \(\sigma\)-algebra generated by \(\{\) Y(t),t\(\leq 0\}\) and \(\{\) Y(t),t\(\geq k\}\), respectively. Define \[ \beta (k)=E\sup_{B\in {\mathcal A}\quad k}| P(B| {\mathcal A}_ 0)- P(B)|. \] If there exists \(\rho\in (0,1)\) such that \(\beta (
Mokkadem, Abdelkader   +1 more
exaly   +4 more sources

Population Genomics Provides Insights Into Genomic Features of Inbreeding Depression in Arma Chinensis [PDF]

open access: yesEvolutionary Applications
Arma chinensis, a predatory insect renowned for its prey diversity in East Asia, is effective in controlling agricultural and forestry pests. However, after introducing field populations into indoor subcultures, features of inbreeding depression have ...
Bin Li   +5 more
doaj   +2 more sources

Time series with infinite-order partial copula dependence

open access: yesDependence Modeling, 2022
Stationary and ergodic time series can be constructed using an s-vine decomposition based on sets of bivariate copula functions. The extension of such processes to infinite copula sequences is considered and shown to yield a rich class of models that ...
Bladt Martin, McNeil Alexander J.
doaj   +1 more source

On the Adequacy of Using T Approximation in Bayesian Inferences of Arma Models [PDF]

open access: yesThe Egyptian Statistical Journal, 1999
The main objective of this paper is to examine the adequacy of using the t approximation in handling the Bayesian inferential problems of autoregressive-moving average (ARMA) processes.
Samir Shaarawy, Gamal El-Shawadfy
doaj   +1 more source

ARMA–GARCH model with fractional generalized hyperbolic innovations

open access: yesFinancial Innovation, 2022
In this study, a multivariate ARMA–GARCH model with fractional generalized hyperbolic innovations exhibiting fat-tail, volatility clustering, and long-range dependence properties is introduced. To define the fractional generalized hyperbolic process, the
Sung Ik Kim
doaj   +1 more source

Modelling Volatile Time Series with V-Transforms and Copulas

open access: yesRisks, 2021
An approach to the modelling of volatile time series using a class of uniformity-preserving transforms for uniform random variables is proposed. V-transforms describe the relationship between quantiles of the stationary distribution of the time series ...
Alexander J. McNeil
doaj   +1 more source

On a Class of Z+-Valued Autoregressive Moving Average (ARMA) Processes

open access: yesRevstat Statistical Journal, 2008
A convolution semigroup of probability generating functions and its related operator ⊙F are used to construct a class of stationary Z+-valued autoregressive moving average (ARMA) processes.
Emad-Eldin A. A. Aly , Nadjib Bouzar
doaj   +1 more source

Root tracking using time-varying autoregressive moving average models and sigma-point Kalman filters

open access: yesEURASIP Journal on Advances in Signal Processing, 2020
Root tracking is a powerful technique that provides insight into the mechanisms of various time-varying processes. The poles and the zeros of a signal-generating system determine the spectral characteristics of the signal under consideration.
Kyriaki Kostoglou, Michael Lunglmayr
doaj   +1 more source

Functional clustering of periodic transcriptional profiles through ARMA(p,q). [PDF]

open access: yesPLoS ONE, 2010
BackgroundGene clustering of periodic transcriptional profiles provides an opportunity to shed light on a variety of biological processes, but this technique relies critically upon the robust modeling of longitudinal covariance structure over time ...
Ning Li   +5 more
doaj   +1 more source

Bayesian Identification of Seasonal Vector ARMA Processes [PDF]

open access: yesThe Egyptian Statistical Journal
This research paper uses the Bayesian approach to establish an approximate method to specify the four orders of multivariate seasonal autoregressive moving average (SARMA) models. The proposed methodology consists of four coherent consecutive steps.
Samir M. Shaarawy   +2 more
doaj   +1 more source

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