Results 1 to 10 of about 4,620 (165)

The Estimation of the Order of an ARMA Process

open access: yesAnnals of Statistics, 1980
Under general conditions strong consistency of certain estimates of the maximum lags of an autoregressive moving average process is established. A theorem on weak consistency is also proved and in certain cases where consistency does not hold the probability of over-estimation of a maximum lag is evaluated.
E J Hannan
exaly   +3 more sources

The distribution of the maximum of an ARMA(1, 1) process [PDF]

open access: yesComptes Rendus. Mathématique, 2020
We give the cumulative distribution function of $M_n=\max \left(X_1, \ldots , X_n \right)$, the maximum of a sequence of $n$ observations from an ARMA(1, 1) process.
Withers, Christopher S.   +1 more
doaj   +4 more sources

Enhanced separation of long-term memory from short-term memory on top of LSTM: Neural network-based stock index forecasting. [PDF]

open access: yesPLoS ONE
LSTM (Long Short-Term Memory Network) is currently extensively utilized for forecasting financial time series, primarily due to its distinct advantages in separating the long-term from the short-term memory information within a sequence.
Hongfei Xiao
doaj   +2 more sources

AcMNPV, a viral insecticide of Lepidoptera pests, stimulates the immune response of the natural enemy Arma chinensis Fallou [PDF]

open access: yesApplied and Environmental Microbiology
Autographa Californica multiple nucleopolyhedrovirus (AcMNPV) is the most widely studied baculovirus currently used as a biopesticide application for crop pest control.
Ximei Yuan   +7 more
doaj   +2 more sources

Can crude oil prices predict world tuna prices? [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
World tuna prices exhibit substantial fluctuations over time. We studied monthly tuna and preceding crude oil prices from 1986 to 2018, using linear regression models with autoregressive and moving average (ARMA) errors.
Boonmee Lee   +3 more
doaj   +1 more source

Modelling International Tourist Arrivals Volatility in Zimbabwe Using a GARCH Process [PDF]

open access: yesAfrican Journal of Hospitality, Tourism and Leisure, 2021
The aim of the paper was to develop bootstrap prediction intervals for international tourism demand and volatility in Zimbabwe after modelling with an ARMA-GARCH process.
Tendi Makoni, Delson Chikobvu
doaj   +1 more source

Scaled Muth–ARMA Process Applied to Finance Market

open access: yesMathematics, 2023
The analysis of financial market time series is an important source for understanding the economic reality of a country. We introduce a new autoregressive moving average (ARMA) process, the sMuth–ARMA model, which has the sMuth law as the marginal ...
Abraão D. C. Nascimento   +3 more
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

A Hybrid Method for Structural Modal Parameter Identification Based on IEMD/ARMA: A Numerical Study and Experimental Model Validation

open access: yesApplied Sciences, 2022
This article presents a hybrid method of structural modal parameter identification, based on improved empirical mode decomposition (EMD) and autoregressive and moving average (ARMA).
Chun Fu, Shao-Fei Jiang
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

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