Results 1 to 10 of about 891 (98)

Quasi-maximum exponential likelihood estimator and portmanteau test of double AR(p) $\operatorname{AR}(p)$ model based on Laplace(a,b) $\operatorname{Laplace}(a,b)$ [PDF]

open access: yesJournal of Inequalities and Applications, 2018
The paper studies the estimation and the portmanteau test for double AR(p) $\operatorname{AR}(p)$ model with Laplace(a,b) $\operatorname{Laplace}(a,b)$ distribution.
Haiyan Xuan   +4 more
doaj   +2 more sources

Portmanteau Test for ARCH-Type Models by Using High-Frequency Data

open access: yesAxioms
The portmanteau test is an effective tool for testing the goodness of fit of models. Motivated by the fact that high-frequency data can improve the estimation accuracy of models, a modified portmanteau test using high-frequency data is proposed for ARCH ...
Chen Yanshan, Chunliang Deng
exaly   +3 more sources

An Application of Markov Switching Models in Predicting Visceral Leishmaniasis in Ardabil Province, Iran [PDF]

open access: yesJournal of Health Sciences and Surveillance System, 2023
Background: Visceral leishmaniasis (VL) is a neglected infection currently occurring in some regions of Europe, Asia, Africa, and America. This study was an attempt to determine the temporal patterns of VL from January 2000 to December 2019 in the ...
Vahid Rahmanian   +3 more
doaj   +1 more source

Investigating the Effect of Government Financing Methods on Economic Growth in Iran: Markov-Switching (MS) Approach [PDF]

open access: yesسیاست‌گذاری اقتصادی, 2022
Introduction: It is important to note that the effects of different methods of government financing (such as taxes, borrowing, selling natural resources, etc.) are not the same in the economy, and these different methods can affect macroeconomic ...
Jalal Montazeri Shoorekchali
doaj   +1 more source

Time-varying long-term Memory in the Tehran Stock Exchange: the Generalized Hurst Exponents and the Rolling Window Approach [PDF]

open access: yesJournal of Asset Management and Financing, 2020
Objective: This study is the first to examine the issue of time-varying long-term memory in the Tehran Stock Exchange, using a new efficiency index through a rolling window technique.
elham farzanegan
doaj   +1 more source

Testing network autocorrelation without replicates.

open access: yesPLoS ONE, 2022
In this paper, we propose a portmanteau test for whether a graph-structured network dataset without replicates exhibits autocorrelation across units connected by edges. Specifically, the well known Ljung-Box test for serial autocorrelation of time series
Kwun Chuen Gary Chan   +3 more
doaj   +1 more source

A Novel Correction for the Adjusted Box-Pierce Test

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
The classical Box-Pierce and Ljung-Box tests for auto-correlation of residuals possess severe deviations from nominal type I error rates. Previous studies have attempted to address this issue by either revising existing tests or designing new techniques.
Sidy Danioko   +4 more
doaj   +1 more source

Comparison of Some Portmanteau Tests by Using Simulation [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2012
Passing the chosen diagnosed candidate model is considered an employed modeled gate and the possibility of data presentation to be used in prediction and control.
doaj   +1 more source

Cryptocurrencies, gold, and WTI crude oil market efficiency: a dynamic analysis based on the adaptive market hypothesis

open access: yesFinancial Innovation, 2021
This study examined the evolving oil market efficiency by applying daily historical data to the three benchmark cryptocurrencies (Bitcoin, Ethereum, and Ripple), gold, and West Texas Intermediate (WTI) crude oil.
Majid Mirzaee Ghazani   +1 more
doaj   +1 more source

Portmanteau Goodness-of-Fit Test for Asymmetric Power GARCH Models

open access: yesAustrian Journal of Statistics, 2016
The asymptotic distribution of a vector of autocorrelations of squared residuals is derived for a wide class of asymmetric GARCH models. Portmanteau adequacy tests are deduced.
Michel Carbon, Christian Francq
doaj   +1 more source

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