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463 Results Found

  • Article
  • Open Access
4 Citations
1,343 Views
21 Pages

Likelihood Based Inference and Bias Reduction in the Modified Skew-t-Normal Distribution

  • Jaime Arrué,
  • Reinaldo B. Arellano-Valle,
  • Enrique Calderín-Ojeda,
  • Osvaldo Venegas and
  • Héctor W. Gómez

26 July 2023

In this paper, likelihood-based inference and bias correction based on Firth’s approach are developed in the modified skew-t-normal (MStN) distribution. The latter model exhibits a greater flexibility than the modified skew-normal (MSN) distrib...

  • Article
  • Open Access
3 Citations
3,099 Views
27 Pages

20 February 2024

Generalized distributions have been studied a lot recently because of their flexibility and reliability in modeling lifetime data. The two-parameter Exponentially-Modified Logistic distribution is a flexible modified distribution that was introduced...

  • Article
  • Open Access
4 Citations
4,383 Views
23 Pages

20 April 2020

For multivariate frequency analysis of hydrometeorological data, the copula model is commonly used to construct joint probability distribution due to its flexibility and simplicity. The Maximum Pseudo-Likelihood (MPL) method is one of the most widely...

  • Article
  • Open Access
3 Citations
2,254 Views
13 Pages

12 October 2023

The inverse Weibull model is a simple and flexible model used for survival analysis, reliability theory, and other scientific fields. The main problem in this context is the estimation of the model parameters. In this study, a modified version of the...

  • Article
  • Open Access
1 Citations
1,448 Views
22 Pages

Bias Reduction of Modified Maximum Likelihood Estimates for a Three-Parameter Weibull Distribution

  • Adriana da Silva,
  • Felipe Quintino,
  • Frederico Almeida and
  • Dióscoros Aguiar

30 April 2025

In this work, we investigate the parameter estimation problem based on the three-parameter Weibull models, for which non-finite estimates may be obtained for the log-likelihood function in some regions of the parametric space. Based on an information...

  • Article
  • Open Access
4 Citations
1,958 Views
18 Pages

21 January 2023

In this article, we propose a modified multiplicative thinning-based integer-valued autoregressive conditional heteroscedasticity model and use the saddlepoint maximum likelihood estimation (SPMLE) method to estimate parameters. A simulation study is...

  • Article
  • Open Access
4 Citations
3,668 Views
26 Pages

A Maximum Likelihood Ensemble Filter via a Modified Cholesky Decomposition for Non-Gaussian Data Assimilation

  • Elias David Nino-Ruiz,
  • Alfonso Mancilla-Herrera,
  • Santiago Lopez-Restrepo and
  • Olga Quintero-Montoya

6 February 2020

This paper proposes an efficient and practical implementation of the Maximum Likelihood Ensemble Filter via a Modified Cholesky decomposition (MLEF-MC). The method works as follows: via an ensemble of model realizations, a well-conditioned and full-r...

  • Article
  • Open Access
12 Citations
4,759 Views
21 Pages

21 September 2018

The geometric process (GP) is a simple and direct approach to modeling of the successive inter-arrival time data set with a monotonic trend. In addition, it is a quite important alternative to the non-homogeneous Poisson process. In the present paper...

  • Article
  • Open Access
9 Citations
2,082 Views
21 Pages

7 February 2023

This study addresses the estimation problems of the modified Lindley distribution using a progressive Type-II censoring plan. Using the maximum likelihood and maximum product of spacing and Bayesian estimation methods, the unknown parameter, reliabil...

  • Article
  • Open Access
6 Citations
2,755 Views
22 Pages

Change Point Analysis for Kumaraswamy Distribution

  • Weizhong Tian,
  • Liyuan Pang,
  • Chengliang Tian and
  • Wei Ning

20 January 2023

The Kumaraswamy distribution is a common type of bounded distribution, which is widely used in agriculture, hydrology, and other fields. In this paper, we use the methods of the likelihood ratio test, modified information criterion, and Schwarz infor...

  • Article
  • Open Access
3 Citations
3,287 Views
9 Pages

Bayesian Inference in Auditing with Partial Prior Information Using Maximum Entropy Priors

  • María Martel-Escobar,
  • Francisco-José Vázquez-Polo and
  • Agustín Hernández-Bastida

1 December 2018

Problems in statistical auditing are usually one–sided. In fact, the main interest for auditors is to determine the quantiles of the total amount of error, and then to compare these quantiles with a given materiality fixed by the auditor, so th...

  • Article
  • Open Access
12 Citations
4,536 Views
17 Pages

The Modified Beta Gompertz Distribution: Theory and Applications

  • Ibrahim Elbatal,
  • Farrukh Jamal,
  • Christophe Chesneau,
  • Mohammed Elgarhy and
  • Sharifah Alrajhi

20 December 2018

In this paper, we introduce a new continuous probability distribution with five parameters called the modified beta Gompertz distribution. It is derived from the modified beta generator proposed by Nadarajah, Teimouri and Shih (2014) and the Gompertz...

  • Article
  • Open Access
4 Citations
3,383 Views
20 Pages

30 April 2019

In the modeling of successive arrival times with a monotone trend, the alpha-series process provides quite successful results. Both selecting the distribution of the first arrival time and making an optimal statistical inference play a crucial role i...

  • Article
  • Open Access
1,859 Views
14 Pages

An Alternative to the Log-Skew-Normal Distribution: Properties, Inference, and an Application to Air Pollutant Concentrations

  • Jaime Arrué,
  • Reinaldo Boris Arellano-Valle,
  • Osvaldo Venegas,
  • Heleno Bolfarine and
  • Héctor W. Gómez

18 November 2022

In this study, we consider an alternative to the log-skew-normal distribution. It is called the modified log-skew-normal distribution and introduces greater flexibility in the skewness and kurtosis parameters. We first study several of the main proba...

  • Article
  • Open Access
9 Citations
3,134 Views
16 Pages

24 March 2022

In this paper, we present a new class of distributions called the modified power family by adding an extra shape parameter. Some of its structural properties are derived. Three special cases of the new family are considered and estimated using the me...

  • Article
  • Open Access
4 Citations
1,530 Views
13 Pages

7 July 2023

Metal magnetic memory (MMM) is a nondestructive testing technology based on the magnetomechanical effect, which is widely used in the qualitative detection of stress concentration zones for welded joints. However, there is inevitable residual stress...

  • Article
  • Open Access
4 Citations
1,511 Views
29 Pages

27 September 2023

In life testing and reliability studies, most researchers have used the maximum likelihood estimation method to estimate unknown parameters, even though it has been proven that the maximum product of spacing method has properties as good as the maxim...

  • Article
  • Open Access
17 Citations
2,739 Views
18 Pages

Generalized Modified Slash Birnbaum–Saunders Distribution

  • Jimmy Reyes,
  • Inmaculada Barranco-Chamorro,
  • Diego I. Gallardo and
  • Héctor W. Gómez

6 December 2018

In this paper, a generalization of the modified slash Birnbaum–Saunders (BS) distribution is introduced. The model is defined by using the stochastic representation of the BS distribution, where the standard normal distribution is replaced by a...

  • Article
  • Open Access
721 Views
27 Pages

Multivariate Modified Dugum Distribution and Its Applications

  • Naelah Alghufily,
  • Khalaf S. Sultan and
  • Hossam M. M. Radwan

15 May 2025

The modified Dagum distribution is a highly versatile statistical model, and it is included in several important parametric families of distributions, with applications, such as economics and public health. In this paper, we introduce a multivariate...

  • Article
  • Open Access
71 Citations
5,012 Views
14 Pages

26 February 2021

This paper aims to find a statistical model for the COVID-19 spread in the United Kingdom and Canada. We used an efficient and superior model for fitting the COVID 19 mortality rates in these countries by specifying an optimal statistical model. A ne...

  • Article
  • Open Access
37 Citations
3,011 Views
34 Pages

Topp–Leone Modified Weibull Model: Theory and Applications to Medical and Engineering Data

  • Salem A. Alyami,
  • Ibrahim Elbatal,
  • Naif Alotaibi,
  • Ehab M. Almetwally,
  • Hassan M. Okasha and
  • Mohammed Elgarhy

16 October 2022

In this article, a four parameter lifetime model called the Topp–Leone modified Weibull distribution is proposed. The suggested distribution can be considered as an alternative to Kumaraswamy Weibull, generalized modified Weibull, extend odd We...

  • Article
  • Open Access
14 Citations
2,100 Views
23 Pages

Modeling the failure times of processors and memories in computers is crucial for ensuring the reliability and robustness of data science workflows. By understanding the failure characteristics of the hardware components, data scientists can develop...

  • Article
  • Open Access
6 Citations
4,885 Views
24 Pages

18 October 2017

In this study, the modified Cramér-Rao lower bounds (MCRLBs) on the joint estimation of target position and velocity is investigated for a universal mobile telecommunication system (UMTS)-based passive multistatic radar system with antenna arrays. Fi...

  • Article
  • Open Access
17 Citations
3,446 Views
26 Pages

4 March 2022

This study investigates, for the first time, the product of spacing estimation of the modified Kies exponential distribution parameters as well as the acceleration factor using constant-stress partially accelerated life tests under the Type-II censor...

  • Article
  • Open Access
2 Citations
1,615 Views
23 Pages

6 November 2024

The aim of this research is to estimate the parameters of the modified Frechet-exponential (MFE) distribution using different methods when applied to progressive type-II censored samples. These methods include using the maximum likelihood technique a...

  • Article
  • Open Access
1 Citations
1,238 Views
24 Pages

1 June 2025

The classical exponential model, despite its flexibility, fails to describe data with non-constant failure or between-event dependency. To overcome this limitation, two new bivariate lifetime distributions are introduced in this paper. The Farlie&nda...

  • Article
  • Open Access
82 Citations
3,331 Views
25 Pages

23 November 2020

Object recognition in depth images is challenging and persistent task in machine vision, robotics, and automation of sustainability. Object recognition tasks are a challenging part of various multimedia technologies for video surveillance, human&ndas...

  • Article
  • Open Access
5 Citations
3,193 Views
29 Pages

Multiple Error Correction in Redundant Residue Number Systems: A Modified Modular Projection Method with Maximum Likelihood Decoding

  • Mikhail Babenko,
  • Anton Nazarov,
  • Maxim Deryabin,
  • Nikolay Kucherov,
  • Andrei Tchernykh,
  • Nguyen Viet Hung,
  • Arutyun Avetisyan and
  • Victor Toporkov

4 January 2022

Error detection and correction codes based on redundant residue number systems are powerful tools to control and correct arithmetic processing and data transmission errors. Decoding the magnitude and location of a multiple error is a complex computat...

  • Article
  • Open Access
10 Citations
1,945 Views
15 Pages

7 July 2023

This article presents a new family of symmetric heavy-tailed distributions. This model is based on the ratio of two independent random variables; one with a normal distribution in the numerator and another with a Birnbaum–Saunders distribution...

  • Article
  • Open Access
7 Citations
1,503 Views
38 Pages

The Additive Xgamma-Burr XII Distribution: Properties, Estimation and Applications

  • Hebatalla H. Mohammad,
  • Faten S. Alamri,
  • Heba N. Salem and
  • Abeer A. EL-Helbawy

27 May 2024

This paper introduces a new four-parameter additive model, named xgamma-Burr XII distribution, by considering two competing risks: the former has the xgamma distribution and the latter has the Burr XII distribution. A graphical description of the xga...

  • Article
  • Open Access
1 Citations
1,774 Views
16 Pages

3 January 2025

To guarantee the reliability and integrity of audio, data have been focused on as an essential topic as the fast development of generative AI. Significant progress in machine learning and speech synthesis has increased the potential for audio tamperi...

  • Article
  • Open Access
8 Citations
6,331 Views
18 Pages

Comparison of Wind Energy Generation Using the Maximum Entropy Principle and the Weibull Distribution Function

  • Muhammad Shoaib,
  • Imran Siddiqui,
  • Shafiqur Rehman,
  • Saif Ur Rehman,
  • Shamim Khan and
  • Aref Lashin

19 October 2016

Proper knowledge of the wind characteristics of a site is of fundamental importance in estimating wind energy output from a selected wind turbine. The present paper focuses on assessing the suitability and accuracy of the fitted distribution function...

  • Article
  • Open Access
3 Citations
2,928 Views
12 Pages

19 December 2021

Evidence for non-modifiable and modifiable factors associated with the utilization of advance directives (ADs) in heart failure (HF) is lacking. The purpose of this study was to examine baseline-to-3-month changes in knowledge, attitudes, and benefit...

  • Article
  • Open Access
4 Citations
3,601 Views
15 Pages

Modified Power-Symmetric Distribution

  • Emilio Gómez-Déniz,
  • Yuri A. Iriarte,
  • Enrique Calderín-Ojeda and
  • Héctor W. Gómez

15 November 2019

In this paper, a general class of modified power-symmetric distributions is introduced. By choosing as symmetric model the normal distribution, the modified power-normal distribution is obtained. For the latter model, some of its more relevant statis...

  • Article
  • Open Access
3 Citations
2,453 Views
19 Pages

10 April 2021

In this paper, we introduce a robust version of the empirical likelihood estimator for semiparametric moment condition models. This estimator is obtained by minimizing the modified Kullback–Leibler divergence, in its dual form, using truncated orthog...

  • Article
  • Open Access
79 Citations
3,845 Views
24 Pages

25 May 2020

In this paper, we first study a new two parameter lifetime distribution. This distribution includes “monotone” and “non-monotone” hazard rate functions which are useful in lifetime data analysis and reliability. Some of its ma...

  • Article
  • Open Access
969 Views
21 Pages

8 April 2025

This paper develops tests for hypotheses concerning subvectors of parameters in models defined by moment conditions. It is well known that conventional tests such as Wald, Likelihood-ratio and Score tests tend to over-reject when the identification i...

  • Article
  • Open Access
5 Citations
3,082 Views
20 Pages

4 February 2021

The distance constrained maximum likelihood procedure (DCML) optimally combines a robust estimator with the maximum likelihood estimator with the purpose of improving its small sample efficiency while preserving a good robustness level. It has been p...

  • Article
  • Open Access
2 Citations
3,093 Views
31 Pages

Further Properties and Estimations of Exponentiated Generalized Linear Exponential Distribution

  • Chien-Tai Lin,
  • Yu Liu,
  • Yun-Wei Li,
  • Zhi-Wei Chen and
  • Hassan M. Okasha

20 December 2021

The recent exponentiated generalized linear exponential distribution is a generalization of the generalized linear exponential distribution and the exponentiated generalized linear exponential distribution. In this paper, we study some statistical pr...

  • Article
  • Open Access
2 Citations
2,724 Views
11 Pages

Deactivation of an implantable cardioverter-defibrillator (ICD) is a critical issue in the advance care planning (ACP) of ICD recipients; however, related perspectives have rarely been explored. Thus, this study aimed to provide an initial investigat...

  • Article
  • Open Access
73 Citations
5,913 Views
19 Pages

3 February 2018

On Jeju Island, South Korea, an investigation was conducted to determine the best method for estimating Weibull parameters. Six methods commonly used in many fields of the wind energy industry were reviewed: the empirical, moment, graphical, energy p...

  • Article
  • Open Access
62 Citations
2,773 Views
29 Pages

4 November 2020

The extreme value theory is expanded by proposing and studying a new version of the Fréchet model. Some new bivariate type extensions using Farlie–Gumbel–Morgenstern copula, modified Farlie–Gumbel–Morgenstern copula, Cl...

  • Article
  • Open Access
1 Citations
3,103 Views
14 Pages

18 October 2023

In estimating logistic regression models, convergence of the maximization algorithm is critical; however, this may fail. Numerous bias correction methods for maximum likelihood estimates of parameters have been conducted for cases of complete data se...

  • Article
  • Open Access
3 Citations
1,793 Views
22 Pages

24 April 2024

Ocean Acoustic Waveguide Remote Sensing (OAWRS) typically utilizes large-aperture linear arrays combined with coherent beamforming to estimate the spatial distribution of acoustic scattering echoes. The conventional maximum likelihood deconvolution (...

  • Article
  • Open Access
23 Citations
7,107 Views
10 Pages

Influence of the Accumulation of Unhealthy Eating Habits on Obesity in a General Japanese Population: The Hisayama Study

  • Yuki Ishida,
  • Daigo Yoshida,
  • Takanori Honda,
  • Yoichiro Hirakawa,
  • Mao Shibata,
  • Satoko Sakata,
  • Yoshihiko Furuta,
  • Emi Oishi,
  • Jun Hata and
  • Toshiharu Ninomiya

16 October 2020

Few studies have examined the association between the accumulation of unhealthy eating habits and the likelihood of obesity or central obesity in a general Japanese population. We examined this association in a sample of 1906 community-dwelling Japan...

  • Article
  • Open Access
14 Citations
2,097 Views
19 Pages

6 August 2022

The estimation of the unknown parameters of Type II Half Logistic Weibull (TIIHLW) distribution was analyzed in this paper. The maximum likelihood and Bayes methods are used as estimation methods. These estimators are used to estimate the fuzzy relia...

  • Article
  • Open Access
35 Citations
3,676 Views
23 Pages

A New Family of Continuous Probability Distributions

  • M. El-Morshedy,
  • Fahad Sameer Alshammari,
  • Yasser S. Hamed,
  • Mohammed S. Eliwa and
  • Haitham M. Yousof

5 February 2021

In this paper, a new parametric compound G family of continuous probability distributions called the Poisson generalized exponential G (PGEG) family is derived and studied. Relevant mathematical properties are derived. Some new bivariate G families u...

  • Article
  • Open Access
2 Citations
2,569 Views
19 Pages

5 September 2020

A new family of probability distributions is defined and applied for modeling symmetric real-life datasets. Some new bivariate type G families using Farlie–Gumbel–Morgenstern copula, modified Farlie–Gumbel–Morgenstern copula,...

  • Article
  • Open Access
21 Citations
8,394 Views
17 Pages

Farmers’ Willingness to Adopt Late Blight-Resistant Genetically Modified Potatoes

  • Hans De Steur,
  • Ellen J. Van Loo,
  • Jasmien Maes,
  • Godelieve Gheysen and
  • Wim Verbeke

The commercialization of genetically modified (GM) crops remains highly contested in the European Union (EU). While research has mainly focused on public and consumer opinions, few studies have investigated farmers’ reactions towards such crops...

  • Article
  • Open Access
1 Citations
3,637 Views
18 Pages

20 January 2022

Background: For the kinetic models used in contrast-based medical imaging, the assignment of the arterial input function named AIF is essential for the estimation of the physiological parameters of the tissue via solving an optimization problem. Obje...

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