Results 61 to 70 of about 1,034 (200)

On Bivariate Distributions with Singular Part

Axioms
There are many families of bivariate distributions with given marginals. Most families, such as the Farlie–Gumbel–Morgenstern (FGM) and the Ali–Mikhail–Haq (AMH), are absolutely continuous, with an ordinary probability density. In contrast, there are few
Carles M. Cuadras
doaj   +1 more source

Some Locally Most Powerful Rank Tests For Correlation [PDF]

, 2002
Four examples are given to illustrate the ease and practicality of the procedure for finding locally most powerful rank tests for correlation. The first two examples deal with bivariate exponential models.
Conover, W. J.
core   +2 more sources

An Alternative Type II Claims Pareto Model for Reliability and Bimodal Risk Analysis: Copulas, Properties, Mathematical Modeling, and Actuarial Case Study

Journal of Mathematics, Volume 2025, Issue 1, 2025.
This article aims to present a new type‐II claims Pareto extension for statistical reliability and actuarial analysis. The new probabilistic density can be simplified in terms of the baseline densities. Some new bivariate types were developed under some copula approaches.
Atef F. Hashem, Haitham M. Yousof, M. A. Abdelkawy, M. A. Abd Elgawad, Abdisalam Hassan Muse, Mohamed G. Khalil, Pramita Mishra   +6 more
wiley   +1 more source

Indexes to Measure Dependence between Clinical Diagnostic Tests: A Comparative Study

Revista Colombiana de Estadística, 2011
In many practical situations, clinical diagnostic procedures include two or more biological traits whose outcomes are expressed on a continuous scale and are then dichotomized using a cut point.
JOSÉ RAFAEL TOVAR, JORGE ALBERTO ACHCAR
doaj  

On the Importance of Copula Choice in the Reliability Evaluation of Dependent Stress-Strength Models [PDF]

Mathematics and Modeling in Finance
Reliability assessment, vital in high-stakes engineering, often employs the stress-strength model. However, traditional models frequently assume independence between stress and strength, an assumption that can lead to inaccurate reliability estimates ...
Nooshin Hakamipour
doaj   +1 more source

Bivariate Power Lindley Models Based on Copula Functions Under Type‐II Censored Samples With Applications in Industrial and Medical Data

Journal of Mathematics, Volume 2025, Issue 1, 2025.
This study introduces three innovative bivariate models to address complex dependencies between random variables in real‐world applications. Specifically, we develop bivariate power Lindley (BPL) distribution models utilizing the Gumbel, Frank, and Clayton copulas.
Ehab M. Almetwally, Aisha Fayomi, Maha E. Qura, Pramita Mishra   +3 more
wiley   +1 more source

Quantifying compound flood event uncertainties in a wave and tidally dominated coastal region: The impacts of copula selection, sampling, record length, and precipitation gauge selection

Journal of Flood Risk Management, Volume 17, Issue 3, September 2024.
Abstract Coastal flooding is a growing hazard. Compound event characterization and uncertainty quantification are critical to accurate flood risk assessment. This study presents univariate, conditional, and joint probabilities for observed water levels, precipitation, and waves.
Joseph T. D. Lucey, Timu W. Gallien
wiley   +1 more source

Predicting failure times of coherent systems

Naval Research Logistics (NRL), Volume 71, Issue 5, Page 627-644, August 2024.
Abstract The article is focused on studying how to predict the failure times of coherent systems from the early failure times of their components. Both the cases of independent and dependent components are considered by assuming that they are identically distributed (homogeneous components). The heterogeneous components' case can be addressed similarly
Jorge Navarro, Antonio Arriaza, Alfonso Suárez‐Llorens   +2 more
wiley   +1 more source

A bivariate relative poverty line for leisure time and income poverty: Detecting intersectional differences using distributional copulas

Review of Income and Wealth, Volume 70, Issue 2, Page 395-419, June 2024.
Empirical research on poverty today often goes beyond a focus on income to consider other dimensions of well‐being. However, relatively few multidimensional poverty measures explicitly consider time‐use, despite its particular relevance to women's double burden of paid and unpaid work.
Franziska Dorn, Rosalba Radice, Giampiero Marra, Thomas Kneib   +3 more
wiley   +1 more source

A New Log-Logistic Lifetime Model with Mathematical Properties, Copula, Modified Goodness-of-Fit Test for Validation and Real Data Modeling

Mathematics, 2020
After defining a new log-logistic model and studying its properties, some new bivariate type versions using “Farlie-Gumbel-Morgenstern Copula”, “modified Farlie-Gumbel-Morgenstern Copula”, “Clayton Copula”, and “Renyi’s entropy Copula” are derived. Then,
Mahmoud M. Mansour, Mohamed Ibrahim, Khaoula Aidi, Nadeem Shafique Butt, Mir Masoom Ali, Haitham M. Yousof, Mohamed S. Hamed   +6 more
doaj   +1 more source