Results 11 to 20 of about 125 (118)

Reliability Inference for Bivariate Lifetimes With Odd Fréchet Half-Logistic Marginals Under Unified Hybrid Censoring

Journal of Mathematics
A bivariate lifetime model is proposed by coupling odd Fréchet half-logistic (OFHL) marginals with the Farlie–Gumbel–Morgenstern (FGM) copula under a unified hybrid censoring (UHC) scheme introducing UHC for bivariate lifetime models for the first time ...
Ehab M. Almetwally
doaj   +2 more sources

Developing New Bivariate Distributions With Advanced Estimation Methods for Interdisciplinary Data Analysis

Journal of Mathematics
This paper proposes a novel bivariate odd beta prime Fréchet (BOBPF) distribution constructed through the application of the Farlie–Gumbel–Morgenstern (FGM) copula function.
Aliyu Ismail Ishaq, Ahmad Abubakar Suleiman, Hana N. Alqifari, Amani Almohaimeed, Hanita Daud, Sani I. Abba   +5 more
doaj   +2 more sources

Developing prediction models to estimate the risk of two survival outcomes both occurring: A comparison of techniques. [PDF]

Stat Med, 2023
Introduction This study considers the prediction of the time until two survival outcomes have both occurred. We compared a variety of analytical methods motivated by a typical clinical problem of multimorbidity prognosis. Methods We considered five methods: product (multiply marginal risks), dual‐outcome (directly model the time until both events occur)
Pate A, Sperrin M, Riley RD, Sergeant JC, Van Staa T, Peek N, Mamas MA, Lip GYH, O'Flaherty M, Buchan I, Martin GP.   +10 more
europepmc   +2 more sources

Bivariate Copula-Based Regression for Joint Modeling of Healthcare Visits. [PDF]

Health Econ
ABSTRACT Doctor and non‐doctor visit frequencies are key indicators of healthcare access, utilization and individual health‐seeking behavior. While doctor visits reflect engagement with formal medical services, non‐doctor visits, such as to nurses, physiotherapists or alternative providers, offer insights into patient preferences and system ...
Marra G, Radice R.
europepmc   +2 more sources

Copula‐based joint distribution analysis of wind speed and wind direction: Wind energy development for Hong Kong

Wind Energy, Volume 26, Issue 9, Page 900-922, September 2023., 2023
Abstract Accurate and reliable assessment of wind energy potential has important implication to the wind energy industry. Most previous studies on wind energy assessment focused solely on wind speed, whereas the dependence of wind energy on wind direction was much less considered and documented.
Shiji Huang, Qiusheng Li, Zhenru Shu, Pak Wai Chan   +3 more
wiley   +1 more source

A Copula-based Maintenance Modeling for Parallel Systems with Non-self Announcing Failures and Dependent Components [PDF]

International Journal of Supply and Operations Management, 2019
Based on a copula function this paper addresses a maintenance scheduling problem for parallel systems whose components are dependent and their failures are detected only by inspections. To carry out preventive maintenance actions, the decision process is
Reza Ahmadi
doaj   +1 more source

A flexible copula regression model with Bernoulli and Tweedie margins for estimating the effect of spending on mental health

Health Economics, Volume 32, Issue 6, Page 1305-1322, June 2023., 2023
Abstract We develop a flexible two‐equation copula model to address endogeneity of medical expenditures in a distribution regression for health. The expenditure margin uses the compound gamma distribution, a special case of the Tweedie family of distributions, to account for a spike at zero and a highly skewed continuous part.
Giampiero Marra, Matteo Fasiolo, Rosalba Radice, Rainer Winkelmann   +3 more
wiley   +1 more source

Weighted Extropy for Concomitants of Upper k‐Record Values Based on Huang–Kotz Morgenstern of Bivariate Distribution

Journal of Mathematics, Volume 2023, Issue 1, 2023., 2023
In this paper, the marginal distribution of concomitants of k−record values (CKR) based on the Huang–Kotz Farlie–Gumbel–Morgenstern (HK‐FGM) family of bivariate distributions is derived. In addition, we obtained the joint distribution of CKR for this family.
M. Nagy, Yusra A. Tashkandy, Yusuf Pandir   +2 more
wiley   +1 more source

Valuing Equity‐Linked Death Benefits on Multiple Life with Time until Death following a Kn Distribution

Journal of Applied Mathematics, Volume 2023, Issue 1, 2023., 2023
The purpose of this paper is to investigate the valuation of equity‐linked death benefit contracts and the multiple life insurance on two heads based on a joint survival model. Using the exponential Wiener process assumption for the stock price process and a Kn distribution for the time until death, we provide explicit formulas for the expectation of ...
Franck Adékambi, Essomanda Konzou, Tudor Barbu   +2 more
wiley   +1 more source

Valuation of Equity-Linked Death Benefits on Two Lives with Dependence

Risks, 2023
The purpose of this paper is to investigate equity-linked death benefits for joint alive and last survivor individuals. Utilizing Farlie–Gumbel–Morgenstern (FGM) type dependency modeling framework, we first analyze the joint distribution of the couple ...
Kokou Essiomle, Franck Adékambi
doaj   +1 more source