Results 51 to 60 of about 1,401 (188)

On Construction of Bernstein-Bézier Type Bivariate Archimedean Copula

open access: yesRevstat Statistical Journal, 2022
In this paper, a new class of bivariate multi-parameter Archimedean copula based on Kendall distribution using Bernstein-Bézier polynomials is introduced. The new class copula has flexible dependence properties depending on the polynomial degree and the
Selim Orhun Susam , Burcu Hudaverdi
doaj   +1 more source

A Dynamic Model for Extreme Hourly Precipitation

open access: yesEnvironmetrics, Volume 37, Issue 3, April 2026.
ABSTRACT Despite the scarcity of comprehensive studies at a global scale, many regional analyses report increases in extreme hourly precipitation values. The growing interest in assessing trends in extreme hourly precipitation has outpaced the development of new statistical tools tailored to their features. Typical analyses employ Extreme Value Theory (
Debbie J. Dupuis   +2 more
wiley   +1 more source

On Unit-Burr Distorted Copulas

open access: yesAppliedMath
This paper introduces a new unit-Burr distortion function constructed via a transformation of the Burr random variable. The distortion can be applied to existing base copulas to create new copula families.
Fadal Abdullah A. Aldhufairi   +1 more
doaj   +1 more source

Bivariate Cox model and copulas

open access: yes, 2009
This paper introduces a new class of Cox models for dependent bivariate data. The impact of the covariate on the dependence of the variables is captured through the modification of their copula. Various classes of well known copulas are stable under the model (archimedean type and extreme value copulas), meaning that the role of the covariate acts in a
Achibi, Mohamed, Broniatowski, Michel
openaire   +3 more sources

Investigating How Learners' Attitudes Shape AI‐Supported Argumentative Writing Processes and Outcomes

open access: yesJournal of Computer Assisted Learning, Volume 42, Issue 2, April 2026.
ABSTRACT Background Artificial intelligence (AI), in particular, generative AI, plays an increasingly critical role in education. Studies have shown that learners' positive perception of generative AI‐assisted writing tools can benefit them in their writing processes and outcomes.
Sung‐Hee Jin, Ann Tai Choe
wiley   +1 more source

Synchronous-Asynchronous Encounter Probability Analysis of High-Low Runoff for Jinsha River, China, using Copulas*

open access: yesMATEC Web of Conferences, 2018
Synchronous-asynchronous encounter probability analysis of high-low runoff, which requires a description of the probabilistic properties of hydrological variables, is important in regional water resources management.
Jing CHEN, Shixiang GU, Tianli ZHANG
doaj   +1 more source

A method of moments to estimate bivariate survival functions: the copula approach

open access: yesStatistica, 2013
In this paper we discuss the problem on parametric and non parametric estimation of the distributions generated by the Marshall-Olkin copula. This copula comes from the Marshall-Olkin bivariate exponential distribution used in reliability analysis.
Silvia Angela Osmetti   +1 more
doaj   +1 more source

Projecting future climate change effects on the extreme hydrological drought events in the Weihe River basin, China [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
In this study, a framework to project the potential future climate change impacts on extreme hydrological drought events in the Weihe River basin in North China is presented.
F. Yuan   +9 more
doaj   +1 more source

Risk Times in Mission‐Oriented Systems

open access: yesQuality and Reliability Engineering International, Volume 42, Issue 3, Page 1380-1398, April 2026.
ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza   +2 more
wiley   +1 more source

Generación de tiempos de falla dependientes Weibull bivariados usando cópulas Generation of Weibull Bivariate Dependent Failure Times Using Copulas

open access: yesRevista Colombiana de Estadística, 2008
La distribución Weibull bivariada es muy importante en confiabilidad y en análisis de supervivencia. La dependencia para este tipo de problemas ha venido cobrando gran importancia en años recientes.
MARIO CÉSAR JARAMILLO   +3 more
doaj  

Home - About - Disclaimer - Privacy