Results 21 to 30 of about 2,188,856 (302)

Tail dependence and heavy tailedness in extreme risks

open access: yesInsurance, Mathematics & Economics, 2021
In the modeling of multivariate extreme risks, the tail dependence and the heavy tailedness are the two key factors. Heavy tailedness are usually defined through the regular variation.
Liuyan Ji, K. S. Tan, Fan Yang
semanticscholar   +1 more source

Tail dependence under sample failures [PDF]

open access: yesТеория вероятностей и ее применения, 2019
При сборе данных иногда встречаются ситуации, препятствующие ему, что приводит к пропускам в данных. Это может оказать влияние на последующие статистические выводы, в особенности, если исследование касается экстремальных значений, информация о которых всегда более скудна.
Ferreira, Marta Susana, Ferreira, H.
openaire   +3 more sources

Nonlinear tail dependence in cryptocurrency-stock market returns: The role of Bitcoin futures

open access: yes, 2021
We investigate the median and tail dependence between cryptocurrency and stock market returns of BRICS and Developed countries using a newly developed nonparametric cumulative measure of dependence over the period January 4, 2016 – December 31, 2019 as ...
Amine Lahiani   +2 more
semanticscholar   +1 more source

On Tail Dependence and Multifractality

open access: yesMathematics, 2020
We study whether, and if yes then how, a varying auto-correlation structure in different parts of distributions is reflected in the multifractal properties of a dynamic process.
Krenar Avdulaj, Ladislav Kristoufek
doaj   +1 more source

A geometric investigation into the tail dependence of vine copulas [PDF]

open access: yesJournal of Multivariate Analysis, 2020
Vine copulas are a type of multivariate dependence model, composed of a collection of bivariate copulas that are combined according to a specific underlying graphical structure.
Emma S. Simpson, J. Wadsworth, J. Tawn
semanticscholar   +1 more source

Correlation analysis of financial assets based on asymmetric copula

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
Based on the asymmetric copula function, this paper analyzes the static and dynamic correlation between Shanghai Composite Index and Shenzhen Composite Index.
Xia Li, Bing Hou
doaj   +1 more source

Copula-Based Assessment of Co-Movement and Tail Dependence Structure Among Major Trading Foreign Currencies in Ghana

open access: yesRisks, 2020
This paper examines the joint movement and tail dependence structure between the pair of foreign exchange rates (EUR, USD and GBP) against the GHS, using daily exchange rates data expressed in GHS per unit of foreign currencies (EUR, USD and GBP) between
Prince Osei Mensah, Anokye M. Adam
doaj   +1 more source

Assessing the dependence structure between oceanographic, fluvial, and pluvial flooding drivers along the United States coastline [PDF]

open access: yesHydrology and Earth System Sciences, 2021
Flooding is of particular concern in low-lying coastal zones that are prone to flooding impacts from multiple drivers, such as oceanographic (storm surge and wave), fluvial (excessive river discharge), and/or pluvial (surface runoff).
A. A. Nasr   +4 more
doaj   +1 more source

General Multivariate Dependence using Associated Copulas

open access: yesRevstat Statistical Journal, 2016
This paper studies the general multivariate dependence and tail dependence of a random vector. We analyse the dependence of variables going up or down, covering the 2 d orthants of dimension d and accounting for non-positive dependence.
Yuri Salazar Flores
doaj   +1 more source

Stable tail dependence functions – some basic properties

open access: yesDependence Modeling, 2022
We prove some important properties of the extremal coefficients of a stable tail dependence function (“STDF”) and characterise logistic and some related STDFs.
Ressel Paul
doaj   +1 more source

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