Results 31 to 40 of about 87,023 (313)

Are copulas unimodal?

open access: yesJournal of Multivariate Analysis, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Radu Theodorescu, Ioan Cuculescu
openaire   +3 more sources

A Functional for Copulas and Quasi-Copulas [PDF]

open access: yesISRN Probability and Statistics, 2012
We recall and study some properties of a known functional operating on the set of n-copulas and determine conditions under such functional is well defined on the set of n-quasi-copulas. As a consequence, new families of copulas and quasi-copulas are defined, illustrating our results with several examples.
openaire   +1 more source

Extreme semilinear copulas

open access: yesFuzzy Sets and Systems, 2022
We study the extreme points (in the Krein-Milman sense) of the class of semilinear copulas and provide their characterization. Related results into the more general setting of conjunctive aggregation functions (i.e, semi--copulas and quasi--copulas) are also presented.
Durante F.   +2 more
openaire   +6 more sources

A Novel Nonparametric Estimation for Conditional Copula Functions Based on Bayes Theorem

open access: yesIEEE Access, 2019
Conditional copula which measures the conditional dependence among variables, possesses a special position in copula field. In this article, based on Bayes theorem, we derive three kinds of conditional copula functions as the product of the corresponding
Xinyao Li, Weihong Zhang, Liangli He
doaj   +1 more source

On copula moment: empirical likelihood based estimation method [PDF]

open access: yesArab Journal of Mathematical Sciences, 2022
Purpose – In this paper, the authors applied the empirical likelihood method, which was originally proposed by Owen, to the copula moment based estimation methods to take advantage of its properties, effectiveness, flexibility and reliability of the ...
Jihane Abdelli, Brahim Brahimi
doaj   +1 more source

Flood routing via a copula-based approach

open access: yesHydrology Research, 2021
Floods are among the most common natural disasters that if not controlled may cause severe damage and high costs. Flood control and management can be done using structural measures that should be designed based on the flood design studies. The simulation
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

Bayesian Model Choice of Grouped t-copula [PDF]

open access: yes, 2011
One of the most popular copulas for modeling dependence structures is t-copula. Recently the grouped t-copula was generalized to allow each group to have one member only, so that a priori grouping is not required and the dependence modeling is more ...
Luo, Xiaolin, Shevchenko, Pavel V.
core   +1 more source

Snow-melt flood frequency analysis by means of copula based 2D probability distributions for the Narew River in Poland

open access: yesJournal of Hydrology: Regional Studies, 2016
Study region: Narew River in Northeastern Poland. Study focus: Three methods for frequency analysis of snowmelt floods were compared. Two dimensional (2D) normal distribution and copula-based 2D probability distributions were applied to statistically ...
Bogdan Ozga-Zielinski   +4 more
doaj   +1 more source

Prediksi Ukuran Risiko Agregat Klaim Berbasis Copula pada Model Autoregressive Conditional Amount (ACA)

open access: yesJurnal Matematika Integratif, 2020
Industri asuransi merupakan industri yang berkaitan langsung dengan risiko. Risiko yang terjadi diakibatkan oleh besar klaim yang harus dibayarkan perusahaan asuransi.
Dedy Irawan Prihandoko   +1 more
doaj   +1 more source

Shuffles of copulas

open access: yesJournal of Mathematical Analysis and Applications, 2009
AbstractWe show that every copula that is a shuffle of Min is a special push-forward of the doubly stochastic measure induced by the copula M. This fact allows to generalize the notion of shuffle by replacing the measure induced by M with an arbitrary doubly stochastic measure, and, hence, the copula M by any copula C.
DURANTE, FABRIZIO   +2 more
openaire   +3 more sources

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