Results 71 to 80 of about 448 (165)
Discrete copulas and quasi-copulas
, 2022 The thesis gives a brief introduction to two dimensional copulas and related functions. Firstly, we present copulas, their usage and according history. Furthermore, in the text we include some examples and visual representations for this purpose. Copulas are cumulative distribution functions defined on the unit square with marginal distributions which ...
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Quasi-copulas as linear combinations of copulas
Fuzzy Sets and SystemsWe prove that every quasi-copula can be written as a uniformly converging infinite sum of multiples of copulas. Furthermore, we characterize those quasi-copulas which can be written as a finite sum of multiples of copulas, i.e., that are a linear combination of two copulas.
Gregor Dolinar, Bojan Kuzma, Nik Stopar
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Freedom in constructing quasi-copulas vs. copulas
Fuzzy Sets and Systems26 pages, 5 figures, accepted in Fuzzy Sets and ...
Matjaž Omladič, Nik Stopar
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Képi sémák az 'ül' kvázikopulák létrejöttének hátterében [PDF]
In the present paper, I investigate the meanings of the quasi-copula ’sit’ in European and non-European languages. Preliminary research suggests that languages can be grouped according to whether or not the quasi-copula verb 'sit' is used at all and, if ...
Sipos Mária
core
A study on the cardinality of some families of discrete operators through alternating sign matrices [PDF]
[eng] Determining the number of discrete operators has been a topic of interest for the scientific community since the introduction of these operators. This paper represents a further stage within this topic in the field of operators defined on a finite ...
Massanet, S. +2 more
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, 2019 We first review an approach that had been developed in the past years to introduce concepts of "bivariate ageing" for exchangeable lifetimes and to analyze mutual relations among stochastic dependence, univariate ageing, and bivariate ageing.
Nappo, Giovanna, Spizzichino, Fabio L.
core
A full scale Sklar's theorem in the imprecise setting
, 2020 In this paper we present a surprisingly general extension of the main result of a paper that appeared in this journal: I. Montes et al., Sklar's theorem in an imprecise setting, Fuzzy Sets and Systems, 278 (2015), 48--66.
Omladič, Matjaž, Stopar, Nik
core
Measuring re-identification risk using a synthetic estimator to enable data sharing. [PDF]
PLoS One, 2022 Jiang Y +4 more
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Factor Tree Copula Models for Item Response Data. [PDF]
Psychometrika, 2023 Kadhem SH, Nikoloulopoulos AK.
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Solution to an open problem about a transformation on the space of copulas
Dependence Modeling, 2014 Durante Fabrizio +2 more
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