Results 1 to 10 of about 583 (205)

Multivariate copulas, quasi-copulas and lattices [PDF]

open access: greenStatistics & Probability Letters, 2011
We investigate some properties of the partially ordered sets of multivariate copulas and quasi-copulas. Whereas the set of bivariate quasi-copulas is a complete lattice, which is order-isomorphic to the Dedekind-MacNeille completion of the set of bivariate copulas, we show that this is not the case in higher dimensions.
Juan Fernández Sánchez   +2 more
openalex   +5 more sources

Extreme values of the mass distribution associated with a tetravariate quasi-copula [PDF]

open access: bronze, 2023
In this note we study the extremes of the mass distribution associated with a tetravariate quasi-copula and compare our results with the bi- and trivariate cases, showing the important differences between ...
Manuel Úbeda-Flores
openalex   +4 more sources

A new family of trivariate proper quasi-copulas [PDF]

open access: green, 2007
summary:In this paper, we provide a new family of trivariate proper quasi-copulas. As an application, we show that $W^{3}$ – the best-possible lower bound for the set of trivariate quasi-copulas (and copulas) – is the limit member of this family, showing
Manuel Úbeda-Flores
openalex   +3 more sources

Extreme mass distributions for quasi-copulas [PDF]

open access: greenFuzzy Sets and Systems
22 pages, 4 ...
Matjaž Omladič   +2 more
openalex   +3 more sources

Extending multivariate sub-quasi-copulas

open access: bronzeJournal of Mathematical Analysis and Applications
In this paper, we introduce patchwork constructions for multivariate quasi-copulas. These results appear to be new since the kind of approach has been limited to either copulas or only bivariate quasi-copulas so far. It seems that the multivariate case is much more involved since we are able to prove that some of the known methods of bivariate ...
Damjana Kokol Bukovšek   +3 more
openalex   +5 more sources

Freedom in constructing quasi-copulas vs. copulas [PDF]

open access: greenFuzzy Sets and Systems
26 pages, 5 figures, accepted in Fuzzy Sets and ...
Matjaž Omladič, Nik Stopar
openalex   +3 more sources

Fuzzy implicators related to (quasi-)copulas [PDF]

open access: goldProceedings of the 2019 Conference of the International Fuzzy Systems Association and the European Society for Fuzzy Logic and Technology (EUSFLAT 2019), 2019
Anna Kolesárová, Radko Mesiar
openalex   +2 more sources

Fuzzy implications based on quasi-copula and fuzzy negations

open access: diamondJournal of Nonlinear Sciences and Applications, 2023
G. A. Souliotis   +2 more
openalex   +3 more sources

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