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math.ST2025
Maximal signed volume for (multivariate) supermodular quasi-copulas
Matjaž Omladič, Martin Vuk, Aljaž Zalar
Copulas are the primary tool for dependence modeling in statistics, and quasi-copulas are their essential companions. The latter appear, say, as infima or suprema of sets of copula…
math.ST2024
Extreme values of the mass distribution associated with -quasi-copulas via linear programming
Matej Belšak, Matjaž Omladič, Martin Vuk +1
The recent survey published in Fuzzy Sets and Systems nicknamed ``Hitchhiker's Guide'' has raised the rating of quasi-copula problems in the dependence modeling community in spite…