Results 21 to 30 of about 448 (165)
Defects and transformations of quasi-copulas [PDF]
Kybernetika, 2017 Six different functions measuring the defect of a quasi-copula, i. e., how far away it is from a copula, are discussed. This is done by means of extremal non-positive volumes of specific rectangles (in a way that a zero defect characterizes copulas). Based on these defect functions, six transformations of quasi-copulas are investigated which give rise ...
Michal Dibala +3 more
openaire +1 more source
Biconic semi-copulas with a given section [PDF]
, 2013 Inspired by the notion of biconic semi-copulas, we introduce biconic semi-copulas with a given section. Such semi-copulas are constructed by linear interpolation on segments connecting the graph of a continuous and decreasing function to the points (0, 0)
De Baets, Bernard +3 more
core +2 more sources
Sklar's theorem in an imprecise setting [PDF]
, 2015 Sklar's theorem is an important tool that connects bidimensional distribution functions with their marginals by means of a copula. When there is imprecision about the marginals, we can model the available information by means of p-boxes, that are pairs ...
Miranda, Enrique +3 more
core +2 more sources
Proceedings of the 8th conference of the European Society for Fuzzy Logic and Technology, 2013 In our contribution we discuss the power stability of 1-Lipschitz binary aggregation functions. The main result is the characterization of power stable quasi-copulas by means of their dependence functions. The notions are illustrated by examples.
Radko Mesiar, Anna Kolesarova
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Dependence Modeling, 2013 Nelsen et al. [20] find bounds for bivariate distribution functions when there are constraints on the values of its quartiles. Tankov [25] generalizes this work by giving explicit expressions for the best upper and lower bounds for a bivariate copula ...
Bernard Carole +3 more
doaj +1 more source
Extreme values of the mass distribution associated with a tetravariate quasi-copula [PDF]
, 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 ...
Úbeda Flores, Manuel
core +1 more source
Intermediate classes between quasi-copulas and copulas in higher dimensions [PDF]
, 2017 Arias García, José de Jésus +3 more
core +2 more sources
Final solution to the problem of relating a true copula to an imprecise copula
, 2019 In this paper we solve in the negative the problem proposed in this journal (I. Montes et al., Sklar's theorem in an imprecise setting, Fuzzy Sets and Systems, 278 (2015), 48-66) whether an order interval defined by an imprecise copula contains a copula.
Omladič, Matjaž, Stopar, Nik
core +1 more source
The Study of Turn-taking Processes through Focus on Form and Focus on Forms Instructions: Incidental Grammar Acquisition [PDF]
Journal of Modern Research in English Language Studies, 2016 The present study aimed at examining whether the turn-taking processes in focus on form and focus on forms teaching contexts were similar or different. Turn-taking refers to ‘how each of the interlocutors in an interaction contributes to the conversation’
Hossein Arabgary, Siros Izadpanah
doaj
A new family of trivariate proper quasi-copulas [PDF]
, 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
Úbeda-Flores, Manuel
core +1 more source