Abstract
In this paper we provide an extension of special parametric class of perturbations of an arbitrary copula (given in [3]) that represent a partial generalization of the FGM family of copulas for parameters from the unit interval. However the FGM family is defined for parameters from the interval \([-1,1]\). We present a construction of perturbations of an arbitrary copula also for parameters from the interval \([-1,0]\) so that together with the former family of perturbations of copulas we get a generalization of the FGM family for the whole interval \([-1,1]\). We also investigated the influence of the parameters of the introduced class of perturbations of copulas on several measures of dependence (Spearman’s rho, Blomqvist’s beta, Gini’s gamma, Kendall’s tau).
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Acknowledgement
This work was supported by Slovak Research and Development Agency under contracts No. APVV–14–0013 and by VEGA 1/0420/15.
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Komorník, J., Komorníková, M., Kalická, J. (2018). Families of Perturbation Copulas Generalizing the FGM Family and Their Relations to Dependence Measures. In: Torra, V., Mesiar, R., Baets, B. (eds) Aggregation Functions in Theory and in Practice. AGOP 2017. Advances in Intelligent Systems and Computing, vol 581. Springer, Cham. https://doi.org/10.1007/978-3-319-59306-7_6
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DOI: https://doi.org/10.1007/978-3-319-59306-7_6
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