4.6 Article

Nonparametric estimation of the measure of functional dependence

期刊

AIMS MATHEMATICS
卷 6, 期 12, 页码 13488-13502

出版社

AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/math.2021782

关键词

mutual complete dependence; beta kernel; functional dependence; monparametric estimation; copula

资金

  1. Education Department of Jiangxi Province [GJJ190253, GJJ190259]

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This paper introduces a new method for measuring functional dependence called MFD, which uses a beta kernel estimator. The proposed estimator is shown to be highly accurate in estimation through simulated examples and analysis of real data.
In this paper, we propose a beta kernel estimator to measure functional dependence (MFD). The MFD not only can measure the strength of linear or monotonic relationships, but it is also suitable for more complicated functional dependence. We derive the asymptotic distribution of the proposed estimator and then use several simulated examples to compare our estimator with the traditional measures. Our simulation results demonstrate that beta kernel provides high accuracy in estimation. A real data example is also given to illustrate one possible application of the new estimator.

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