A goodness-of-fit test based on Bézier curve estimation of Kendall distribution

OpenAlex İngilizce

In this study, we propose an estimation method for the Archimedean family of the copula in a nonparametric setting. A Bézier curve approach based on Bernstein polynomials is used to estimate the Kendall distribution function. Also, a new goodness-of-fit test based on Cramér–von Mises statistic is proposed using the Bézier curve estimator. A Monte Carlo study is also conducted to measure the performance of the proposed estimator and goodness-of-fit test. Two real data examples are also given. The simulation study and real data applications show that the Bézier curve estimator leads to satisfactory estimates of underlying copula and also has better results compared with the estimators based on empirical and Bernstein methods.