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Improved point estimation for the Kumaraswamy distribution

机译:Kumaraswamy分布的改进点估计

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We develop nearly unbiased estimators for the Kumaraswamy distribution proposed by Kumaraswamy [Generalized probability density-function for double-bounded random-processes, J. Hydrol. 46 (1980), pp. 79-88], which has considerable attention in hydrology and related areas. We derive modified maximum-likelihood estimators that are bias-free to second order. As an alternative to the analytically bias-corrected estimators discussed, we consider a bias correction mechanism based on the parametric bootstrap. We conduct Monte Carlo simulations in order to investigate the performance of the corrected estimators. The numerical results show that the bias correction scheme yields nearly unbiased estimates.
机译:我们开发了由Kumaraswamy提出的Kumaraswamy分布的几乎无偏估计量[双界随机过程的广义概率密度函数,J。Hydrol。 46(1980),第79-88页],这在水文学及相关领域引起了极大的关注。我们推导了修正的最大似然估计量,该估计量对二阶无偏差。作为讨论的分析性偏差校正估计器的替代方案,我们考虑基于参数自举的偏差校正机制。为了进行校正后的估计量的性能研究,我们进行了蒙特卡洛模拟。数值结果表明,偏差校正方案产生几乎无偏差的估计。

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