A hybrid method for density power divergence minimization with application to robust univariate location and scale estimation
A hybrid method for density power divergence minimization with application to robust univariate location and scale estimation
复制标题
密度功率散度最小化的混合方法,应用于稳健的单变量位置和尺度估计
DOI:
10.1080/03610926.2023.2209347
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Pokojovy, Michael
中科院分区:
文献类型:
--
作者:
Anum, Andrews T.;Pokojovy, Michael
We develop a new globally convergent optimization method for solving a constrained minimization problem underlying the minimum density power divergence estimator for univariate Gaussian data in the presence of outliers. Our hybrid procedure combines classical Newton’s method with a gradient descent iteration equipped with a step control mechanism based on Armijo’s rule to ensure global convergence. Extensive simulations comparing the resulting estimation procedure with the more prominent robust competitor, Minimum Covariance Determinant (MCD) estimator, across a wide range of breakdown point values suggest improved efficiency of our method. Application to estimation and inference for a real-world dataset is also given.
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DOI:
10.1080/01621459.1994.10476867
发表时间:
1994-12-01
影响因子:
3.7
作者:
CROUX, C;ROUSSEEUW, PJ;HOSSJER, O
通讯作者:
HOSSJER, O
DOI:
10.1016/b978-0-12-386908-1.00037-9
发表时间:
2018-11
期刊:
Wiley Series in Probability and Statistics
影响因子:
--
作者:
Bruce E. Blaine
通讯作者:
Bruce E. Blaine
DOI:
--
发表时间:
2022
期刊:
International Conference Smart Data and Smart Cities
影响因子:
--
作者:
Michael Pokojovy;A. Anum
通讯作者:
A. Anum
影响因子:
4.5
作者:
J. Kent;David E. Tyler
通讯作者:
J. Kent;David E. Tyler
影响因子:
2.4
作者:
V. Maltsev;Michael Pokojovy
通讯作者:
Michael Pokojovy