Maximum likelihood estimator for the sub-fractional Brownian motion approximated by a random walk

被引:26
作者
Kuang, Nenghui [1 ,2 ]
Xie, Huantian [2 ,3 ]
机构
[1] Hunan Univ Sci & Technol, Sch Math & Comp Sci, Xiangtan 411201, Hunan, Peoples R China
[2] Wuhan Univ, Sch Math & Stat, Wuhan 430072, Peoples R China
[3] Linyi Univ, Sch Sci, Linyi 276005, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Maximum likelihood estimator; Sub-fractional Brownian motion; Random walk; PARAMETRIC-ESTIMATION; DRIVEN;
D O I
10.1007/s10463-013-0439-4
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
We estimate the drift parameter in a simple linear model driven by sub-fractional Brownian motion. We construct a maximum likelihood estimator (MLE) for the drift parameter by using a random walk approximation of the sub-fractional Brownian motion and study the asymptotic behaviors of the estimator. Simulations confirm the theoretical results and indicate superiority of the new proposed estimator.
引用
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页码:75 / 91
页数:17
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