Minimax estimation of linear functionals over nonconvex parameter spaces

Minimax estimation of linear functionals over nonconvex parameter spaces
复制标题

非凸参数空间上线性泛函的极小极大估计

DOI:
--
复制
发表时间:
2004
期刊:
影响因子:
--
通讯作者:
T. Cai
T. Cai
中科院分区:
--
文献类型:
--
作者:
Mark G. Low;T. Cai

文献摘要

被引文献

相似文献

将估计线性泛函的极大极小理论推广到凸参数空间的有限并的情形。极小极大风险的上界和下界仍然可以用连续模来描述。然而,与凸参数空间理论相比,速率最优过程常常被要求是非线性的。给出了这种非线性过程的构造方法。本文的研究结果对适应理论具有重要的应用价值。
The minimax theory for estimating linear functionals is extended to the case of a finite union of convex parameter spaces. Upper and lower bounds for the minimax risk can still be described in terms of a modulus of continuity. However in contrast to the theory for convex parameter spaces rate optimal procedures are often required to be nonlinear. A construction of such nonlinear procedures is given. The results developed in this paper have important applications to the theory of adaptation.