Simultaneous Inference For The Mean Function Based on Dense Functional Data.

Simultaneous Inference For The Mean Function Based on Dense Functional Data.
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DOI:
10.1080/10485252.2011.638071
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发表时间:
2012-06-01
影响因子:
1.2
通讯作者:
Todem D
Todem D
中科院分区:
数学4区
文献类型:
--
作者:
Cao G;Yang L;Todem D

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提出了一种用于稠密函数数据的均值函数的多项式样条估计器以及渐近正确的同时置信带。此外,样条估计器及其伴随的置信带享有预言机效率,因为它们渐近相同,就好像所有随机轨迹都被完全观察到且没有错误一样。置信带还扩展到两个函数数据群体的均值函数的差异。仿真实验提供了强有力的证据,证实了渐近理论,同时计算效率很高。通过分析近红外光谱数据来说明置信带过程。
A polynomial spline estimator is proposed for the mean function of dense functional data together with a simultaneous confidence band which is asymptotically correct. In addition, the spline estimator and its accompanying confidence band enjoy oracle efficiency in the sense that they are asymptotically the same as if all random trajectories are observed entirely and without errors. The confidence band is also extended to the difference of mean functions of two populations of functional data. Simulation experiments provide strong evidence that corroborates the asymptotic theory while computing is efficient. The confidence band procedure is illustrated by analyzing the near infrared spectroscopy data.
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