Bayesian spline smoothing with ambiguous penalties
Bayesian spline smoothing with ambiguous penalties
复制标题
具有不明确惩罚的贝叶斯样条平滑
DOI:
10.1002/cjs.11655
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Zhong, Wenxuan
中科院分区:
文献类型:
--
作者:
Zhang, Xinlian;Datta, Gauri S.;Ma, Ping;Zhong, Wenxuan
A popular method for flexible function estimation in nonparametric models is the smoothing spline. When applying the smoothing spline method, the nonparametric function is estimated via penalized least squares, where the penalty imposes a soft constraint on the function to be estimated. The specification of the penalty functional is usually based on a set of assumptions about the function. Choosing a reasonable penalty function is the key to the success of the smoothing spline method. In practice, there may exist multiple sets of widely accepted assumptions, leading to different penalties, which then yield different estimates. We refer to this problem as the problem of ambiguous penalties. Neglecting the underlying ambiguity and proceeding to the model with one of the candidate penalties may produce misleading results. In this article, we adopt a Bayesian perspective and propose a fully Bayesian approach that takes into consideration all the penalties as well as the ambiguity in choosing them. We also propose a sampling algorithm for drawing samples from the posterior distribution. Data analysis based on simulated and real‐world examples is used to demonstrate the efficiency of our proposed method.
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影响因子:
2.1
作者:
Luis Tenorio;Fredrik Andersson;M. V. Hoop;Ping Ma
通讯作者:
Ping Ma
影响因子:
2.7
作者:
G. Tiao;A. Zellner
通讯作者:
A. Zellner
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Y. Yue;F. Lindgren
通讯作者:
F. Lindgren
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
Chong Gu
通讯作者:
Chong Gu
影响因子:
6.8
作者:
AKAIKE, H
通讯作者:
AKAIKE, H