Bayesian shrinkage approaches to unbalanced problems of estimation and prediction on the basis of negative multinomial samples
Bayesian shrinkage approaches to unbalanced problems of estimation and prediction on the basis of negative multinomial samples
复制标题
贝叶斯收缩法解决基于负多项样本的估计和预测不平衡问题
DOI:
10.1007/s42081-021-00141-z
复制
发表时间:
2021
影响因子:
1.3
通讯作者:
Hamura Yasuyuki
中科院分区:
文献类型:
--
作者:
Yoneda Naru;Saita Yusuke;Nomura Takanori;Hamura Yasuyuki
In this paper, we treat estimation and prediction problems where negative multinomial variables are observed and, in particular, consider unbalanced settings. First, the problem of estimating multiple negative multinomial parameter vectors under the standardized squared error loss is treated and a new empirical Bayes estimator which dominates the uniformly minimum variance unbiased (UMVU) estimator under suitable conditions is derived. Next, we consider estimation of the joint predictive density of several multinomial tables under the Kullback–Leibler divergence and obtain a sufficient condition under which the Bayesian predictive density with respect to a hierarchical shrinkage prior dominates the Bayesian predictive density with respect to the Jeffreys prior. Finally, our proposed Bayesian estimator and predictive density give risk improvements in simulations and our methods are applied to real data resulting from the inverse sampling method.
登录
查看更多内容
影响因子:
1.6
作者:
M. Ghosh;A. Parsian
通讯作者:
A. Parsian
影响因子:
1
作者:
Kam
通讯作者:
Kam
影响因子:
3.7
作者:
Kam
通讯作者:
Kam
影响因子:
0.8
作者:
Robert, CP
通讯作者:
Robert, CP
影响因子:
4.5
作者:
M. Ghosh;J. T. Hwang;Kam
通讯作者:
Kam