Asymptotic cumulants of the minimum phi-divergence estimator for categorical data under possible model misspecification.
Asymptotic cumulants of the minimum phi-divergence estimator for categorical data under possible model misspecification.
复制标题
在可能的模型错误指定下,分类数据的最小 phi 散度估计量的渐近累积量。
DOI:
10.1080/03610926.2019.1576888
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
H.
中科院分区:
文献类型:
--
作者:
Ogasawara;H.
The asymptotic cumulants of the minimum phi-divergence estimators of the parameters in a model for categorical data are obtained up to the fourth order with the higher-order asymptotic variance under possible model misspecification. The corresponding asymptotic cumulants up to the third order for the studentized minimum phi-divergence estimator are also derived. These asymptotic cumulants, when a model is misspecified, depend on the form of the phi-divergence. Numerical illustrations with simulations are given for typical cases of the phi-divergence, where the maximum likelihood estimator does not necessarily give best results. Real data examples are shown using log-linear models for contingency tables.