Goodness of prediction fit
Goodness of prediction fit
复制标题
预测拟合优度
DOI:
10.1093/biomet/62.3.547
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发表时间:
1975
期刊:
影响因子:
2.7
通讯作者:
J. Aitchison
中科院分区:
文献类型:
--
作者:
J. Aitchison
SUMMARY Fitting a parametric model or estimating a parametric density function plays an important role in a number of statistical applications. Two widely-used methods, one replacing the unknown parameter by an efficient estimate and so termed estimative and the other using a mixture of the possible density functions and commonly termed predictive, are compared. On a general criterion of closeness of fit based on a discriminating information measure the predictive method is shown to be preferable. Explicit measures of the relative closeness of predictive and estimative fits are obtained for gamma and multinormal models.