Asymptotic Efficiency of Minimum Variance Unbiased Estimators
最小方差无偏估计量的渐近效率AI 解读 ↓
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最小方差无偏估计量的渐近效率AI 解读 ↓
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Consider a regular $p$-dimensional exponential family such that either the distributions are concentrated on a lattice or they have a component whose $k$-fold convolution has a bounded density with respect to Lebesgue measure. Then, if a parametric function has an unbiased estimator, the minimum variance unbiased estimators are asymptotically equivalent to the maximum likelihood estimators; and, hence, are asymptotically efficient. Examples are given to show that a condition like the above is needed to obtain the asymptotic equivalence.
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