Estimation of the Common Mean from Heterogeneous Normal Observations with Unknown Variances
未知方差的异质正态观测之共同均值估计AI 解读 ↓
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Summary To determine the common mean of heterogeneous normal observations, the Bayes procedures and the invariant maximum likelihood estimators of the weights forming the weighted means statistic are obtained when there are no variance estimates. The Bayes statistic is based on the reference, Geisser–Cornfield prior distribution which makes the posterior (discrete) distribution of the mean to be supported by the observed data with probabilities determined via the geometric means of the distances between data points. The maximum likelihood estimator coincides with the observation which has the maximal posterior probability. These procedures can be useful when measurement uncertainties are not reported or are misspecified.