Wang Wenxiang. A Necessary Condition of Admissibility of Variance-component Nonnegative Quadratic Estimators[J]. Geomatics and Information Science of Wuhan University, 1997, 22(2): 184-186.
Citation:
Wang Wenxiang. A Necessary Condition of Admissibility of Variance-component Nonnegative Quadratic Estimators[J]. Geomatics and Information Science of Wuhan University, 1997, 22(2): 184-186.
Wang Wenxiang. A Necessary Condition of Admissibility of Variance-component Nonnegative Quadratic Estimators[J]. Geomatics and Information Science of Wuhan University, 1997, 22(2): 184-186.
Citation:
Wang Wenxiang. A Necessary Condition of Admissibility of Variance-component Nonnegative Quadratic Estimators[J]. Geomatics and Information Science of Wuhan University, 1997, 22(2): 184-186.
A Necessary Condition of Admissibility of Variance-component Nonnegative Quadratic Estimators
Considering a variance-component model Y=Xβ+U1ε1+U2ε2+…+UNεN,we give a necessary condition for the nonnegative quadratic estimator Y'AY for to be admissible under some conditions.
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