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- W2056501810 abstract "Assume that $X_1, cdots, X_p$ are independent random observations having discrete exponential densities $rho_i(theta_i)t_i(x_i)theta^{xi}_i, i = 1, cdots, p$ respectively. A general technique of improving upon the uniform minimum variance unbiased estimator (UMVUE) of $(theta_1, cdots, theta_p)$ is developed under possibly weighted squared error loss functions. It is shown that improved estimators can be constructed by solving a difference inequality. Typical difference inequalities of a fairly general type are presented and solved. When specialized to Poisson and Negative binomial cases, broad classes of estimators are given that dominate the UMVUE. These results unify many known results in this rapidly diverging field, and some of them are new (especially those related to Negative Binomial distributions). Improved estimators are also obtained for the problems in which some of the observations are from Poisson families and some from Negative Binomial families. For sum of squared errors loss, estimators which dominate the UMVUE in the discrete exponential families are also given explicitly." @default.
- W2056501810 created "2016-06-24" @default.
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- W2056501810 date "1982-09-01" @default.
- W2056501810 modified "2023-10-02" @default.
- W2056501810 title "Improving Upon Standard Estimators in Discrete Exponential Families with Applications to Poisson and Negative Binomial Cases" @default.
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- W2056501810 doi "https://doi.org/10.1214/aos/1176345876" @default.
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