Bayesian Nonparametric Estimation of the Median; Part II: Asymptotic Properties of the Estimates
Doss, Hani
Ann. Statist., Tome 13 (1985) no. 1, p. 1445-1464 / Harvested from Project Euclid
For data $\theta + \varepsilon_i, i = 1, \ldots, n$ where $\varepsilon_i$ are i.i.d. $\sim F$ with the median of $F$ equal to $0$ but $F$ otherwise unknown, it is desired to estimate $\theta$. In Doss (1985) priors are put on the pair $(F, \theta)$, the marginal posterior distribution of $\theta$ is computed, and the mean of the posterior is taken as the estimate of $\theta$. In the present paper a frequentist point of view is adopted. The consistency properties of the Bayes estimates computed in Doss (1985) are investigated when the prior on $F$ is of the "Dirichlet-type." Any $F$ whose median is 0 is in the support of these priors. It is shown that if the $\varepsilon_i$ are i.i.d. from a discrete distribution, then the Bayes estimates are consistent. However, if the distribution of the $\varepsilon_is$ is continuous, the Bayes estimates can be inconsistent.
Publié le : 1985-12-14
Classification:  Bayes estimator,  Dirichlet process prior,  posterior distribution,  consistency,  estimation of the median,  62A15,  62G05
@article{1176349747,
     author = {Doss, Hani},
     title = {Bayesian Nonparametric Estimation of the Median; Part II: Asymptotic Properties of the Estimates},
     journal = {Ann. Statist.},
     volume = {13},
     number = {1},
     year = {1985},
     pages = { 1445-1464},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1176349747}
}
Doss, Hani. Bayesian Nonparametric Estimation of the Median; Part II: Asymptotic Properties of the Estimates. Ann. Statist., Tome 13 (1985) no. 1, pp.  1445-1464. http://gdmltest.u-ga.fr/item/1176349747/