Asymptotic Normality of Posterior Distributions
Asymptotic Normality of Posterior Distributions
复制标题
后验分布的渐近正态性
DOI:
--
复制
发表时间:
1983
期刊:
影响因子:
--
通讯作者:
J. Hartigan
中科院分区:
文献类型:
--
作者:
J. Hartigan
Suppose X 1,..., X n are independent observations from P θ , θ ∈ R. Suppose that P θ has density f θ (x) with respect to some measure v. The maximum likelihood estimate of θ (or the value of θ that maximizes the density of the posterior probability relative to the prior probability), maximizing Π i=1 n f θ (X i ) is denoted by ( {at heta _n}) . As n → ∞, Fisher established that( {at heta _n})is asymptotically normal with mean θ 0 and variance (nI(θ 0))−1, where θ 0 is the true value of θ, and I(θ 0) is Fisher’s information— ({ - ({d^2}/d{heta ^2}){P_{{heta _0}}}[og {f_heta }(X)] _{heta = {heta _0}}}). The asymptotic normality requires a tedious list of regularity conditions, first promulgated by Wald.