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arXiv 1306.1438math.STstat.TH
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对数凹和s凹密度极大似然估计的全局收敛速度

Global Rates of Convergence of the MLEs of Log-concave and s-concave Densities

Charles R. Doss, Jon A. Wellner

摘要:

我们建立了全局收敛速度的最大似然估计(MLE)的对数凹和$s$凹密度$\mathbb{R}$。主要的发现是,当$-1 < s < \infty$(其中$s=0$对应于对数凹情形)时,Hellinger度量下的极大似然估计的收敛速率并不比$n^{-2/5}$差.我们还证明了对于具有$s < - 1$的$s$ -凹密度类,极大似然估计不存在.

英文摘要:

We establish global rates of convergence for the Maximum Likelihood Estimators (MLEs) of log-concave and $s$-concave densities on $\mathbb{R}$. The main finding is that the rate of convergence of the MLE in the Hellinger metric is no worse than $n^{-2/5}$ when $-1 < s < \infty$ where $s=0$ corresponds to the log-concave case. We also show that the MLE does not exist for the classes of $s$-concave densities with $s < - 1$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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