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arXiv 0708.2177math.STstat.TH
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单调响应模型的似然推理

Likelihood based inference for monotone response models

Moulinath Banerjee

摘要:

研究了一类单调函数的逐点非参数估计问题的最大似然估计和似然比统计量的性质。这类问题从根本上不同于通常的参数或半参数的情况下,在一个点的单调函数的极大似然估计收敛到真理率$n^{1/3}$(比通常的$\sqrt{n}$率慢)与非高斯极限分布。基于似然估计的单调函数的框架开发和极限定理描述的MLE和似然比统计量的行为建立。特别是,似然比统计量被发现是渐近枢轴的极限分布,不再是$χ^2$,但可以明确地表征在布朗运动的功能。主要结果的应用和潜在的扩展进行了讨论。

英文摘要:

The behavior of maximum likelihood estimates (MLEs) and the likelihood ratio statistic in a family of problems involving pointwise nonparametric estimation of a monotone function is studied. This class of problems differs radically from the usual parametric or semiparametric situations in that the MLE of the monotone function at a point converges to the truth at rate $n^{1/3}$ (slower than the usual $\sqrt{n}$ rate) with a non-Gaussian limit distribution. A framework for likelihood based estimation of monotone functions is developed and limit theorems describing the behavior of the MLEs and the likelihood ratio statistic are established. In particular, the likelihood ratio statistic is found to be asymptotically pivotal with a limit distribution that is no longer $χ^2$ but can be explicitly characterized in terms of a functional of Brownian motion. Applications of the main results are presented and potential extensions discussed.

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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