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arXiv 1302.2345math.STstat.TH
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非参数非独立区域有限平移混合

Non parametric finite translation mixtures with dependent regime

Elisabeth Gassiat, Judith Rousseau

摘要:

本文考虑非参数有限平移混合。我们证明了,只要定义两个连续潜变量的联合分布的矩阵是非奇异的,并且平移参数是不同的,模型的所有参数都是可识别的。在此假设下,我们提供了一个一致的估计的人口数量,翻译参数和分布的两个连续的潜变量,我们证明是渐近正态分布下温和的依赖性假设。我们提出了一个非参数估计的未知翻译密度。在潜变量形成一个马尔可夫链(隐马尔可夫模型)的情况下,我们证明了一个预言不等式,导致这样一个事实,即该估计是极小极大自适应的密度正则类。

英文摘要:

In this paper we consider non parametric finite translation mixtures. We prove that all the parameters of the model are identifiable as soon as the matrix that defines the joint distribution of two consecutive latent variables is non singular and the translation parameters are distinct. Under this assumption, we provide a consistent estimator of the number of populations, of the translation parameters and of the distribution of two consecutive latent variables, which we prove to be asymptotically normally distributed under mild dependency assumptions. We propose a non parametric estimator of the unknown translated density. In case the latent variables form a Markov chain (Hidden Markov models), we prove an oracle inequality leading to the fact that this estimator is minimax adaptive over regularity classes of densities.

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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