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arXiv 1902.01070math.STstat.TH
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一般状态空间下非参数平移隐马尔可夫模型的可辨识性与一致估计

Identifiability and consistent estimation of nonparametric translation hidden Markov models with general state space

Elisabeth Gassiat, Sylvain Le Corff, Luc Lehéricy

摘要:

本文考虑隐马尔可夫模型,其中观测值是位于一般状态空间中的潜在状态和一些分布未知的独立噪声之和。结果表明,这些完全非参数的翻译模型是可识别的潜变量的分布和噪声的分布,主要是一个轻尾假设的潜变量。提出了两种非参数估计方法,并证明了在弱收敛拓扑下,相应的估计量是相合的。这些结果与数值实验说明。

英文摘要:

This paper considers hidden Markov models where the observations are given as the sum of a latent state which lies in a general state space and some independent noise with unknown distribution. It is shown that these fully nonparametric translation models are identifiable with respect to both the distribution of the latent variables and the distribution of the noise, under mostly a light tail assumption on the latent variables. Two nonparametric estimation methods are proposed and we prove that the corresponding estimators are consistent for the weak convergence topology. These results are illustrated with numerical experiments.

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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