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arXiv 2302.14529math.STmath.PRstat.MLstat.TH
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时变参数下的最大似然估计

Maximum Likelihood With a Time Varying Parameter

Alberto Lanconelli, Christopher S. A. Lauria

摘要:

我们考虑跟踪一个未知的时变参数的独立观测序列的概率演化特征的问题。为此,我们提出了一种基于随机梯度下降的递归方案,其中观测值的对数似然函数充当时变增益函数。我们证明了均方收敛误差在一个合适的邻居的未知的时变参数,并说明了我们的研究结果的细节的情况下,数据产生的分布属于指数家庭。

英文摘要:

We consider the problem of tracking an unknown time varying parameter that characterizes the probabilistic evolution of a sequence of independent observations. To this aim, we propose a stochastic gradient descent-based recursive scheme in which the log-likelihood of the observations acts as time varying gain function. We prove convergence in mean-square error in a suitable neighbourhood of the unknown time varying parameter and illustrate the details of our findings in the case where data are generated from distributions belonging to the exponential family.

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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