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arXiv 1209.2669stat.MEmath.STstat.MLstat.TH
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不完全阵列变量观测的似然估计

Likelihood Estimation with Incomplete Array Variate Observations

Deniz Akdemir

摘要:

在处理以数组形式排列的高维数据时,缺失数据是一个重要的挑战。本文提出了由部分观测多向数据估计阵列变量正态概率模型参数的方法。本文提出的方法对多向数据的缺失数据填补、均值和协方差参数的估计是有用的。还定义了允许分离多向协方差效应的多向半参数混合效应模型,并推荐了一种有效的估计算法。我们提供模拟结果以及来自遗传学的真实数据来证明这些方法。

英文摘要:

Missing data is an important challenge when dealing with high dimensional data arranged in the form of an array. In this paper, we propose methods for estimation of the parameters of array variate normal probability model from partially observed multiway data. The methods developed here are useful for missing data imputation, estimation of mean and covariance parameters for multiway data. A multiway semi-parametric mixed effects model that allows separation of multiway covariance effects is also defined and an efficient algorithm for estimation is recommended. We provide simulation results along with real life data from genetics to demonstrate these methods.

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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