A Matrix-free Likelihood Method for Exploratory Factor Analysis of High-dimensional Gaussian Data.
A Matrix-free Likelihood Method for Exploratory Factor Analysis of High-dimensional Gaussian Data.
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DOI:
10.1080/10618600.2019.1704296
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Maitra R
中科院分区:
文献类型:
--
作者:
Dai F;Dutta S;Maitra R
This paper proposes a novel profile likelihood method for estimating the covariance parameters in exploratory factor analysis of high-dimensional Gaussian datasets with fewer observations than number of variables. An implicitly restarted Lanczos algorithm and a limited-memory quasi-Newton method are implemented to develop a matrix-free framework for likelihood maximization. Simulation results show that our method is substantially faster than the expectation-maximization solution without sacrificing accuracy. Our method is applied to fit factor models on data from suicide attempters, suicide ideators and a control group.
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