Regularized Variational Estimation for Exploratory Item Factor Analysis

April E. Cho, Jiaying Xiao, Chun Wang () and Gongjun Xu ()
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April E. Cho: University of Michigan
Jiaying Xiao: University of Washington
Chun Wang: University of Washington
Gongjun Xu: University of Michigan

Psychometrika, 2024, vol. 89, issue 1, No 14, 347-375

Abstract: Abstract Item factor analysis (IFA), also known as Multidimensional Item Response Theory (MIRT), is a general framework for specifying the functional relationship between respondents’ multiple latent traits and their responses to assessment items. The key element in MIRT is the relationship between the items and the latent traits, so-called item factor loading structure. The correct specification of this loading structure is crucial for accurate calibration of item parameters and recovery of individual latent traits. This paper proposes a regularized Gaussian Variational Expectation Maximization (GVEM) algorithm to efficiently infer item factor loading structure directly from data. The main idea is to impose an adaptive $$L_1$$ L 1 -type penalty to the variational lower bound of the likelihood to shrink certain loadings to 0. This new algorithm takes advantage of the computational efficiency of GVEM algorithm and is suitable for high-dimensional MIRT applications. Simulation studies show that the proposed method accurately recovers the loading structure and is computationally efficient. The new method is also illustrated using the National Education Longitudinal Study of 1988 (NELS:88) mathematics and science assessment data.

Keywords: latent variable selection; multidimensional item response theory; variational inference; expectation-maximization; lasso; adaptive lasso (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11336-022-09874-6

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