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Showing 1 to 2 of 2 for “"MMLE-EM"”.
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A comparison of traditional and IRT factor analysis.
This study investigated the item parameter recovery of two methods of factor analysis. The methods researched were a traditional factor analysis of tetrachoric correlation coefficients and an IRT approach to factor analysis which utilizes marginal maximum likelihood estimation using an EM algorithm …
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Item parameter estimation of a two-dimensional generalized Mirt model
… model as special cases. In this study, an MMLE/EM approach (the Bock and Aitkin method) was used to develop an estimation procedure for the generalized model, and the precision of this procedure was evaluated using both simulated and real data. Computational difficulties and limitations …