Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"BILOG"”.
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Applications of computational statistics in cognitive diagnosis and IRT modeling
… calibration procedures for IRT models such as BILOG in that we use Genetic Algorithm in the maximization (M) Step of the EM algorithm. Procedures for classifying examinees are also proposed. A simulation study shows that our calibration procedure works remarkably well for a wide variety of …
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A comparison of traditional and IRT factor analysis.
… approach to factor analysis was conducted using BILOG 3 software. Parameter recovery was evaluated in terms of root mean square error, average signed bias, and Pearson correlations between estimated and true item parameters. ANOVAs were conducted to identify systematic differences in error …
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Fast EM Based Posterior Approximation for IRT Item Parameters
… through standard IRT software, such as BILOG-MG. However, checking IRT model fit is an on-going area of research, with no one method in wide use. One routine that has recently become popular for this is posterior predictive model checking (PPMC). This is commonly implemented using the …
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Effect of Multidimensional Ability Differences Across Groups of Examinees on Unidimensional Ability Estimation
… different from other groups of examinees. BILOG was used to estimate examinee abilities for each of the three group datasets separately, and also for the combined dataset. Estimated abilities of the same group of examinees based on separate model calibrations were equated and compared. …
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Least squares estimation for latent variables with dichotomous item response data
… and its applications is comparable to that of BILOG, one of the most popular and recommended IRT parameter estimation computer programs. Some possible extensions of this study were also briefly discussed.