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| Format: | Recurso digital |
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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.20430390 |
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Table of Contents:
- <h2>Initial release</h2> <ul> <li><code>csem_gt()</code> implements the three relative-error estimators of Brennan (1998) -- <code>full</code>, <code>large_a</code>, <code>uncorrelated</code> -- together with the closed-form absolute error variance (Brennan 1998, eq. 20).</li> <li>Closed-form analytical sampling variances and item-resampling bootstrap variances for all four estimators.</li> <li>Quadratic smoothing of conditional error variances on observed score, with optional exclusion of floor and ceiling cases.</li> <li>D-study extrapolation via <code>n_items_D</code>.</li> <li>S3 class <code>csem</code> with full method set: <code>print</code>, <code>summary</code>, <code>plot</code>, <code>as.data.frame</code>, <code>by_score</code>, <code>coef</code>.</li> <li><code>iowa_like</code> synthetic dataset calibrated to the ITED Vocabulary Test.</li> <li>Two vignettes: tutorial introduction and worked examples.</li> </ul>