coldstart: Calibrating Generated Items Before Pretesting with Predicted Priors
Predicts Rasch item difficulty from item features (text embeddings from any model, template family, content metadata) by ridge regression (Hoerl and Kennard, 1970, <doi:10.1080/00401706.1970.10488634>) with honest out-of-sample uncertainty, uses the predictions as robust informative priors to calibrate new items from small pretest samples, in the spirit of using collateral information in calibration (Mislevy, Sheehan and Wingersky, 1993, <doi:10.1111/j.1745-3984.1993.tb00422.x>), plans the pretest sample size needed for a target precision, and diagnoses item families whose predictions cannot be trusted.
| Version: | 0.1.0 |
| Depends: | R (≥ 4.1) |
| Imports: | stats |
| Suggests: | knitr, markdown |
| Published: | 2026-10-07 |
| DOI: | 10.32614/CRAN.package.coldstart (may not be active yet) |
| Author: | Daniel Edi  [aut,
cre, cph] |
| Maintainer: | Daniel Edi <danieledi2026 at gmail.com> |
| BugReports: | https://github.com/edidatasolutions/coldstart/issues |
| License: | MIT + file LICENSE |
| URL: | https://github.com/edidatasolutions/coldstart, https://edidatasolutions.github.io/coldstart/ |
| NeedsCompilation: | no |
| Materials: | README, NEWS |
| CRAN checks: | coldstart results |
Documentation:
| Reference manual: | coldstart.html , coldstart.pdf |
| Vignettes: |
Calibrating generated items with predicted priors (source, R code) |
Downloads:
| Package source: | coldstart_0.1.0.tar.gz |
| Windows binaries: | r-devel: not available, r-release: not available, r-oldrel: coldstart_0.1.0.zip |
| macOS binaries: | r-release (arm64): coldstart_0.1.0.tgz, r-oldrel (arm64): coldstart_0.1.0.tgz, r-release (x86_64): coldstart_0.1.0.tgz, r-oldrel (x86_64): coldstart_0.1.0.tgz |
Linking:
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