HY
hyunsooseol/snowIRT
This module includes Item Statistics, Model fit, Differential Item Functioning, Wright Map, Expected Scores Curve,and Item Characteristic Curve for DIF using MML estimation of the Rasch measurement model. Furthermore you can analyze DIF, Distractor analysis and Many facet Rasch model.
snowIRT
This module includes dichotomous, polytomous, and many facet model based on Rasch measurement model. This module also provides variouse types of DIF,and Distractor analysis.
Installation
At the moment, snowIRT is not in CRAN yet, so you need to install it via devtools
devtools::install_github("hyunsooseol/snowIRT")