immer

Author: Alexander Robitzsch, Jan Steinfeld
Contact: https://cran.r-project.org/web/packages/immer/index.html
Description: immer: Item Response Models for Multiple Ratings. Implements some item response models for multiple ratings, including the hierarchical rater model, conditional maximum likelihood estimation of linear logistic partial credit model and a wrapper function to the commercial FACETS program. See Robitzsch and Steinfeld (2018) for a description of the functionality of the package. See Wang, Su & Qiu (2014; <doi:10.1111/jedm.12045>) for an overview of modeling alternatives.
Analyses: Equating
System Requirements: Windows, Mac, Linux
Measurement Model: Rasch
License Type: Open-Source (R)
Documentation: user manual, sample datasets