pairwise

Author: Joerg-Henrik Heine
Contact: https://cran.r-project.org/web/packages/pairwise/index.html
Description: pairwise: Rasch Model Parameters by Pairwise Algorithm Performs the explicit calculation - not estimation! - of the Rasch item parameters for dichotomous and polytomous item responses, using a pairwise comparison approach. Person parameters (WLE) are calculated according to Warm's weighted likelihood approach.
Analyses: DIF; Mixture Models
System Requirements: Windows, Linux, or Mac
Measurement Model: Rasch
License Type: Open-Source (R)
Documentation: user manual, sample dataset