CRAN
xxIRT 2.1.2
Item Response Theory and Computer-Based Testing in R
Released Mar 22, 2019 by Xiao Luo
This package cannot yet be used with Renjin it depends on other packages which are not available: ggplot2 3.1.0
An older version of this package is
more compatible with Renjin.
Dependencies
ggplot2 3.1.0 glpkAPI 1.3.0 reshape2 1.4.3 lpSolveAPI 5.5.2.0-17
A suite of psychometric analysis tools for research and operation, including: (1) computation of probability, information, and likelihood for the 3PL, GPCM, and GRM; (2) parameter estimation using joint or marginal likelihood estimation method; (3) simulation of computerized adaptive testing using built-in or customized algorithms; (4) assembly and simulation of multistage testing. The full documentation and tutorials are at