r-cran-erm - 1.0-2-1+b1 main

eRm fits Rasch models (RM), linear logistic test models (LLTM),
rating scale model (RSM), linear rating scale models (LRSM), partial
credit models (PCM), and linear partial credit models (LPCM). Missing
values are allowed in the data matrix. Additional features are the ML
estimation of the person parameters, Andersen's LR-test,
item-specific Wald test, itemfit and personfit statistics including
infit and outfit measures, various ICC and related plots, automated
stepwise item elimination, simulation module for various binary data
matrices. An eRm platform is provided at R-forge (see URL).