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Contributed R Packages

Below is a list of all packages provided by project eRm - extended Rasch modeling.

Important note for package binaries: R-Forge provides these binaries only for the most recent version of R, but not for older versions. In order to successfully install the packages provided on R-Forge, you have to switch to the most recent version of R or, alternatively, use the package sources (.tar.gz) in older versions of R. All packages are built/checked according to this schedule.

  eRm - Extended Rasch Modeling.  
 

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).

Download:   Package source (.tar.gz) | Windows binary (.zip) | MacOS X leopard binary (.tgz)

To install this package directly within R type: install.packages("eRm", repos="http://R-Forge.R-project.org")

Version: 0.10-2 | Last change: 2009-03-05 09:36:57+01 | Rev.: 52

Stable Release: Get eRm 0.10-2 from CRAN

  
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Vienna University of Economics and Business Administration University of Wisconsin - Madison Powered By GForge Collaborative Develo pment Environment JavaHispano