About:
The Item Response Theory (IRT) library is a set of functions to estimate the items and abilities from the responses of subjects to a questionnaire. The IRT models supported are the logistic model, the nominal response model, the graded response model, and smoothing by penalization and kernel. The project also hosts rirt, a package for the R Project for Statistical Computing, and eirt, an add-in for Excel.

Author:
Stephane Germain [contact developer]

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Homepage:
http://libirt.sourceforge.net/
Tar/GZ:
http://sourceforge.net/project/showfiles.php?group_id=164538

Trove categories: [change]

[Development Status]		5 - Production/Stable
[Environment]		Console (Text Based), Plugins
[Intended Audience]		Advanced End Users, Developers
[License]		OSI Approved :: GNU General Public License (GPL)
[Operating System]		OS Independent
[Programming Language]		C, Visual Basic
[Topic]		Education :: Testing, Scientific/Engineering :: Mathematics
[Translations]		English, French

Dependencies: [change]
GNU Scientific Library (required)
R (recommended)
[download links]

 Branches

Branch	Version	Last release	License	URLs
Default			GNU General Public License (GPL)