Package: plink
Version: 1.1-0
Date: 2009-05-14
Title: IRT Separate Calibration Linking Methods
Depends: R (>= 2.9), methods, statmod, lattice, MASS
Author: Jonathan P. Weeks <weeksjp@gmail.com>
Maintainer: Jonathan P. Weeks <weeksjp@gmail.com>
Description: This package uses item response theory methods to compute
linking constants and conduct chain linking of unidimensional
or multidimensional tests for multiple groups under a
nonequivalent groups common item design.  The unidimensional
methods include the Mean/Mean, Mean/Sigma, Haebara, and
Stocking-Lord methods for dichotomous (1PL, 2PL and 3PL) and/or
polytomous (graded response, partial credit/generalized partial
credit, nominal, and multiple-choice model) items.  The
multidimensional methods include the Reckase-Martineau method
and extensions of the Haebara and Stocking-Lord method using a
single dilation parameter, multiple dilation parameters, or the
Oshima, Davey, & Lee approach for multidimensional extensions
of all the unidimensional dichotomous and polytomous item
response models.  The package also includes functions for
importing item and/or ability parameters from common IRT
software and ploting item characteristic/category curves or
surfaces and vector plots.
LazyLoad: Yes
LazyData: Yes
License: GPL (>= 2)
Packaged: 2009-05-14 14:42:32 UTC; Jonathan Weeks
Repository: CRAN
Date/Publication: 2009-05-15 11:27:00

Package: plink
Version: 1.1-1
Date: 2009-05-14
Title: IRT Separate Calibration Linking Methods
Depends: R (>= 2.9), methods, statmod, lattice, MASS
Author: Jonathan P. Weeks <weeksjp@gmail.com>
Maintainer: Jonathan P. Weeks <weeksjp@gmail.com>
Description: This package uses item response theory methods to compute
linking constants and conduct chain linking of unidimensional
or multidimensional tests for multiple groups under a
nonequivalent groups common item design.  The unidimensional
methods include the Mean/Mean, Mean/Sigma, Haebara, and
Stocking-Lord methods for dichotomous (1PL, 2PL and 3PL) and/or
polytomous (graded response, partial credit/generalized partial
credit, nominal, and multiple-choice model) items.  The
multidimensional methods include the Reckase-Martineau method
and extensions of the Haebara and Stocking-Lord method using a
single dilation parameter, multiple dilation parameters, or the
Oshima, Davey, & Lee approach for multidimensional extensions
of all the unidimensional dichotomous and polytomous item
response models.  The package also includes functions for
importing item and/or ability parameters from common IRT
software and ploting item characteristic/category curves or
surfaces and vector plots.
LazyLoad: Yes
LazyData: Yes
License: GPL (>= 2)
Packaged: 2009-05-27 15:14:27 UTC; Jonathan Weeks
Repository: CRAN
Date/Publication: 2009-05-28 07:13:09