plink (1.3-1)
IRT Separate Calibration Linking Methods.
http://cran.r-project.org/web/packages/plink
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 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 least squares method and extensions of the Haebara and Stocking-Lord method using single or multiple dilation parameters 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, conducting IRT true score and observed score equating, and plotting item response curves/surfaces, vector plots, and comparison plots for examining parameter drift.
Maintainer:
Jonathan P. Weeks
Author(s): Jonathan P. Weeks <weeksjp@gmail.com>
License: GPL (>= 2)
Uses: lattice, MASS, statmod
Reverse suggests: mirt, rpf
Released almost 2 years ago.
13 previous versions
- plink_1.3-0. Released over 2 years ago.
- plink_1.2-7. Released over 2 years ago.
- plink_1.2-5. Released almost 3 years ago.
- plink_1.2-4. Released almost 3 years ago.
- plink_1.2-3. Released about 3 years ago.
- plink_1.2-2. Released over 3 years ago.
- plink_1.2-1. Released over 3 years ago.
- plink_1.2-0. Released almost 4 years ago.
- plink_1.1-6. Released almost 4 years ago.
- plink_1.1-5. Released almost 4 years ago.
- plink_1.1-4. Released almost 4 years ago.
- plink_1.1-3. Released almost 4 years ago.
- plink_0.0-4. Released over 5 years ago.
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