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catR (version 3.7)
Procedures to Generate Patterns under Computerized Adaptive Testing
Description
Generation of response patterns under dichotomous and polytomous computerized adaptive testing (CAT) framework.
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Install
install.packages('catR')
Monthly Downloads
5,466
Version
3.7
License
GPL (>= 2)
Maintainer
David Magis
Last Published
May 9th, 2016
Functions in catR (3.7)
Search functions
thetaEst
Ability estimation (dichotomous and polytomous models)
tcals
Items parameters of the TCALS 1998 data set and subgroups of items
randomCAT
Random generation of adaptive tests (dichotomous and polytomous models)
nextItem
Selection of the next item
KL
Kullback-Leibler (KL) and posterior Kullback-Leibler (KLP) values for item selection
semTheta
Standard error of ability estimation (dichotomous and polytomous models)
Ji
Function $J(\theta)$ for weighted likelihood estimation (dichotomous and polytomous IRT models)
genDichoMatrix
Item bank generation (dichotomous models)
genPattern
Random generation of item response patterns under dichotomous and polytomous IRT models
Pi
Item response probabilities, first, second and third derivatives (dichotomous and polytomous models)
integrate.catR
Numerical integration by linear interpolation (for catR internal use)
GDI
Global-discrimination index (GDI) and posterior global-discrimination index (GDIP) for item selection
startItems
Selection of the first items
Ii
Item information functions, first and second derivatives (dichotomous and polytomous models)
genPolyMatrix
Item bank generation (polytomous models)
EPV
Expected Posterior Variance (EPV)
eapEst
EAP ability estimation (dichotomous and polytomous IRT models)
OIi
Observed information function (dichotomous and polytomous models)
simulateRespondents
Simulation of multiple examinees of adaptive tests
MEI
(Maximum) Expected Information (MEI)
MWI
Maximum likelihood weighted information (MLWI) and maximum posterior weighted information (MPWI)
eapSem
Standard error of EAP ability estimation (dichotomous and polytomous IRT models)
test.cbList
Testing the format of the list for content balancing under dichotomous or polytomous IRT models
testList
Testing the format of the input lists
breakBank
Breaking the item bank in item parameters and group membership (for content balancing)