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catR (version 3.4)
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
1,052
Version
3.4
License
GPL (>= 2)
Maintainer
David Magis
Last Published
January 6th, 2015
Functions in catR (3.4)
Search functions
Ji
Function $J(\theta)$ for weighted likelihood estimation (dichotomous and polytomous IRT models)
breakBank
Breaking the item bank in item parameters and group membership (for content balancing)
genPattern
Random generation of item response patterns under dichotomous and polytomous IRT models
simulateRespondents
Simulation of multiple examinees of adaptive tests
MEI
(Maximum) Expected Information (MEI)
EPV
Expected Posterior Variance (EPV)
OIi
Observed information function (dichotomous and polytomous models)
tcals
Items parameters of the TCALS 1998 data set and subgroups of items
Ii
Item information functions, first and second derivatives (dichotomous and polytomous models)
nextItem
Selection of the next item
MWI
Maximum likelihood weighted information (MLWI) and maximum posterior weighted information (MPWI)
testList
Testing the format of the input lists
thetaEst
Ability estimation (dichotomous and polytomous models)
KL
Kullback-Leibler (KL) and posterior Kullback-Leibler (KLP) values for item selection
randomCAT
Random generation of adaptive tests (dichotomous and polytomous models)
startItems
Selection of the first items
semTheta
Standard error of ability estimation (dichotomous and polytomous models)
integrate.catR
Numerical integration by linear interpolation (for catR internal use)
eapEst
EAP ability estimation (dichotomous and polytomous IRT models)
genPolyMatrix
Item bank generation (polytomous models)
eapSem
Standard error of EAP ability estimation (dichotomous and polytomous IRT models)
Pi
Item response probabilities, first, second and third derivatives (dichotomous and polytomous models)
genDichoMatrix
Item bank generation (dichotomous models)
test.cbList
Testing the format of the list for content balancing under dichotomous or polytomous IRT models