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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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Version

Install

install.packages('catR')

Monthly Downloads

1,370

Version

3.4

License

GPL (>= 2)

Maintainer

David Magis

Last Published

January 6th, 2015

Functions in catR (3.4)

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