eatModel


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Documentation for package ‘eatModel’ version 0.5.25

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eatModel-package Specify and run IRT models from R (using Conquest or TAM).
convertLabel Transform SPSS variable and value labels into ZKD convention.
defineModel Prepares IRT analysis for Conquest and TAM
eapFromRes Collects all EAP results from the object returned by getResults()
equat1pl 1pl equating with optional elimination of linking DIF items
finalizeItemtable Creates item parameter table for the "Vergleichsarbeiten" from IQB database input
get.dsc Read Conquest 'descriptives' output files.
get.equ Reads equivalence table created in Conquest analysis.
get.itn Read ConQuest 'itanal' Output Files
get.plausible Read Conquest Plausible Values Output Files
get.prm Read Conquest prm (parameter) Output Files
get.shw Read ConQuest showfiles
get.wle Read Conquest WLE or MLE Output Files
getResults Collect all results from Conquest/TAM analysis into a common data frame
itemFromRes Collect all item results from the object returned by getResults()
mergeAttr Merge Two Data Frames and maintain variable attributes
num.to.cat Transform continuous variables into ordered factors
plotICC Plots item charactestic curves.
prepRep Prepares 'eatModel' results for jackknifing and trend estimation via 'eatRep'.
pvFromRes Collects all plausible values from the object returned by getResults()
q3FromRes Extracts the Q3 matrices from the object returned by getResults()
replSpecSign replaces special signs (non-ASCII characters) from a string.
runModel Run IRT model specified by 'defineModel' using Conquest or TAM
sciences Science achievement test data obtained from large-scale assessment.
simEquiTable Computes equivalence table based on simulated data
splitModels Create several models by splitting the qMatrix and/or person.groups
transformToBista Transformation of item and person parameters to the Bista metric.
wleFromRes Collects all WLEs from the object returned by getResults()