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IRTpp

Unidimensional IRT R package with C++ implementation

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Install

install.packages('IRTpp')

Monthly Downloads

40

Version

0.2.6.1

License

MIT + file LICENSE

Issues

0

Pull Requests

0

Stars

2

Forks

0

Maintainer

Camilo Antonio Suarez Bolanos

Last Published

December 27th, 2016

Functions in IRTpp (0.2.6.1)

checkModel

checkModel
eapinterface

eapinterface @param zita_par - @param dat - @param e_model - @param matrix_flag - @param prob_matrix -
autoapply

Autoapply
full.pattern.expand

Full expansion of patterns
alpha.c

Cronbach-Mesbah Curve
abilityinterface

@name abilityinterface @param zita_par @param data @param model_ @param method @param matrix_flag @param prob_matrix
check.model

model verification
collapseCells

Collapses Cells
an.parallel

Parallel Analysis
gg

Probability for envelopes
indexPat

Index pattern
irtpp

Estimate a test item parameters.
information

Test or Item information
irtpp.model

Valid model
gutt

Guttman's Lambda
IRTpp-package

IRTpp : Item Response Theory Implemented in R and Cpp
llikm

Loglik in stem M
irtpp.p

Probability function for all models.
individual.traits

Estimate the latent traits.
irtpp.models

Available models
loglik

LogLikelihood of a IRT model
parameters.initialize

parameters.initialize
orlando_itemf

Orlando's statistic
parameter.list

Parameter list form
mapinterface

mapinterface @param zita_par - @param dat - @param e_model - @param matrix_flag - @param prob_matrix -
model.transform

Model transformations
normalize

Normalize a vector
parameter.matrix

Parameter matrix form
pattern.expand

Expansion of patterns
loglik.f

LogLikelihood of a IRT model
prob.2pl

2PL fast probability function
probability.3pl

3PL probability function
print.sentence

Print Sentence, Helper function Prints different strings concatenating them with a " "
rtnorm

Truncated normal simulation
probability.1pl

1PL probability function
prob.3pl

3PL fast probability function
plotevenlope

Confidence bands
pattern.freqs

Frequencies for the expanded pattern matrix
probability.2pl

2PL probability function
prob

Probability multidimensional case
s_ss

Calculates the likelihoods.
SimulateItemParameters

Simulates item parameters for UIRT models.
simulateTest.file

This function simulates tests according to a IRT model.
ua

Undefined assignment, Helper function
simulateTestMD

Simulate test Multidimensional
test.plot

Plot a test or an item.
simulateTest

Simulates a test
testmulti

Multidimensional test
x2

Statistical x2.
uirtestimate

uirtestimate
Yule

Yule coefficient of correlation
z3_itemf

Z3 statistic.
z3_personf

Z3 Person fit statistic