IRTpp: Estimating IRT Parameters using the IRT Methodology

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An implementation of the IRT paradigm for the scoring of different instruments measuring latent traits (a.k.a Abilities) and estimating item parameters for a variety of models, this package is highly optimized using Rcpp and carefully written R for the rest of the package, it aims to expand IRT applications to those applications that require faster and more robust estimation procedures. See the IRTpp documentation and github site for more information and examples.

Author
SICS Research Group
Date of publication
2016-07-05 14:02:36
Maintainer
Camilo Antonio Suarez Bolanos <caasuarezbo@unal.edu.co>
License
MIT + file LICENSE
Version
0.2.6.1
URLs

View on CRAN

Man pages

abilityinterface
@name abilityinterface @param zita_par @param data @param...
alpha.c
Cronbach-Mesbah Curve
alpha.cronbach
Cronbach's alpha
an.parallel
Parallel Analysis
autoapply
Autoapply
biserial.cor
Biserial Correlation
check.model
model verification
checkModel
checkModel
collapseCells
Collapses Cells
eapinterface
eapinterface @param zita_par - @param dat - @param e_model -...
full.pattern.expand
Full expansion of patterns
gg
Probability for envelopes
gutt
Guttman's Lambda
indexPat
Index pattern
individual.traits
Estimate the latent traits.
information
Test or Item information
irtpp
Estimate a test item parameters.
irtpp.model
Valid model
irtpp.models
Available models
irtpp.p
Probability function for all models.
IRTpp-package
IRTpp : Item Response Theory Implemented in R and Cpp
llikm
Loglik in stem M
loglik
LogLikelihood of a IRT model
loglik.f
LogLikelihood of a IRT model
mapinterface
mapinterface @param zita_par - @param dat - @param e_model -...
model.transform
Model transformations
normalize
Normalize a vector
orlando_itemf
Orlando's statistic
parameter.list
Parameter list form
parameter.matrix
Parameter matrix form
parameters.initialize
parameters.initialize
pattern.expand
Expansion of patterns
pattern.freqs
Frequencies for the expanded pattern matrix
phi
Phi coefficient of correlation
plotevenlope
Confidence bands
polyserial.cor
Polyserial correlation
print.sentence
Print Sentence, Helper function Prints different strings...
prob
Probability multidimensional case
prob.2pl
2PL fast probability function
prob.3pl
3PL fast probability function
probability.1pl
1PL probability function
probability.2pl
2PL probability function
probability.3pl
3PL probability function
rtnorm
Truncated normal simulation
SimulateItemParameters
Simulates item parameters for UIRT models.
simulateTest
Simulates a test
simulateTest.file
This function simulates tests according to a IRT model.
simulateTestMD
Simulate test Multidimensional
s_ss
Calculates the likelihoods.
testmulti
Multidimensional test
test.plot
Plot a test or an item.
ua
Undefined assignment, Helper function
uirtestimate
uirtestimate
x2
Statistical x2.
Yule
Yule coefficient of correlation
z3_itemf
Z3 statistic.
z3_personf
Z3 Person fit statistic

Files in this package

IRTpp
IRTpp/inst
IRTpp/inst/irtppcpp
IRTpp/inst/irtppcpp/irtppcpp.mk
IRTpp/inst/irtppcpp/test2pl.csv
IRTpp/inst/irtppcpp/tests
IRTpp/inst/irtppcpp/tests/matrix.cpp
IRTpp/inst/irtppcpp/tests/test.cpp
IRTpp/inst/irtppcpp/src
IRTpp/inst/irtppcpp/src/type
IRTpp/inst/irtppcpp/src/type/LatentTraits.h
IRTpp/inst/irtppcpp/src/type/Matrix.h
IRTpp/inst/irtppcpp/src/type/parameter.h
IRTpp/inst/irtppcpp/src/type/ghquads.h
IRTpp/inst/irtppcpp/src/type/dataset.h
IRTpp/inst/irtppcpp/src/type/dataset.cpp
IRTpp/inst/irtppcpp/src/type/ghquads.cpp
IRTpp/inst/irtppcpp/src/model
IRTpp/inst/irtppcpp/src/model/onepl.h
IRTpp/inst/irtppcpp/src/model/model.h
IRTpp/inst/irtppcpp/src/model/threepl.h
IRTpp/inst/irtppcpp/src/model/twopl.h
IRTpp/inst/irtppcpp/src/main.cpp
IRTpp/inst/irtppcpp/src/estimation
IRTpp/inst/irtppcpp/src/estimation/mstep.cpp
IRTpp/inst/irtppcpp/src/estimation/mstep.h
IRTpp/inst/irtppcpp/src/estimation/emestimation.h
IRTpp/inst/irtppcpp/src/estimation/estep.cpp
IRTpp/inst/irtppcpp/src/estimation/LatentTraitEstimation.h
IRTpp/inst/irtppcpp/src/estimation/estep.h
IRTpp/inst/irtppcpp/src/utils
IRTpp/inst/irtppcpp/src/utils/Input.h
IRTpp/inst/irtppcpp/src/utils/andrade.h
IRTpp/inst/irtppcpp/src/utils/asa111.h
IRTpp/inst/irtppcpp/src/utils/ramsay.h
IRTpp/inst/irtppcpp/src/utils/Input.cpp
IRTpp/inst/irtppcpp/src/utils/cholesky.h
IRTpp/inst/irtppcpp/src/utils/asa111.cpp
IRTpp/inst/irtppcpp/irtppcpp.mk.orig
IRTpp/inst/irtppcpp/makefile
IRTpp/inst/irtppcpp/irtppcpp.mk.win64
IRTpp/inst/irtppcpp/README.md
IRTpp/inst/irtppcpp/irtppcpp.mk.win32
IRTpp/inst/irtppcpp/Cuads.csv
IRTpp/inst/irtppcpp/test.txt
IRTpp/inst/irtppcpp/LICENSE
IRTpp/inst/irtppcpp/include
IRTpp/inst/irtppcpp/include/catch.h
IRTpp/inst/irtppcpp/include/SPGO
IRTpp/inst/irtppcpp/include/SPGO/examples
IRTpp/inst/irtppcpp/include/SPGO/examples/Example_HillClimbing.cpp
IRTpp/inst/irtppcpp/include/SPGO/examples/Example_Any.cpp
IRTpp/inst/irtppcpp/include/SPGO/examples/Example_Brent.cpp
IRTpp/inst/irtppcpp/include/SPGO/examples/Example_BFGS.cpp
IRTpp/inst/irtppcpp/include/SPGO/makefile
IRTpp/inst/irtppcpp/include/SPGO/Function.hpp
IRTpp/inst/irtppcpp/include/SPGO/include
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Heuristic
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Heuristic/Parameter.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Heuristic/HillClimbing.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Unrestricted
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Unrestricted/Singlevariable
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Unrestricted/Singlevariable/Brent.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Unrestricted/Multivariable
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Unrestricted/Multivariable/BFGS.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Optim.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Restricted
IRTpp/inst/irtppcpp/include/SPGO/include/Optimization/Restricted/Restricted.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Types
IRTpp/inst/irtppcpp/include/SPGO/include/Types/Any.hpp
IRTpp/inst/irtppcpp/include/SPGO/include/Types/Generic.hpp
IRTpp/inst/extdata
IRTpp/inst/extdata/test1.R
IRTpp/inst/extdata/Cuads10.csv
IRTpp/inst/extdata/test.R
IRTpp/inst/extdata/Cuads.csv
IRTpp/inst/extdata/test3.R
IRTpp/inst/extdata/test2.R
IRTpp/inst/doc
IRTpp/inst/doc/simulateTest.html
IRTpp/inst/doc/estimate.Rmd
IRTpp/inst/doc/itemfit.Rmd
IRTpp/inst/doc/itemfit.html
IRTpp/inst/doc/simulateTest.R
IRTpp/inst/doc/Exploratory.Rmd
IRTpp/inst/doc/estimate.R
IRTpp/inst/doc/parameters.Rmd
IRTpp/inst/doc/Exploratory.html
IRTpp/inst/doc/estimate.html
IRTpp/inst/doc/parameters.html
IRTpp/inst/doc/simulateTest.Rmd
IRTpp/inst/doc/Exploratory.R
IRTpp/src
IRTpp/src/Makevars
IRTpp/src/util_package.cpp
IRTpp/src/util_package.h
IRTpp/src/Makevars.win
IRTpp/src/RcppExports.cpp
IRTpp/NAMESPACE
IRTpp/R
IRTpp/R/utils.R
IRTpp/R/models.R
IRTpp/R/initialization.R
IRTpp/R/itemfit.R
IRTpp/R/simulation.R
IRTpp/R/exploratory.R
IRTpp/R/RcppExports.R
IRTpp/R/reclassifyPCA.R
IRTpp/R/irtpp.R
IRTpp/vignettes
IRTpp/vignettes/estimate.Rmd
IRTpp/vignettes/itemfit.Rmd
IRTpp/vignettes/Exploratory.Rmd
IRTpp/vignettes/parameters.Rmd
IRTpp/vignettes/simulateTest.Rmd
IRTpp/README.md
IRTpp/MD5
IRTpp/build
IRTpp/build/vignette.rds
IRTpp/DESCRIPTION
IRTpp/man
IRTpp/man/IRTpp-package.Rd
IRTpp/man/test.plot.Rd
IRTpp/man/biserial.cor.Rd
IRTpp/man/polyserial.cor.Rd
IRTpp/man/parameters.initialize.Rd
IRTpp/man/mapinterface.Rd
IRTpp/man/information.Rd
IRTpp/man/loglik.f.Rd
IRTpp/man/parameter.list.Rd
IRTpp/man/pattern.freqs.Rd
IRTpp/man/print.sentence.Rd
IRTpp/man/orlando_itemf.Rd
IRTpp/man/irtpp.model.Rd
IRTpp/man/SimulateItemParameters.Rd
IRTpp/man/checkModel.Rd
IRTpp/man/probability.3pl.Rd
IRTpp/man/gutt.Rd
IRTpp/man/irtpp.Rd
IRTpp/man/prob.Rd
IRTpp/man/abilityinterface.Rd
IRTpp/man/plotevenlope.Rd
IRTpp/man/prob.3pl.Rd
IRTpp/man/z3_personf.Rd
IRTpp/man/loglik.Rd
IRTpp/man/Yule.Rd
IRTpp/man/pattern.expand.Rd
IRTpp/man/an.parallel.Rd
IRTpp/man/s_ss.Rd
IRTpp/man/simulateTest.Rd
IRTpp/man/gg.Rd
IRTpp/man/indexPat.Rd
IRTpp/man/testmulti.Rd
IRTpp/man/x2.Rd
IRTpp/man/simulateTestMD.Rd
IRTpp/man/individual.traits.Rd
IRTpp/man/parameter.matrix.Rd
IRTpp/man/rtnorm.Rd
IRTpp/man/full.pattern.expand.Rd
IRTpp/man/uirtestimate.Rd
IRTpp/man/llikm.Rd
IRTpp/man/simulateTest.file.Rd
IRTpp/man/probability.1pl.Rd
IRTpp/man/z3_itemf.Rd
IRTpp/man/eapinterface.Rd
IRTpp/man/normalize.Rd
IRTpp/man/irtpp.p.Rd
IRTpp/man/irtpp.models.Rd
IRTpp/man/alpha.cronbach.Rd
IRTpp/man/phi.Rd
IRTpp/man/prob.2pl.Rd
IRTpp/man/probability.2pl.Rd
IRTpp/man/model.transform.Rd
IRTpp/man/alpha.c.Rd
IRTpp/man/collapseCells.Rd
IRTpp/man/check.model.Rd
IRTpp/man/autoapply.Rd
IRTpp/man/ua.Rd
IRTpp/cleanup
IRTpp/LICENSE