eRm: Extended Rasch Modeling
Version 0.15-7

The eRm package fits Rasch models (RM), linear logistic test models (LLTM), rating scale model (RSM), linear rating scale models (LRSM), partial credit models (PCM), and linear partial credit models (LPCM). Missing values are allowed in the data matrix. Additional features are the ML estimation of the person parameters, Andersen's LR-test, item-specific Wald test, Martin-Löf-Test, nonparametric Monte-Carlo Tests, itemfit and personfit statistics including infit and outfit measures, various ICC and related plots, automated stepwise item elimination, simulation module for various binary data matrices. An eRm platform is provided at R-forge (see URL).

Browse man pages Browse package API and functions Browse package files

AuthorPatrick Mair [cre, aut], Reinhold Hatzinger [aut], Marco J. Maier [aut], Thomas Rusch [ctb]
Date of publication2016-11-20 16:47:49
MaintainerPatrick Mair <mair@fas.harvard.edu>
LicenseGPL-2
Version0.15-7
URL http://r-forge.r-project.org/projects/erm/
Package repositoryView on R-Forge
InstallationInstall the latest version of this package by entering the following in R:
install.packages("eRm", repos="http://R-Forge.R-project.org")

Man pages

anova.eRm: Analysis of Deviances for Rasch Models
anova.llra: Analysis of Deviance for Linear Logistic Models with Relaxed...
build_W: Automatized Construction of LLRA Design Matrix
collapse_W: Convenient Collapsing of LLRA Design Matrix
eRm.data: Data for Computing Extended Rasch Models
gofIRT: Various model tests and fit indices
IC: Information criteria
itemfit.ppar: Residuals, Personfit and Itemfit Statistics
item_info: Calculate Item Information for 'eRm' objects
LLRA: Fit Linear Logistic Models with Relaxed Assumptions (LLRA)
llraDat1: An Artificial LLRA Data Set
llraDat2: An Artificial LLRA Data Set
llradat3: An Artificial LLRA Data Set
llra.datprep: Prepare Data Set for LLRA Analysis
LLTM: Estimation of linear logistic test models
LPCM: Estimation of linear partial credit models
LRSM: Estimation of linear rating scale models
LRtest: Computation of Andersen's LR-test.
MLoef: Martin-L<c3><b6>f's Likelihood-Ratio-Test
NPtest: A Function to Perform Nonparametric Rasch Model Tests
PCM: Estimation of partial credit models
person.parameter: Estimation of Person Parameters
phi.range: Example User Function
plotDIF: Confidence intervals plot of item parameter estimates.
plotGR: Plot Treatment or Covariate Effects for LLRA
plotICC: ICC Plots
plotINFO: Plot Information For "eRm" objects
plotPImap: Person-Item Map
plotPWmap: Pathway Map
plotTR: Plot Trend Effects for LLRA
predict.ppar: Predict methods
print.eRm: Methods for extended Rasch models
RaschSampler: Rasch Sampler Package
RM: Estimation of Rasch Models
rsampler: Sampling Binary Matrices
RSctr: Control Object
rsctrl: Controls for the Sampling Function
rsextrmat: Extracting a Matrix
rsextrobj: Extracting Encoded Sample Matrices
RSM: Estimation of rating scale models
RSmpl: Sample Objects
rstats: Calculating Statistics for the Sampled Matrices
SepRel: Person Separation Reliability
sim.2pl: Simulation of 2-PL Data
sim.locdep: Simulation locally dependent items
sim.rasch: Simulation of Rasch homogeneous data
sim.xdim: Simulation of multidimensional binary data
stepwiseIt: Stepwise item elimination
summary.llra: Summarizing Linear Logistic Models with Relaxed Assumptions...
summary.RSctr: Summary Method for Control Objects
summary.RSmpl: Summary Methods for Sample Objects
test_info: Calculate Test Information For 'eRm' objects
thresholds: Computation of item-category treshold parameters.
Waldtest: Item-Specific Wald Test
xmpl: Example Data

Functions

IC Man page
IC.ppar Man page Source code
LLRA Man page Source code
LLTM Man page
LPCM Man page
LRSM Man page
LRtest Man page
LRtest.Rm Man page
MLoef Man page Source code
MLoef.x Source code
NPtest Man page Source code
NonparametricTests Man page
PCM Man page
RM Man page
RSM Man page
RSctr Man page
RSmpl Man page
RSmplext Man page
RaschSampler Man page
Rsquared Source code
SepRel Man page Source code
T1 Source code
T10 Source code
T11 Source code
T1l Source code
T1m Source code
T2 Source code
T2m Source code
T4 Source code
Tmd Source code
Tpbis Source code
Waldtest Man page
Waldtest.Rm Man page Source code
anova.eRm Man page Source code
anova.llra Man page Source code Source code
build_W Man page Source code
build_catdes Man page Source code
build_effdes Man page Source code
build_trdes Man page Source code
cldeviance Source code
coef.eRm Man page
coef.ppar Man page
collapse_W Man page Source code
combine.performance.objects Source code
component.dist Source code
compute.unnormalized.roc.curve Source code
confint.eRm Man page Source code
confint.ppar Man page Source code
confint.threshold Man page Source code
construct.linefunct Source code
cwdeviance Source code
datcheck Source code
datcheck.LRtest Source code
define.environments Source code
downsample Source code
eRm.data Man page
farg Source code
fitcml Source code
garg Source code
geodist Source code
get.arglist Source code
get_item_cats Man page Source code
gofIRT Man page Source code
gofIRT.ppar Man page Source code
hoslem Source code
i_info Man page Source code
invalid Source code
item_info Man page Source code
itemfit Man page
itemfit.ppar Man page
labeling.internal Source code
likLR Source code
llra.datprep Man page Source code
llraDat1 Man page
llraDat2 Man page
llradat3 Man page
lltmdat1 Man page
lltmdat2 Man page
logLik.eRm Man page Source code
logLik.ppar Man page Source code
lpcmdat Man page
lrsmdat Man page
model.matrix.eRm Man page
ntersection.point Source code
pcmdat Man page
pcmdat2 Man page
performance Source code
performance.accuracy Source code
performance.auc Source code
performance.calibration.error Source code
performance.chisq Source code
performance.cost Source code
performance.error.rate Source code
performance.expected.cost Source code
performance.f Source code
performance.false.negative.rate Source code
performance.false.positive.rate Source code
performance.lift Source code
performance.mean.cross.entropy Source code
performance.mutual.information Source code
performance.negative.predictive.value Source code
performance.odds.ratio Source code
performance.phi Source code
performance.plot.canvas Source code
performance.plot.horizontal.avg Source code
performance.plot.no.avg Source code
performance.plot.threshold.avg Source code
performance.plot.vertical.avg Source code
performance.positive.predictive.value Source code
performance.precision.recall.break.even.point Source code
performance.prediction.conditioned.fallout Source code
performance.prediction.conditioned.miss Source code
performance.rate.of.negative.predictions Source code
performance.rate.of.positive.predictions Source code
performance.rocconvexhull Source code
performance.root.mean.squared.error Source code
performance.sar Source code
performance.true.negative.rate Source code
performance.true.positive.rate Source code
person.parameter Man page Source code
person.parameter.eRm Man page
personfit Man page
personfit.ppar Man page Source code
phi.range Man page
pifit.internal Source code
plist.internal Source code
plot.performance Source code
plot.ppar Man page Source code
plotCI Source code
plotDIF Man page Source code
plotGOF Man page Source code
plotGOF.LR Man page Source code
plotGR Man page Source code
plotICC Man page
plotICC.Rm Man page Source code
plotINFO Man page Source code
plotPImap Man page
plotPWmap Man page
plotTR Man page Source code
plotjointICC Man page Source code
plotjointICC.dRm Man page Source code
pmat Man page
pmat.ppar Man page
predict.ppar Man page Source code
prediction Source code
prettyPaste Source code
print.ICr Source code
print.LR Man page
print.MLobj Source code
print.MLoef Man page Source code
print.T10obj Source code
print.T11obj Source code
print.T1lobj Source code
print.T1mobj Source code
print.T1obj Source code
print.T2mobj Source code
print.T2obj Source code
print.T4obj Source code
print.Tmdobj Source code
print.Tpbisobj Source code
print.eRm Man page
print.eRm_SepRel Man page Source code
print.eRm_anova Man page Source code
print.gof Man page Source code
print.ifit Man page
print.llra Man page Source code
print.logLik.ppar Man page
print.pfit Man page
print.ppar Man page
print.resid Man page
print.step Man page Source code
print.summary.llra Man page Source code
print.threshold Man page Source code
print.wald Man page
raschdat1 Man page
raschdat1_RM_fitted Man page
raschdat1_RM_lrres2 Man page
raschdat1_RM_plotDIF Man page
raschdat2 Man page
raschdat3 Man page
raschdat4 Man page
reachability Source code
residuals.ppar Man page
rostdeviance Source code
rsampler Man page
rsctrl Man page
rsextrmat Man page
rsextrobj Man page
rsmdat Man page
rstats Man page
sarg Source code
select.args Source code
select.prefix Source code
sim.2pl Man page Source code
sim.locdep Man page Source code
sim.rasch Man page Source code
sim.xdim Man page Source code
slice.run Source code
stepwiseIt Man page
stepwiseIt.eRm Man page Source code
summary.LR Man page Source code
summary.MLoef Man page Source code
summary.RSctr Man page
summary.RSmpl Man page
summary.RSmplext Man page
summary.eRm Man page
summary.eRm_SepRel Man page Source code
summary.gof Man page Source code
summary.llra Man page Source code Source code
summary.ppar Man page
summary.threshold Man page Source code
symmetrize Source code
test_info Man page Source code
thresholds Man page Source code
thresholds.eRm Man page Source code
vcov.eRm Man page
xmpl Man page
xmplbig Man page

Files

.Rinstignore
DESCRIPTION
NAMESPACE
NEWS
R
R/IC.default.R
R/IC.ppar.r
R/IC.r
R/LLRA.R
R/LLTM.R
R/LPCM.R
R/LRSM.R
R/LRtest.R
R/LRtest.Rm.R
R/MLoef.R
R/NPtest.R
R/PCM.R
R/RM.R
R/ROCR_aux.R
R/RSM.R
R/Rsquared.R
R/SepRel.R
R/Waldtest.R
R/Waldtest.Rm.R
R/anova.eRm.R
R/anova.llra.R
R/build_W.R
R/checkdata.R
R/cldeviance.R
R/cmlprep.R
R/coef.eRm.R
R/coef.ppar.R
R/collapse_W.R
R/confint.eRm.r
R/confint.ppar.r
R/confint.threshold.r
R/cwdeviance.r
R/datcheck.LRtest.r
R/datcheck.R
R/datprep_LLTM.R
R/datprep_LPCM.R
R/datprep_LRSM.R
R/datprep_PCM.R
R/datprep_RM.R
R/datprep_RSM.R
R/fitcml.R
R/gofIRT.R
R/gofIRT.ppar.R
R/hoslem.R
R/invalid.R
R/item_info.R
R/itemfit.R
R/itemfit.ppar.R
R/labeling.internal.r
R/likLR.R
R/llra.datprep.R
R/llra.internals.R
R/logLik.eRm.r
R/logLik.ppar.r
R/model.matrix.eRm.R
R/performance.R
R/performance_measures.R
R/performance_plots.R
R/person.parameter.R
R/person.parameter.eRm.R
R/personfit.R
R/personfit.ppar.R
R/phi.range.R
R/pifit.internal.R
R/plist.internal.R
R/plot.ppar.r
R/plotCI.R
R/plotDIF.R
R/plotGOF.LR.R
R/plotGOF.R
R/plotGR.R
R/plotICC.R
R/plotICC.Rm.R
R/plotINFO.R
R/plotPImap.R
R/plotPWmap.R
R/plotTR.R
R/plotjointICC.R
R/plotjointICC.dRm.R
R/pmat.R
R/pmat.default.R
R/pmat.ppar.R
R/predict.ppar.R
R/prediction.R
R/print.ICr.r
R/print.LR.R
R/print.MLoef.r
R/print.eRm.R
R/print.gof.R
R/print.ifit.R
R/print.llra.R
R/print.logLik.eRm.R
R/print.logLik.ppar.r
R/print.pfit.R
R/print.ppar.R
R/print.resid.R
R/print.step.r
R/print.summary.llra.R
R/print.threshold.r
R/print.wald.R
R/residuals.ppar.R
R/rostdeviance.r
R/rsampler.R
R/rsctrl.R
R/rserror.R
R/rsextrmat.R
R/rsextrobj.R
R/rstats.R
R/rsunpack.R
R/sim.2pl.R
R/sim.locdep.R
R/sim.rasch.R
R/sim.xdim.R
R/stepwiseIt.R
R/stepwiseIt.eRm.R
R/summary.LR.r
R/summary.MLoef.r
R/summary.RSctr.R
R/summary.RSmpl.R
R/summary.RSmplext.R
R/summary.eRm.R
R/summary.gof.R
R/summary.llra.R
R/summary.ppar.R
R/summary.threshold.r
R/test_info.R
R/thresholds.eRm.r
R/thresholds.r
R/vcov.eRm.R
R/zzz.R
build
build/partial.rdb
build/vignette.rds
data
data/llraDat1.rda
data/llraDat2.rda
data/llradat3.rda
data/lltmdat1.rda
data/lltmdat2.rda
data/lpcmdat.rda
data/lrsmdat.rda
data/pcmdat.rda
data/pcmdat2.rda
data/raschdat1.rda
data/raschdat1_RM_fitted.RData
data/raschdat1_RM_lrres2.RData
data/raschdat1_RM_plotDIF.RData
data/raschdat2.rda
data/raschdat3.rda
data/raschdat4.rda
data/rsmdat.rda
data/xmpl.RData
data/xmplbig.RData
inst
inst/CITATION
inst/NEWS.Rd
inst/NEWS.pdf
inst/doc
inst/doc/eRm.R
inst/doc/eRm.Rnw
inst/doc/eRm.pdf
man
man/IC.Rd
man/LLRA.Rd
man/LLTM.Rd
man/LPCM.Rd
man/LRSM.Rd
man/LRtest.Rd
man/MLoef.Rd
man/NPtest.Rd
man/PCM.Rd
man/RM.Rd
man/RSM.Rd
man/RSctr.Rd
man/RSmpl.Rd
man/RaschSampler.Rd
man/SepRel.Rd
man/Waldtest.Rd
man/anova.eRm.Rd
man/anova.llra.Rd
man/build_W.Rd
man/collapse_W.Rd
man/eRm-package.Rd
man/eRm.data.Rd
man/gofIRT.Rd
man/item_info.Rd
man/itemfit.ppar.Rd
man/llra.datprep.Rd
man/llraDat1.Rd
man/llraDat2.Rd
man/llradat3.Rd
man/person.parameter.Rd
man/phi.range.Rd
man/plotDIF.Rd
man/plotGR.Rd
man/plotICC.Rd
man/plotINFO.Rd
man/plotPImap.Rd
man/plotPWmap.Rd
man/plotTR.Rd
man/predict.ppar.Rd
man/print.eRm.Rd
man/rsampler.Rd
man/rsctrl.Rd
man/rsextrmat.Rd
man/rsextrobj.Rd
man/rstats.Rd
man/sim.2pl.Rd
man/sim.locdep.Rd
man/sim.rasch.Rd
man/sim.xdim.Rd
man/stepwiseIt.Rd
man/summary.RSctr.Rd
man/summary.RSmpl.Rd
man/summary.llra.Rd
man/test_info.Rd
man/thresholds.Rd
man/xmpl.Rd
src
src/RaschSampler.f90
src/components.c
src/components.h
src/geodist.c
src/geodist.h
vignettes
vignettes/UCML.pdf
vignettes/eRm.Rnw
vignettes/eRm_object_tree.pdf
vignettes/eRmvig.bib
vignettes/modelhierarchy.pdf
eRm documentation built on May 21, 2017, 3:51 a.m.