eRm: Extended Rasch Modeling

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.

AuthorPatrick Mair [cre, aut], Reinhold Hatzinger [aut], Marco J. Maier [aut], Thomas Rusch [ctb]
Date of publication2016-11-20 20:11:43
MaintainerPatrick Mair <mair@fas.harvard.edu>
LicenseGPL-2
Version0.15-7
http://r-forge.r-project.org/projects/erm/

View on CRAN

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-Löf'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

anova.eRm Man page
anova.llra Man page
build_catdes Man page
build_effdes Man page
build_trdes Man page
build_W Man page
coef.eRm Man page
coef.ppar Man page
collapse_W Man page
confint.eRm Man page
confint.ppar Man page
confint.threshold Man page
eRm.data Man page
get_item_cats Man page
gofIRT Man page
gofIRT.ppar Man page
IC Man page
IC.ppar Man page
i_info Man page
itemfit Man page
itemfit.ppar Man page
item_info Man page
LLRA Man page
llraDat1 Man page
llraDat2 Man page
llradat3 Man page
llra.datprep Man page
LLTM Man page
lltmdat1 Man page
lltmdat2 Man page
logLik.eRm Man page
logLik.ppar Man page
LPCM Man page
lpcmdat Man page
LRSM Man page
lrsmdat Man page
LRtest Man page
LRtest.Rm Man page
MLoef Man page
model.matrix.eRm Man page
NonparametricTests Man page
NPtest Man page
PCM Man page
pcmdat Man page
pcmdat2 Man page
personfit Man page
personfit.ppar Man page
person.parameter Man page
person.parameter.eRm Man page
phi.range Man page
plotDIF Man page
plotGOF Man page
plotGOF.LR Man page
plotGR Man page
plotICC Man page
plotICC.Rm Man page
plotINFO Man page
plotjointICC Man page
plotjointICC.dRm Man page
plotPImap Man page
plot.ppar Man page
plotPWmap Man page
plotTR Man page
pmat Man page
pmat.ppar Man page
predict.ppar Man page
print.eRm Man page
print.eRm_anova Man page
print.eRm_SepRel Man page
print.gof Man page
print.ifit Man page
print.llra Man page
print.logLik.ppar Man page
print.LR Man page
print.MLoef Man page
print.pfit Man page
print.ppar Man page
print.resid Man page
print.step Man page
print.summary.llra Man page
print.threshold Man page
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
RaschSampler Man page
residuals.ppar Man page
RM Man page
rsampler Man page
RSctr Man page
rsctrl Man page
rsextrmat Man page
rsextrobj Man page
RSM Man page
rsmdat Man page
RSmpl Man page
RSmplext Man page
rstats Man page
SepRel Man page
sim.2pl Man page
sim.locdep Man page
sim.rasch Man page
sim.xdim Man page
stepwiseIt Man page
stepwiseIt.eRm Man page
summary.eRm Man page
summary.eRm_SepRel Man page
summary.gof Man page
summary.llra Man page
summary.LR Man page
summary.MLoef Man page
summary.ppar Man page
summary.RSctr Man page
summary.RSmpl Man page
summary.RSmplext Man page
summary.threshold Man page
test_info Man page
thresholds Man page
thresholds.eRm Man page
vcov.eRm Man page
Waldtest Man page
Waldtest.Rm Man page
xmpl Man page
xmplbig Man page

Files

eRm
eRm/inst
eRm/inst/CITATION
eRm/inst/NEWS.pdf
eRm/inst/NEWS.Rd
eRm/inst/doc
eRm/inst/doc/eRm.Rnw
eRm/inst/doc/eRm.R
eRm/inst/doc/eRm.pdf
eRm/src
eRm/src/components.c
eRm/src/geodist.c
eRm/src/geodist.h
eRm/src/RaschSampler.f90
eRm/src/components.h
eRm/NAMESPACE
eRm/NEWS
eRm/data
eRm/data/raschdat2.rda
eRm/data/llraDat2.rda
eRm/data/raschdat1.rda
eRm/data/raschdat1_RM_plotDIF.RData
eRm/data/raschdat3.rda
eRm/data/xmplbig.RData
eRm/data/pcmdat.rda
eRm/data/raschdat4.rda
eRm/data/xmpl.RData
eRm/data/raschdat1_RM_lrres2.RData
eRm/data/lltmdat2.rda
eRm/data/raschdat1_RM_fitted.RData
eRm/data/llradat3.rda
eRm/data/lrsmdat.rda
eRm/data/rsmdat.rda
eRm/data/llraDat1.rda
eRm/data/lpcmdat.rda
eRm/data/pcmdat2.rda
eRm/data/lltmdat1.rda
eRm/R
eRm/R/thresholds.r
eRm/R/print.ifit.R eRm/R/sim.rasch.R
eRm/R/confint.eRm.r
eRm/R/print.pfit.R eRm/R/anova.llra.R eRm/R/RSM.R eRm/R/personfit.R
eRm/R/print.ICr.r
eRm/R/summary.MLoef.r
eRm/R/summary.RSctr.R eRm/R/LLRA.R
eRm/R/cwdeviance.r
eRm/R/rsunpack.R eRm/R/plotTR.R
eRm/R/IC.r
eRm/R/cmlprep.R eRm/R/coef.ppar.R eRm/R/IC.default.R
eRm/R/datcheck.LRtest.r
eRm/R/pmat.R eRm/R/performance_measures.R eRm/R/print.eRm.R eRm/R/gofIRT.ppar.R eRm/R/plist.internal.R eRm/R/print.gof.R eRm/R/LRSM.R eRm/R/plotPWmap.R eRm/R/plotjointICC.R eRm/R/Waldtest.R eRm/R/cldeviance.R eRm/R/ROCR_aux.R eRm/R/Waldtest.Rm.R eRm/R/person.parameter.R eRm/R/model.matrix.eRm.R eRm/R/rsextrmat.R
eRm/R/confint.ppar.r
eRm/R/print.threshold.r
eRm/R/plotDIF.R
eRm/R/print.step.r
eRm/R/summary.gof.R eRm/R/plotICC.R eRm/R/rsampler.R eRm/R/Rsquared.R eRm/R/itemfit.ppar.R eRm/R/plotjointICC.dRm.R
eRm/R/print.MLoef.r
eRm/R/summary.RSmplext.R
eRm/R/rostdeviance.r
eRm/R/plotICC.Rm.R eRm/R/phi.range.R eRm/R/itemfit.R eRm/R/coef.eRm.R
eRm/R/labeling.internal.r
eRm/R/rsctrl.R eRm/R/rserror.R eRm/R/print.llra.R eRm/R/LRtest.Rm.R eRm/R/vcov.eRm.R eRm/R/pmat.ppar.R eRm/R/checkdata.R eRm/R/print.LR.R eRm/R/item_info.R eRm/R/print.resid.R
eRm/R/logLik.ppar.r
eRm/R/plotGOF.LR.R eRm/R/sim.xdim.R eRm/R/print.summary.llra.R
eRm/R/plot.ppar.r
eRm/R/pmat.default.R eRm/R/plotPImap.R eRm/R/invalid.R eRm/R/llra.internals.R eRm/R/hoslem.R eRm/R/build_W.R eRm/R/NPtest.R eRm/R/sim.locdep.R eRm/R/datprep_RM.R eRm/R/PCM.R eRm/R/datprep_LPCM.R eRm/R/summary.eRm.R eRm/R/person.parameter.eRm.R
eRm/R/IC.ppar.r
eRm/R/logLik.eRm.r
eRm/R/llra.datprep.R eRm/R/plotGOF.R eRm/R/summary.llra.R eRm/R/datprep_LRSM.R eRm/R/prediction.R eRm/R/gofIRT.R eRm/R/plotGR.R eRm/R/MLoef.R eRm/R/print.ppar.R eRm/R/SepRel.R
eRm/R/confint.threshold.r
eRm/R/summary.threshold.r
eRm/R/datprep_RSM.R eRm/R/rstats.R eRm/R/datprep_PCM.R
eRm/R/summary.LR.r
eRm/R/sim.2pl.R eRm/R/datcheck.R eRm/R/collapse_W.R eRm/R/fitcml.R eRm/R/pifit.internal.R eRm/R/performance_plots.R eRm/R/plotCI.R eRm/R/stepwiseIt.eRm.R eRm/R/test_info.R eRm/R/print.wald.R eRm/R/RM.R eRm/R/summary.ppar.R
eRm/R/thresholds.eRm.r
eRm/R/residuals.ppar.R eRm/R/personfit.ppar.R eRm/R/predict.ppar.R eRm/R/zzz.R eRm/R/performance.R eRm/R/rsextrobj.R eRm/R/likLR.R eRm/R/plotINFO.R
eRm/R/print.logLik.ppar.r
eRm/R/stepwiseIt.R eRm/R/LPCM.R eRm/R/LRtest.R eRm/R/LLTM.R eRm/R/summary.RSmpl.R eRm/R/datprep_LLTM.R eRm/R/print.logLik.eRm.R eRm/R/anova.eRm.R
eRm/vignettes
eRm/vignettes/eRm.Rnw
eRm/vignettes/modelhierarchy.pdf
eRm/vignettes/eRm_object_tree.pdf
eRm/vignettes/eRmvig.bib
eRm/vignettes/UCML.pdf
eRm/MD5
eRm/build
eRm/build/vignette.rds
eRm/build/partial.rdb
eRm/DESCRIPTION
eRm/man
eRm/man/LRtest.Rd eRm/man/sim.locdep.Rd eRm/man/rsextrmat.Rd eRm/man/plotDIF.Rd eRm/man/RaschSampler.Rd eRm/man/build_W.Rd eRm/man/sim.xdim.Rd eRm/man/LPCM.Rd eRm/man/eRm.data.Rd eRm/man/rsctrl.Rd eRm/man/summary.llra.Rd eRm/man/test_info.Rd
eRm/man/eRm-package.Rd
eRm/man/xmpl.Rd eRm/man/gofIRT.Rd eRm/man/rsampler.Rd eRm/man/llra.datprep.Rd eRm/man/RM.Rd eRm/man/anova.eRm.Rd eRm/man/item_info.Rd eRm/man/summary.RSmpl.Rd eRm/man/person.parameter.Rd eRm/man/stepwiseIt.Rd eRm/man/LLRA.Rd eRm/man/plotICC.Rd eRm/man/phi.range.Rd eRm/man/plotINFO.Rd eRm/man/llradat3.Rd eRm/man/plotTR.Rd eRm/man/anova.llra.Rd eRm/man/NPtest.Rd eRm/man/RSctr.Rd eRm/man/thresholds.Rd eRm/man/plotPWmap.Rd eRm/man/PCM.Rd eRm/man/collapse_W.Rd eRm/man/itemfit.ppar.Rd eRm/man/RSmpl.Rd eRm/man/LLTM.Rd eRm/man/Waldtest.Rd eRm/man/rstats.Rd eRm/man/IC.Rd eRm/man/LRSM.Rd eRm/man/RSM.Rd eRm/man/predict.ppar.Rd eRm/man/print.eRm.Rd eRm/man/llraDat1.Rd eRm/man/MLoef.Rd eRm/man/sim.2pl.Rd eRm/man/rsextrobj.Rd eRm/man/plotGR.Rd eRm/man/plotPImap.Rd eRm/man/sim.rasch.Rd eRm/man/SepRel.Rd eRm/man/summary.RSctr.Rd eRm/man/llraDat2.Rd
eRm/.Rinstignore

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