eRm: Extended Rasch Modeling

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).

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
http://r-forge.r-project.org/projects/erm/

View on R-Forge

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

Files in this package

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

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