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sirt (version 0.34-36)

Supplementary Item Response Theory Models

Description

Supplementary item response theory models to complement existing functions in R.

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Version

Install

install.packages('sirt')

Monthly Downloads

2,612

Version

0.34-36

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

August 13th, 2013

Functions in sirt (0.34-36)

person.parameter.rasch.copula

Person Parameter Estimation of the Rasch Copula Model (Braeken, 2011)
data.pisaPars

Item Parameters from two PISA Studies
dif.logistic.regression

Differential Item Functioning using Logistic Regression Analysis
R2noharm.jackknife

Jackknife Estimation of NOHARM Analysis
conf.detect

Confirmatory DETECT Analysis
data.long

Longitudinal Dataset
equating.rasch.jackknife

Jackknife Equating Error in Generalized Logistic Rasch Model
fit.isop

Fitting the ISOP and ADISOP Model for Frequency Tables
eigenvalues.manymatrices

Computation of Eigenvalues of Many Symmetric Matrices
mcmc.list.descriptives

Computation of Descriptive Statistics for a mcmc.list Object
plausible.value.imputation.raschtype

Plausible Value Imputation in Generalized Logistic Item Response Model
rasch.jml.biascorr

Bias Correction of Item Parameters for Joint Maximum Likelihood Estimation in the Rasch model
data.pisaMath

Dataset PISA Mathematics
mcmc.2pno

MCMC Estimation of the Two-Parameter Normal Ogive Item Response Model
dif.variance

DIF Variance
isop

Fit Unidimensional ISOP and ADISOP Model to Dichotomous and Polytomous Item Responses
greenyang.reliability

Reliability for Dichotomous Item Response Data Using the Method of Green and Yang (2009)
np.dich

Nonparametric Estimation of Item Response Functions
data.ratings1

Rating Dataset 1
gom.jml

Grade of Membership Model (Joint Maximum Likelihood Estimation)
R2noharm

Estimation of a NOHARM Analysis from within R
plot.mcmc.sirt

Plot Function for Objects of Class mcmc.sirt
rasch.mirtlc

Multidimensional Latent Class 1PL and 2PL Model
data.math

Dataset Mathematics
data.read

Dataset Reading
dif.strata.variance

Stratified DIF Variance
latent.regression.em.raschtype

Latent Regression Model for the Generalized Logistic Item Response Model
personfit.stat

Person Fit Statistics for the Rasch Model
lsdm

Least Square Distance Method of Cognitive Validation
R2noharm.EAP

EAP Factor Score Estimation
wle.rasch.jackknife

Standard Error Estimation of WLE by Jackknifing
rasch.pairwise

Pairwise Estimation Method of the Rasch Model
sim.rasch.dep

Simulation of the Rasch Model with Locally Dependent Responses
yen.q3

Estimation of the $Q_3$ Statistic (Yen, 1984)
rasch.copula2

Rasch Copula Model
wle.rasch

Weighted Likelihood Estimation of Person Abilities
isop.scoring

Scoring Persons and Items in the ISOP Model
data.noharm

Dataset for NOHARM Analysis
rasch.va

Estimation of the Rasch Model with Variational Approximation
matrixfunctions.sirt

Some Matrix Functions
mcmclist2coda

Write Coda File from an Object of Class mcmc.list
sim.raschtype

Simulate from Generalized Logistic Item Response Model
dirichlet.mle

Maximum Likelihood Estimation of the Dirichlet Distribution
mcmc.2pnoh

MCMC Estimation of the Hierarchical IRT Model for Criterion-Referenced Measurement
pbivnorm2

Bivariate Normal Distribution
data.ml

Multilevel Datasets
rasch.prox

PROX Estimation Method for the Rasch Model
reliability.nonlinearSEM

Estimation of Reliability for Confirmatory Factor Analyses Based on Dichotomous Data
data.big5

Dataset Big 5 from qgraph Package
pgenlogis

Calculation of Probabilities in Generalized Logistic Item Response Models
gom.em

Discrete (Rasch) Grade of Membership Model
prob.guttman

Probabilistic Guttman Model
modelfit.sirt

Model Fit of Item Response Models
data.timss

Dataset TIMSS Mathematics
rasch.jml.jackknife1

Jackknifing the IRT Model Estimated by Joint Maximum Likelihood (JML)
tetrachoric2

Tetrachoric Correlation Matrix
plot.np.dich

Plot Method for Object of Class np.dich
testlet.yen.q3

$Q_3$ Statistic of Yen (1984) for Testlets
rasch.pairwise.itemcluster

Pairwise Estimation of the Rasch Model for Locally Dependent Items
data.pisaRead

Dataset PISA Reading
rasch.testlet.glmer

Estimation of the Rasch Testlet Model using Generalized Linear Mixed Effects Models (lme4)
class.accuracy.rasch

Classification Accuracy in the Rasch Model
qmc.nodes

Calculation of Quasi Monte Carlo Integration Points
mcmc.3pno.testlet

3PNO Testlet Model
rm.facets

Rater Facets Models with Item/Rater Intercepts and Slopes
sirt-package

Supplementary Item Response Theory Models
rasch.pml2

Pairwise Marginal Likelihood Estimation for the Probit Rasch Model
sim.qm.ramsay

Simulate from Ramsay's Quotient Model
expl.detect

Exploratory DETECT Analysis
stratified.cronbach.alpha

Stratified Cronbach's Alpha
marginal.truescore.reliability

True-Score Reliability for Dichotomous Data
summary.mcmc.sirt

Summary Method for Objects of Class mcmc.sirt
rasch.mml2

Estimation of the Generalized Logistic Item Response Model, Ramsay's Quotient Model and a Nonparametric Item Response Model
prmse.subscores.scales

Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scores
ccov.np

Nonparametric Estimation of Conditional Covariances of Item Pairs
monoreg.rowwise

Monotone Regression for Rows or Columns in a Matrix
smirt

Multidimensional Noncompensatory and Compensatory Item Response Model
rm.hrm

Hierachical Rater Model Based on Signal Detection Theory
rasch.jml

Joint Maximum Likelihood (JML) Estimation of the Rasch Model
equating.rasch

Equating in the Generalized Logistic Rasch Model
detect.index

Calculation of the DETECT Index
mcmc.2pno.ml

Random Item Response Model / Multilevel IRT Model
dirichlet.simul

Simulation of a Dirichlet Distributed Vectors