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sirt (version 0.31-20)

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

0.31-20

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

May 29th, 2013

Functions in sirt (0.31-20)

pbivnorm2

Bivariate Normal Distribution
data.timss

Dataset TIMSS Mathematics
equating.rasch

Equating in the Generalized Logistic Rasch Model
sim.raschtype

Simulate from Generalized Logistic Item Response Model
gom.em

Discrete (Rasch) Grade of Membership Model
jackknife.rasch.jml

Jackknifing the IRT Model Estimated by Joint Maximum Likelihood (JML)
modelfit.sirt

Model Fit of Item Response Models
summary.rasch.pairwise

Summary Method for Objects of Class rasch.pairwise
dif.logistic.regression

Differential Item Functioning using Logistic Regression Analysis
summary.lsdm

Summary Method for Objects of Class lsdm
data.read

Dataset Reading
rm.facets

Rater Facets Models with Item/Rater Intercepts and Slopes
gom.jml

Grade of Membership Model (Joint Maximum Likelihood Estimation)
tetrachoric2

Tetrachoric Correlation Matrix
summary.rm.facets

Summary Method for Objects of Class rm.facets
data.long

Longitudinal Dataset
greenyang.reliability

Reliability for Dichotomous Item Response Data Using the Method of Green and Yang (2009)
data.ratings1

Rating Dataset 1
data.pisaRead

Dataset PISA Reading
np.dich

Nonparametric Estimation of Item Response Functions
stratified.cronbach.alpha

Stratified Cronbach's Alpha
rasch.copula2

Rasch Copula Model
expl.detect

Exploratory DETECT Analysis
latent.regression.em.raschtype

Latent Regression Model for the Generalized Logistic Item Response Model
wle.rasch.jackknife

Standard Error Estimation of WLE by Jackknifing
ccov.np

Nonparametric Estimation of Conditional Covariances of Item Pairs
rasch.pairwise.itemcluster

Pairwise Estimation of the Rasch Model for Locally Dependent Items
dirichlet.simul

Simulation of a Dirichlet Distributed Vectors
plot.np.dich

Plot Method for Object of Class np.dich
rasch.mml2

Estimation of the Generalized Logistic Item Response Model, Ramsay's Quotient Model and a Nonparametric Item Response Model
plausible.value.imputation.raschtype

Plausible Value Imputation in Generalized Logistic Item Response Model
wle.rasch

Weighted Likelihood Estimation of Person Abilities
qmc.nodes

Calculation of Quasi Monte Carlo Integration Points
summary.prob.guttman

Summary Method for Objects of Class prob.guttman
yen.q3

Estimation of the $Q_3$ Statistic (Yen, 1984)
testlet.yen.q3

$Q_3$ Statistic of Yen (1984) for Testlets
person.parameter.rasch.copula

Person Parameter Estimation of the Rasch Copula Model (Braeken, 2011)
equating.rasch.jackknife

Jackknife Equating Error in Generalized Logistic Rasch Model
summary.rm.hrm

Summary Method for Objects of Class rm.hrm
summary.rasch.pml

Summary Method for Objects of Class rasch.pml
summary.rasch.copula2

Summary Method for Objects of Class rasch.copula2
summary.rasch.mml

Summary Method for Objects of Class rasch.mml
rasch.pairwise

Pairwise Estimation Method of the Rasch Model
rasch.mirtlc

Multidimensional Latent Class 1PL and 2PL Model
rasch.jml

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

Estimation of the Rasch Model with Variational Approximation
lsdm

Least Square Distance Method of Cognitive Validation
smirt

Multidimensional Noncompensatory and Compensatory Item Response Model
reliability.nonlinearSEM

Estimation of Reliability for Confirmatory Factor Analyses Based on Dichotomous Data
dirichlet.mle

Maximum Likelihood Estimation of the Dirichlet Distribution
pgenlogis

Calculation of Probabilities in Generalized Logistic Item Response Models
sim.rasch.dep

Simulation of the Rasch Model with Locally Dependent Responses
rm.hrm

Hierachical Rater Model Based on Signal Detection Theory
conf.detect

Confirmatory DETECT Analysis
marginal.truescore.reliability

True-Score Reliability for Dichotomous Data
class.accuracy.rasch

Classification Accuracy in the Rasch Model
data.math

Dataset Mathematics
rasch.jml.biascorr

Bias Correction of Item Parameters for Joint Maximum Likelihood Estimation in the Rasch model
prob.guttman

Probabilistic Guttman Model
sim.qm.ramsay

Simulate from Ramsay's Quotient Model
summary.gom

Summary Method for Objects of Class gom
data.pisaMath

Dataset PISA Mathematics
sirt-package

Supplementary Item Response Theory Models
rasch.prox

PROX Estimation Method for the Rasch Model
summary.rasch.mirtlc

Summary Method for Objects of Class rasch.mirtlc
dif.strata.variance

Stratified DIF Variance
summary.smirt

Summary Method for Objects of Class smirt
dif.variance

DIF Variance
personfit.stat

Person Fit Statistics for the Rasch Model
data.pisaPars

Item Parameters from two PISA Studies
eigenvalues.manymatrices

Computation of Eigenvalues of Many Symmetric Matrices
rasch.pml2

Pairwise Marginal Likelihood Estimation for the Probit Rasch Model
detect.index

Calculation of the DETECT Index
prmse.subscores.scales

Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scores
rasch.testlet.glmer

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

Summary Method for Objects of Class rasch.jml