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sirt (version 1.14-0)

Supplementary Item Response Theory Models

Description

Supplementary item response theory models to complement existing functions in R, including multidimensional compensatory and noncompensatory IRT models, MCMC for hierarchical IRT models and testlet models, NOHARM, Rasch copula model, faceted and hierarchical rater models, ordinal IRT model (ISOP), DETECT statistic, local structural equation modeling (LSEM), mean and covariance structure modelling for multivariate normally distributed data.

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Version

Install

install.packages('sirt')

Monthly Downloads

2,917

Version

1.14-0

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

January 11th, 2017

Functions in sirt (1.14-0)

ccov.np

Nonparametric Estimation of Conditional Covariances of Item Pairs
categorize

Categorize and Decategorize Variables in a Data Frame
amh

Bayesian Model Estimation with Adaptive Metropolis Hastings Sampling (amh) or Penalized Maximum Likelihood Estimation (pmle)
automatic.recode

Automatic Method of Finding Keys in a Dataset with Raw Item Responses
data.bs

Datasets from Borg and Staufenbiel (2007)
CallSwitch

Switching between Calls of R Function and Rcpp Function
class.accuracy.rasch

Classification Accuracy in the Rasch Model
data.activity.itempars

Item Parameters Cultural Activities
conf.detect

Confirmatory DETECT and polyDETECT Analysis
data.big5

Dataset Big 5 from qgraph Package
data.long

Longitudinal Dataset
data.lsem

Datasets for Local Structural Equation Models / Moderated Factor Analysis
data.math

Dataset Mathematics
data.inv4gr

Dataset for Invariance Testing with 4 Groups
data.mcdonald

Some Datasets from McDonald's Test Theory Book
data.mixed1

Dataset with Mixed Dichotomous and Polytomous Item Responses
data.liking.science

Dataset 'Liking For Science'
data.ml

Multilevel Datasets
data.ess2005

Dataset European Social Survey 2005
data.g308

C-Test Datasets
data.pisaPars

Item Parameters from Two PISA Studies
data.pisaRead

Dataset PISA Reading
data.pw

Datasets for Pairwise Comparisons
data.wide2long

Converting a Data Frame from Wide Format in a Long Format
data.ratings

Rating Datasets
detect.index

Calculation of the DETECT and polyDETECT Index
data.noharm

Datasets for NOHARM Analysis
data.pars1.rasch

Item Parameters for Three Studies Obtained by 1PL and 2PL Estimation
dif.strata.variance

Stratified DIF Variance
dif.logistic.regression

Differential Item Functioning using Logistic Regression Analysis
expl.detect

Exploratory DETECT Analysis
fit.isop

Fitting the ISOP and ADISOP Model for Frequency Tables
data.reck

Datasets from Reckase' Book Multidimensional Item Response Theory
data.pisaMath

Dataset PISA Mathematics
data.pirlsmissing

Dataset from PIRLS Study with Missing Responses
data.sirt

Some Example Datasets for the sirt Package
greenyang.reliability

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

Grade of Membership Model (Joint Maximum Likelihood Estimation)
dirichlet.simul

Simulation of a Dirichlet Distributed Vectors
lsem.permutationTest

Permutation Test for a Local Structural Equation Model
eigenvalues.manymatrices

Computation of Eigenvalues of Many Symmetric Matrices
linking.robust

Robust Linking of Item Intercepts
likelihood.adjustment

Adjustment and Approximation of Individual Likelihood Functions
mcmc_coef

Some Methods for Objects of Class mcmc.list
matrixfunctions.sirt

Some Matrix Functions
dif.variance

DIF Variance
fuzdiscr

Estimation of a Discrete Distribution for Fuzzy Data (Data in Belief Function Framework)
fuzcluster

Clustering for Continuous Fuzzy Data
dirichlet.mle

Maximum Likelihood Estimation of the Dirichlet Distribution
IRT.mle

Person Parameter Estimation
isop.test

Testing the ISOP Model
mcmc.list.descriptives

Computation of Descriptive Statistics for a mcmc.list Object
mcmc_Rhat

Computation of the Rhat Statistic from a Single MCMC Chain
parmsummary_extend

Includes Confindence Interval in Parameter Summary Table
np.dich

Nonparametric Estimation of Item Response Functions
R2noharm.jackknife

Jackknife Estimation of NOHARM Analysis
R2noharm.EAP

EAP Factor Score Estimation
sirt-defunct

Defunct sirt Functions
data.raw1

Dataset with Raw Item Responses
data.read

Dataset Reading
latent.regression.em.raschtype

Latent Regression Model for the Generalized Logistic Item Response Model and the Linear Model for Normal Responses
lavaan2mirt

Converting a lavaan Model into a mirt Model
modelfit.sirt

Assessing Model Fit and Local Dependence by Comparing Observed and Expected Item Pair Correlations
data.timss

Dataset TIMSS Mathematics
monoreg.rowwise

Monotone Regression for Rows or Columns in a Matrix
equating.rasch.jackknife

Jackknife Equating Error in Generalized Logistic Rasch Model
data.timss07.G8.RUS

TIMSS 2007 Grade 8 Mathematics and Science Russia
loglike_mvnorm

Log-Likelihood Value of a Multivariate Normal Distribution
eigenvalues.sirt

First Eigenvalues of a Symmetric Matrix
lsem.estimate

Local Structural Equation Models (LSEM)
mcmclist2coda

Write Coda File from an Object of Class mcmc.list
md.pattern.sirt

Response Pattern in a Binary Matrix
plot.mcmc.sirt

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

Joint Maximum Likelihood (JML) Estimation of the Rasch Model
plot.np.dich

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

Multidimensional Latent Class 1PL and 2PL Model
mirt.wrapper

Some Functions for Wrapping with the mirt Package
marginal.truescore.reliability

True-Score Reliability for Dichotomous Data
mirt.specify.partable

Specify or modify a Parameter Table in mirt
qmc.nodes

Calculation of Quasi Monte Carlo Integration Points
R2conquest

Running ConQuest From Within R
rasch.prox

PROX Estimation Method for the Rasch Model
rasch.va

Estimation of the Rasch Model with Variational Approximation
starts_cov

Some Functions for the STARTS model
sirt-utilities

Utility Functions in sirt
tetrachoric2

Tetrachoric Correlation Matrix
tam2mirt

Converting a fitted TAM Object into a mirt Object
prior_model_parse

Parsing a Prior Model
polychoric2

Polychoric Correlation
Q3

Estimation of the $Q_3$ Statistic (Yen, 1984)
Q3.testlet

$Q_3$ Statistic of Yen (1984) for Testlets
rasch.jml.biascorr

Bias Correction of Item Parameters for Joint Maximum Likelihood Estimation in the Rasch model
xxirt_createThetaDistribution

Creates a User Defined Theta Distribution
xxirt_createParTable

Create Item Response Functions and Item Parameter Table
pbivnorm2

Cumulative Function for the Bivariate Normal Distribution
rasch.jml.jackknife1

Jackknifing the IRT Model Estimated by Joint Maximum Likelihood (JML)
sirt-package

Supplementary Item Response Theory Models
prmse.subscores.scales

Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scores
pcm.fit

Item and Person Fit Statistics for the Partial Credit Model
prob.guttman

Probabilistic Guttman Model
reliability.nonlinearSEM

Estimation of Reliability for Confirmatory Factor Analyses Based on Dichotomous Data
rinvgamma2

Inverse Gamma Distribution in Prior Sample Size Parameterization
person.parameter.rasch.copula

Person Parameter Estimation of the Rasch Copula Model (Braeken, 2011)
rasch.evm.pcm

Estimation of the Partial Credit Model using the Eigenvector Method
rasch.copula2

Multidimensional IRT Copula Model
rasch.pairwise

Pairwise Estimation Method of the Rasch Model
personfit.stat

Person Fit Statistics for the Rasch Model
rasch.pml3

Pairwise Marginal Likelihood Estimation for the Probit Rasch Model
sia.sirt

Statistical Implicative Analysis (SIA)
rm.facets

Rater Facets Models with Item/Rater Intercepts and Slopes
sim.rasch.dep

Simulation of the Rasch Model with Locally Dependent Responses
sim.raschtype

Simulate from Generalized Logistic Item Response Model
wle.rasch.jackknife

Standard Error Estimation of WLE by Jackknifing
stratified.cronbach.alpha

Stratified Cronbach's Alpha
wle.rasch

Weighted Likelihood Estimation of Person Abilities
xxirt

User Defined Item Response Model
summary.mcmc.sirt

Summary Method for Objects of Class mcmc.sirt