sirt4.1-15 package

Bias Correction of Item Parameters for Joint Maximum Likelihood Estima...

Converting a Data Frame from Wide Format in a Long Format

Calculation of the DETECT and polyDETECT Index

Differential Item Functioning using Logistic Regression Analysis

Stratified DIF Variance

DIF Variance

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

Functions for the Beta Item Response Model

Extended Bradley-Terry Model

Categorize and Decategorize Variables in a Data Frame

Nonparametric Estimation of Conditional Covariances of Item Pairs

Estimation of a Unidimensional Factor Model under Full and Partial Mea...

Classification Accuracy in the Rasch Model

Confirmatory DETECT and polyDETECT Analysis

Datasets from Borg and Staufenbiel (2007)

Datasets for Local Structural Equation Models / Moderated Factor Analy...

Some Datasets from McDonald's Test Theory Book

Multilevel Datasets

Datasets for NOHARM Analysis

Datasets from Reckase' Book Multidimensional Item Response Theory

Some Example Datasets for the sirt Package

Maximum Likelihood Estimation of the Dirichlet Distribution

Simulation of a Dirichlet Distributed Vectors

Comparing Regression Parameters of Different lavaan Models Fitted to t...

Computation of Eigenvalues of Many Symmetric Matrices

Jackknife Equating Error in Generalized Logistic Rasch Model

Equating in the Generalized Logistic Rasch Model

Exploratory DETECT Analysis

Functional Unidimensional Item Response Model

Fitting the ISOP and ADISOP Model for Frequency Tables

Clustering for Continuous Fuzzy Data

Estimation of a Discrete Distribution for Fuzzy Data (Data in Belief F...

Discrete (Rasch) Grade of Membership Model

Grade of Membership Model (Joint Maximum Likelihood Estimation)

Reliability for Dichotomous Item Response Data Using the Method of Gre...

Alignment Procedure for Linking under Approximate Invariance

Person Parameter Estimation

Fit Unidimensional ISOP and ADISOP Model to Dichotomous and Polytomous...

Scoring Persons and Items in the ISOP Model

Testing the ISOP Model

Latent Regression Model for the Generalized Logistic Item Response Mod...

Converting a lavaan Model into a mirt Model

Latent Class Model for Two Exchangeable Raters and One Item

Adjustment and Approximation of Individual Likelihood Functions

Linking in the 2PL/Generalized Partial Credit Model

Haebara Linking of the 2PL Model for Multiple Studies

Robust Linking of Item Intercepts

Fit of a $L_q$ Regression Model

Least Squares Distance Method of Cognitive Validation

Local Structural Equation Models (LSEM)

Permutation Test for a Local Structural Equation Model

Test a Local Structural Equation Model Based on Bootstrap

True-Score Reliability for Dichotomous Data

Some Matrix Functions

Random Item Response Model / Multilevel IRT Model

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

MCMC Estimation of the Hierarchical IRT Model for Criterion-Referenced...

3PNO Testlet Model

Computation of Descriptive Statistics for a mcmc.list Object

Some Methods for Objects of Class mcmc.list

Computation of the Rhat Statistic from a Single MCMC Chain

Write Coda File from an Object of Class mcmc.list

Response Pattern in a Binary Matrix

Estimation of Multiple-Group Structural Equation Models

Specify or modify a Parameter Table in mirt

Some Functions for Wrapping with the mirt Package

Maximum Likelihood Estimation of Person or Group Parameters in the Gen...

Assessing Model Fit and Local Dependence by Comparing Observed and Exp...

Monotone Regression for Rows or Columns in a Matrix

Functions for the Nedelsky Model

NOHARM Model in

Nonparametric Estimation of Item Response Functions

Includes Confidence Interval in Parameter Summary Table

Cumulative Function for the Bivariate Normal Distribution

Conversion of the Parameterization of the Partial Credit Model

Item and Person Fit Statistics for the Partial Credit Model

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

Person Fit Statistics for the Rasch Model

Calculation of Probabilities and Moments for the Generalized Logistic ...

Plausible Value Imputation in Generalized Logistic Item Response Model

Plot Function for Objects of Class mcmc.sirt

Plot Method for Object of Class np.dich

Polychoric Correlation

Parsing a Prior Model

Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scor...

Probabilistic Guttman Model

Estimation of the $Q_3$ Statistic (Yen, 1984)

$Q_3$ Statistic of Yen (1984) for Testlets

Calculation of Quasi Monte Carlo Integration Points

Running ConQuest From Within

EAP Factor Score Estimation

Jackknife Estimation of NOHARM Analysis

Estimation of a NOHARM Analysis from within

Multidimensional IRT Copula Model

Estimation of the Partial Credit Model using the Eigenvector Method

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

Joint Maximum Likelihood (JML) Estimation of the Rasch Model

Multidimensional Latent Class 1PL and 2PL Model

Estimation of the Generalized Logistic Item Response Model, Ramsay's Q...

Pairwise Estimation of the Rasch Model for Locally Dependent Items

Pairwise Estimation Method of the Rasch Model

Pairwise Marginal Likelihood Estimation for the Probit Rasch Model

PROX Estimation Method for the Rasch Model

Estimation of the Rasch Model with Variational Approximation

Estimation of Reliability for Confirmatory Factor Analyses Based on Di...

Creates Group-Wise Item Response Dataset

Inverse Gamma Distribution in Prior Sample Size Parameterization

Rater Facets Models with Item/Rater Intercepts and Slopes

Hierarchical Rater Model Based on Signal Detection Theory (HRM-SDT)

Simulation of a Multivariate Normal Distribution with Exact Moments

Scaling of Group Means and Standard Deviations

Statistical Implicative Analysis (SIA)

Simulate from Ramsay's Quotient Model

Simulation of the Rasch Model with Locally Dependent Responses

Simulate from Generalized Logistic Item Response Model

Defunct sirt Functions

tools:::Rd_package_title("sirt")

Utility Functions in sirt

First Eigenvalues of a Symmetric Matrix

Multidimensional Noncompensatory, Compensatory and Partially Compensat...

Stratified Cronbach's Alpha

Summary Method for Objects of Class mcmc.sirt

Converting a fitted TAM Object into a mirt Object

Marginal Item Parameters from a Testlet (Bifactor) Model

Tetrachoric Correlation Matrix

Conversion of Trait Scores $\theta$ into True Scores $\tau ( \theta )$

Test for Unidimensionality of CSN

Standard Error Estimation of WLE by Jackknifing

Weighted Likelihood Estimation of Person Abilities

User Defined Item Response Model

Create Item Response Functions and Item Parameter Table

Creates a User Defined Theta Distribution