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CDM (version 3.4-21)

Cognitive Diagnosis Modeling

Description

Functions for cognitive diagnosis modeling and multidimensional item response modeling for dichotomous and polytomous data. This package enables the estimation of the DINA and DINO model, the multiple group (polytomous) GDINA model, the multiple choice DINA model, the general diagnostic model (GDM), the multidimensional linear compensatory item response model and the structured latent class model (SLCA).

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Version

Install

install.packages('CDM')

Monthly Downloads

3,356

Version

3.4-21

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

August 31st, 2014

Functions in CDM (3.4-21)

data.cdm

Several Datasets for the CDM Package
data.timss03.G8.su

TIMSS 2003 Mathematics 8th Grade (Su et al., 2013)
data.fraction1

Fraction Subtraction Dataset 1
data.timss07.G4.lee

TIMSS 2007 Mathematics 4th Grade (Lee et al., 2011)
data.fraction2

Fraction Subtraction Dataset 2
Data-sim

Artificial Data: DINA and DINO
cdm.est.class.accuracy

Classification Reliability in a CDM
data.hr

Dataset data.hr (Ravand et al., 2013)
CDM-package

Cognitive Diagnosis Modeling: The RPackage CDM
data.dcm

Dataset from Book 'Diagnostic Measurement' of Rupp, Templin and Henson (2010)
gdina.dif

Differential Item Functioning in the GDINA Model
data.ecpe

Dataset ECPE
data.Students

Dataset Student Questionnaire
coef

Extract Estimated Item Parameters
data.dtmr

DTMR Fraction Data (Bradshaw et al., 2014)
gdd

Generalized Distance Discriminating Method
din.validate.qmatrix

Q-Matrix Validation (Q-Matrix Modification) for Mixed DINA/DINO Model
din.deterministic

Deterministic Classification and Joint Maximum Likelihood Estimation of the Mixed DINA/DINO Model
anova.din

Likelihood Ratio Test for Model Comparisons
ideal.response.pattern

Ideal Response Pattern
data.pgdina

Dataset for Polytomous GDINA Model
din.equivalent.class

Calculation of Equivalent Skill Classes in the DINA/DINO Model
data.melab

MELAB Data (Li, 2011)
sim.din

Data Simulation Tool for DINA, DINO and mixed DINA and DINO Data
data.sda6

Dataset SDA6 (Jurich & Bradshaw, 2014)
gdina

Function for Estimating the Generalized DINA (GDINA) Model
equivalent.dina

Determination of a Statistically Equivalent DINA Model
itemfit.rmsea

RMSEA Item Fit
mcdina

Multiple Choice DINA Model
fraction.subtraction.qmatrix

Fraction Subtraction Q-Matrix
sequential.items

Constructing a Dataset with Sequential Pseudo Items for Ordered Item Responses
print.din

Print Method for Objects of Class din
fraction.subtraction.data

Fraction Subtraction Data
data.jang

Dataset Jang (2009)
plot.din

Plot Method for Objects of Class din
print.summary.din

Print Method for Objects of Class summary.din
sim.gdina

Simulation of the GDINA model
slca

Structured Latent Class Analysis (SLCA)
logLik

Extract Log-Likelihood
summary.din

Summary Method for Objects of Class din
gdm

General Diagnostic Model
skillspace.approximation

Skill Space Approximation
data.mg

Large-Scale Dataset with Multiple Groups
modelfit.cor

Assessing Model Fit and Local Dependence by Comparing Observed and Expected Item Pair Correlations
gdina.wald

Wald Statistic for Item Fit of the DINA and ACDM Rule for GDINA Model
skill.cor

Tetrachoric or Polychoric Correlations between Attributes
cdi.kli

Cognitive Diagnostic Indices based on Kullback-Leibler Information
din

Parameter Estimation for Mixed DINA/DINO Model
itemfit.sx2

S-X2 Item Fit Statistic for Dichotomous Data
skillspace.hierarchy

Creation of a Hierarchical Skill Space