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CDM (version 2.7-7)

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 and the general diagnostic model (GDM) which contains the multidimensional linear compensatory item response model as a special case.

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Version

Install

install.packages('CDM')

Monthly Downloads

3,438

Version

2.7-7

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

January 30th, 2014

Functions in CDM (2.7-7)

data.hr

Dataset data.hr (Ravand et al., 2013)
data.ecpe

Dataset ECPE
data.jang

Dataset Jang (2009)
coef

Extract Estimated Item Parameters
sequential.items

Constructing a Dataset with Sequential Pseudo Items for Ordered Item Responses
cdm.est.class.accuracy

Classification Reliability in a CDM
anova.din

Likelihood Ratio Test for Model Comparisons
data.Students

Dataset Student Questionnaire
din.deterministic

Deterministic Classification and Joint Maximum Likelihood Estimation of the Mixed DINA/DINO Model
fraction.subtraction.data

Fraction Subtraction Data
data.dtmr

DTMR Fraction Data (Bradshaw et al., 2014)
data.fraction1

Fraction Subtraction Dataset 1
plot.din

Plot Method for Objects of Class din
cdi.kli

Cognitive Diagnostic Indices based on Kullback-Leibler Information
ideal.response.pattern

Ideal Response Pattern
Data-sim

Artificial Data: DINA and DINO
data.melab

MELAB Data (Li, 2011)
data.mg

Large-Scale Dataset with Multiple Groups
din.validate.qmatrix

Q-Matrix Validation (Q-Matrix Modification) for Mixed DINA/DINO Model
data.fraction2

Fraction Subtraction Dataset 2
din.equivalent.class

Calculation of Equivalent Skill Classes in the DINA/DINO Model
data.timss03.G8.su

TIMSS 2003 Mathematics 8th Grade (Su et al., 2013)
skillspace.approximation

Skill Space Approximation
summary.din

Summary Method for Objects of Class din
sim.gdina

Simulation of the GDINA model
logLik

Extract Log-Likelihood
din

Parameter Estimation for Mixed DINA/DINO Model
sim.din

Data Simulation Tool for DINA, DINO and mixed DINA and DINO Data
skillspace.hierarchy

Creation of a Hierarchical Skill Space
data.sda6

Dataset SDA6 (Jurich & Bradshaw, 2014)
data.pgdina

Dataset for Polytomous GDINA Model
fraction.subtraction.qmatrix

Fraction Subtraction Q-Matrix
itemfit.rmsea

RMSEA Item Fit
modelfit.cor

Assessing Model Fit and Local Dependence by Comparing Observed and Expected Item Pair Correlations
equivalent.dina

Determination of a Statistically Equivalent DINA Model
data.timss07.G4.lee

TIMSS 2007 Mathematics 4th Grade (Lee et al., 2011)
skill.cor

Tetrachoric Correlations between Attributes
CDM-internal

Internal CDM Functions
itemfit.sx2

S-X2 Item Fit Statistic For Dichotomous Data
CDM-package

Cognitive Diagnosis Modeling: The RPackage CDM
gdm

General Diagnostic Model
print.summary.din

Print Method for Objects of Class summary.din
data.dcm

Dataset from Book 'Diagnostic Measurement' of Rupp, Templin and Henson (2010)
gdd

Generalized Distance Discriminating Method
print.din

Print Method for Objects of Class din
gdina

Function for Estimating the Generalized DINA (GDINA) Model