CDM: Cognitive Diagnosis Modeling

Functions for cognitive diagnosis modeling and multidimensional item response modeling for dichotomous and polytomous item responses. This package enables the estimation of the DINA and DINO model (Junker & Sijtsma, 2001, <doi:10.1177/01466210122032064>), the multiple group (polytomous) GDINA model (de la Torre, 2011, <doi:10.1007/s11336-011-9207-7>), the multiple choice DINA model (de la Torre, 2009, <doi:10.1177/0146621608320523>), the general diagnostic model (GDM; von Davier, 2008, <doi:10.1348/000711007X193957>), the structured latent class model (SLCA; Formann, 1992, <doi:10.1080/01621459.1992.10475229>) and regularized latent class analysis (Chen, Li, Liu, & Ying, 2017, <doi:10.1007/s11336-016-9545-6>). See George, Robitzsch, Kiefer, Gross, and Uenlue (2017) <doi:10.18637/jss.v074.i02> or Robitzsch and George (2019, <doi:10.1007/978-3-030-05584-4_26>) for further details on estimation and the package structure. For tutorials on how to use the CDM package see George and Robitzsch (2015, <doi:10.20982/tqmp.11.3.p189>) as well as Ravand and Robitzsch (2015).

Version:	8.3-14
Depends:	R (≥ 3.1), mvtnorm
Imports:	graphics, grDevices, methods, polycor, Rcpp, stats, utils
LinkingTo:	Rcpp, RcppArmadillo
Suggests:	BIFIEsurvey, lattice, MASS, miceadds, ROI, sfsmisc
Enhances:	dina, GDINA, mirt, rrum
Published:	2025-07-13
DOI:	10.32614/CRAN.package.CDM
Author:	Alexander Robitzsch [aut, cre], Thomas Kiefer [aut], Ann Cathrice George [aut], Ali Uenlue [aut]
Maintainer:	Alexander Robitzsch <robitzsch at ipn.uni-kiel.de>
BugReports:	https://github.com/alexanderrobitzsch/CDM/issues?state=open
License:	GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
URL:	https://github.com/alexanderrobitzsch/CDM, https://sites.google.com/view/alexander-robitzsch/software
NeedsCompilation:	yes
Citation:	CDM citation info
Materials:	README, NEWS
In views:	Psychometrics
CRAN checks:	CDM results

Documentation:

Reference manual:

CDM.html , CDM.pdf

Downloads:

Package source:	CDM_8.3-14.tar.gz
Windows binaries:	r-devel: CDM_8.3-14.zip, r-release: CDM_8.3-14.zip, r-oldrel: CDM_8.3-14.zip
macOS binaries:	r-release (arm64): CDM_8.3-14.tgz, r-oldrel (arm64): CDM_8.3-14.tgz, r-release (x86_64): CDM_8.3-14.tgz, r-oldrel (x86_64): CDM_8.3-14.tgz
Old sources:	CDM archive

Reverse dependencies:

Reverse depends:	TAM
Reverse imports:	immer, LAM, mdmb, mnlfa, sirt, STARTS, TDCM
Reverse suggests:	cdcatR, dina, GDINA, miceadds

Linking:

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