Package: ACTCD
Type: Package
Title: Asymptotic Classification Theory for Cognitive Diagnosis
Version: 1.4-0
Date: 2026-02-24
Authors@R: c(person(given = "Chia-Yi",
                      family = "Chiu",
                      role = "aut",
                      comment = "Teachers College, Columbia University"),
               person(given = "Wenchao",
                      family = "Ma",
                      role = c("aut", "cre"),
                      email = "wma@umn.edu",
                      comment = "University of Minnesota"))
Depends: R (>= 3.1.0)
Imports: GDINA, stats, utils, R.methodsS3
LazyData: no
Description: Cluster analysis for cognitive diagnosis based on the Asymptotic Classification Theory (Chiu, Douglas & Li, 2009; <doi:10.1007/s11336-009-9125-0>). Given the sample statistic of sum-scores, cluster analysis techniques can be used to classify examinees into latent classes based on their attribute patterns. In addition to the algorithms used to classify data, three labeling approaches are proposed to label clusters so that examinees' attribute profiles can be obtained.
License: GPL (>= 2)
NeedsCompilation: yes
Packaged: 2026-02-25 22:08:34 UTC; wma
Author: Chia-Yi Chiu [aut] (Teachers College, Columbia University),
  Wenchao Ma [aut, cre] (University of Minnesota)
Maintainer: Wenchao Ma <wma@umn.edu>
Repository: CRAN
Date/Publication: 2026-02-26 08:40:19 UTC
Built: R 4.6.0; x86_64-apple-darwin20; 2026-04-25 21:10:20 UTC; unix
Archs: ACTCD.so.dSYM
