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Generalized Graded Unfolding Model

1packages depend
3.7Kdownloads / year
0.0%test coverage
0/13flavors OK

Overview

About

An implementation of the generalized graded unfolding model (GGUM) in R, see Roberts, Donoghue, and Laughlin (2000) doi:10.1177/01466216000241001). It allows to simulate data sets based on the GGUM. It fits the GGUM and the GUM, and it retrieves item and person parameter estimates. Several plotting functions are available (item and test information functions; item and test characteristic curves; item category response curves). Additionally, there are some functions that facilitate the communication between R and 'GGUM2004'. Finally, a model-fit checking utility, MODFIT(), is also available.

Install

Health

CRAN checks
13NOTE
Check messages
NOTERd filesr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64, r-oldrel-macos-arm64, r-oldrel-macos-x86_64, r-oldrel-windows-x86_64, r-patched-linux-x86_64, r-release-linux-x86_64, r-release-macos-arm64, r-release-macos-x86_64, r-release-windows-x86_64
checkRd: (-1) MODFIT.Rd:33: Lost braces; missing escapes or markup?
    33 |   {chisq_i = sum( (O_iz - E_iz)^2 / E_iz; z = 0, ..., C ), }
       |   ^
checkRd: (-1) probs.GGUM.Rd:27: Lost braces; missing escapes or markup?
    27 |   GUM-based probabilities just constrain alpha to a unit vector of length {I}
       |                                                                           ^

CRAN check page ↗

Slowest check: 2.9 min · r-oldrel-macos-x86_64
Status changes
  • NOTE13 NOTENow
  • NOTE14 NOTE2026-04-06
  • ERROR13 NOTE, 1 ERROR2026-04-04
  • NOTE14 NOTE2026-03-10
Advisories

none known

Documentation

In release 0.5
READMEYes · 126 wordsVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION
Help pages
17includes a package overview page
Examples that run
47%8 run in a plain check · 9 never run
Exported functions with examples
100%
Documented parameters
100%
Return-value docs
94%
Help pages citing references
53% with a bibliography file

Downloads

3.7K
CRAN downloads in the past year
Rank #9,473 · ~10/day · ~309/mo
Daily download trend is not available in this view yet.
45630 days
1K90 days
3.7K1 year
Compare downloads with other packages →
Also on73 r2u1 autocran

Repository

6Stars
4Forks
3Open issues
0Open PRs
0Releases
67Commits
13Commit identities
67 commits · Last activity 2023-09-08
Responsiveness
How these are sampled
PRs merged (all time)
80%
Median days to close, 50 most recently updated closed issues
54
Median days to close, 50 most recently updated closed PRs
6

Stars over time

2024-07-08 · 52026-07-07 · 6
PracticesBeta

Checks run against github.com/jorgetendeiro/ggum on 2026-10-21.

No development-tooling practices detected in the upstream repository.

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies
6 external dependencies (excludes base and recommended)

Installing GGUM adds 28 packages (10 with compiled code, 32 MB of source tarballs). Heaviest: xlsxjars 9.8 MB, ggplot2 6.0 MB, viridis 2.9 MB.

Depends (0)
none
Imports (7)
LinkingTo (0)
none
Suggests (1)
Enhances (0)
none
Reverse dependencies
1direct
0indirect
Imports 1
Depends, Imports or LinkingTo, most downloaded first

People & History

People (2)
Author, Maintainer since 0.3.1 (2018)
Releases (8)

Pick two releases to compare their code metrics.

  • R
    R 4.6.0 released · 2026-04-24
  • R
    R 4.5.0 released · 2025-04-11
  • R
    R 4.4.0 released · 2024-04-24
  • 0.5Latest
    record
    2023-09-08 · current release · diff ↗
  • R
    R 4.3.0 released · 2023-04-21
  • R
    R 4.2.0 released · 2022-04-22
  • 0.4-3
    record
    2021-10-07 · diff ↗
  • R
    R 4.1.0 released · 2021-05-18
  • 0.4-2
    record
    2021-02-21 · diff ↗
  • 0.4-1
    record
    2020-05-18 · diff ↗
  • R
    R 4.0.0 released · 2020-04-24
  • 0.4
    record
    2020-01-21 · diff ↗
  • R
    R 3.6.0 released · 2019-04-26
  • 0.3.3
    record
    2018-10-04 · diff ↗
  • 0.3.2
    record
    2018-07-04 · diff ↗
  • R
    R 3.5.0 released · 2018-04-23
Show 2 earlier eventsHide 2 earlier events
  • 0.3.1
    record
    2018-01-26
  • R
    R 3.4.0 released · 2017-04-21

Package metadata

First published
2018-01-26
Total releases
8 / 8 yrs
License
GPL (>= 2) OSI
Download size
81 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("GGUM")
Tendeiro, J. N., & Castro-Alvarez, S. (2023). GGUM: Generalized Graded Unfolding Model (Version 0.5) [Computer software]. https://doi.org/10.32614/CRAN.package.GGUM

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

APA

Balamuta, J. J. (2026). R Observatory: Metrics for GGUM version 0.5 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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