R Observatory: Metrics for TAM version 4.3-25

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

TAM

4.3-25Package record

Test Analysis Modules

3packages dependsuggested by 9

72Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Alexander RobitzschCRAN page ↗GitHub ↗Website ↗

Includes marginal maximum likelihood estimation and joint maximum likelihood estimation for unidimensional and multidimensional item response models. The package functionality covers the Rasch model, 2PL model, 3PL model, generalized partial credit model, multi-faceted Rasch model, nominal item response model, structured latent class model, mixture distribution IRT models, and located latent class models. Latent regression models and plausible value imputation are also supported. For details see Adams, Wilson and Wang, 1997 doi:10.1177/0146621697211001, Adams, Wilson and Wu, 1997 doi:10.3102/10769986022001047, Formann, 1982 doi:10.1002/bimj.4710240209, Formann, 1992 doi:10.1080/01621459.1992.10475229.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("TAM", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("alexanderrobitzsch/TAM")

Development version from alexanderrobitzsch/TAM. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-tam

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-TAM

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-TAM

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 8.4 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-09-08
ERROR12 OK, 1 ERROR2026-09-07
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK12 OK2026-04-25

Show 3 earlier changesHide 3 earlier changes

NOTE12 OK, 2 NOTE2026-04-22
ERROR11 OK, 2 NOTE, 1 ERROR2026-04-18
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 4.3-25

READMEYes · 128 wordsVignettesNoNEWSYes · 33% structuredCitation fileYes · computed when R runs itWebsiteYes

Help pages: 67includes a package overview page
Examples that run: 53%30 run in a plain check · 27 never run
Exported functions with examples: 86%
Documented parameters: 99%
Return-value docs: 95%
Help pages citing references: 96%

How these are measured

Downloads

72K

CRAN downloads in the past year

Rank #1,604 · ~197/day · ~6K/mo

Releases R versions

Daily download trend is not available in this view yet.

5.1K30 days

14.3K90 days

72K1 year

Compare downloads with other packages →

Also on558 r2u6 autocran402 conda_forge183 c2d4u

How downloads are counted

Repository

alexanderrobitzsch/tam ↗Account: alexanderrobitzsch

19Stars

11Forks

10Open issues

0Open PRs

49Releases

117Commits

2Commit identities

item-response-theory

117 commits · Last activity 2025-08-28 · 0% stars, 30d · Default branch at 4.4-2, ahead of CRAN 4.3-25 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 0%
Median days to close, 50 most recently updated closed issues: 3
Median days to close, 50 most recently updated closed PRs: 7

Stars over time

2025-09-06 · 182026-09-16 · 19

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/alexanderrobitzsch/tam on 2026-10-18.

Docs source (1)

GitHub Pages site last deployed 2025-08-28

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

13 external dependencies (excludes base and recommended)

Installing TAM adds 6 packages (5 with compiled code, 5.0 MB of source tarballs). Heaviest: Rcpp 1.8 MB, CDM 1.1 MB, RcppArmadillo 1.0 MB.

Depends (2)

R >= 2.15.1CDM

Imports (5)

graphicsmethodsRcppstatsutils

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (13)

coda GPArotationgrDeviceslatticelavaanMASSmiceadds mvtnorm plyr psych sfsmiscsplinesWrightMap

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

10indirect

Imports 3

Suggested by 9

Depends, Imports or LinkingTo, most downloaded first

sirt immer whomds

Suggests, most downloaded first

miceadds BIFIEsurvey eyeprocess LAM mfrmr RMX LSAmitR decisionfacets scaleAlign

How these are counted

Code & Tests

Datasets

People & History

People (3)

Alexander Robitzsch

Author, Maintainer since 1.0-3.18-1 (2014)

Thomas Kiefer

Author

Margaret Wu

Author

Previously maintained by Thomas Kiefer (1.0-0 to 1.0-3) and Alexander Robitzsch (0.04-43 to 0.99-7).

Releases (63)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
4.3-25Latest
record
2025-08-28 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
4.2-21
record
2024-02-19 · diff ↗
R
R 4.3.0 released · 2023-04-21
4.1-4
record
2022-08-28 · diff ↗
unarchivedReturned to CRAN
2022-05-15
4.0-16
record
2022-05-15 · diff ↗
archivedRemoved from CRAN
2022-05-12
requires archived package 'CDM'
R
R 4.2.0 released · 2022-04-22
3.7-16
record
2021-06-25 · diff ↗ ·
added 2 exports
tam.cb, tam_model_implied_means
R
R 4.1.0 released · 2021-05-18
3.6-45
record
2021-04-22 · diff ↗
3.5-19
record
2020-05-06 · diff ↗
R
R 4.0.0 released · 2020-04-24

Show 63 earlier eventsHide 63 earlier events

3.4-26
record
2020-03-10 · diff ↗ ·
added 1 export
tam_downcode
3.3-10
record
2019-08-23 · diff ↗
3.2-24
record
2019-07-04 · diff ↗ ·
added 1 export
IRT.cv
R
R 3.6.0 released · 2019-04-26
3.1-45
record
2019-03-18 · diff ↗ ·
added 1 export
IRT.RISE
3.0-21
record
2018-12-10 · diff ↗ ·
removed 1 export
weighted_curtosis

added 2 exports
tam_ginv_scaled, weighted_kurtosis
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
3.0.3
record
2014-02-02 · diff ↗
3.0.2
record
2013-09-15 · diff ↗
2.13-15
record
2018-09-30 · diff ↗ ·
removed 1 export
tam.jml.WLE

added 3 exports
tam_jml_wle, tam.mml.wle, tam.np
2.12-18
record
2018-05-25 · diff ↗ ·
added 3 exports
tam_latreg_se_quick, tam_max_abs, tam_max_abs_list
2.11-93
record
2018-05-02 · diff ↗
2.10-24
record
2018-03-29 · diff ↗ ·
added 2 exports
tam.jml.fit, tam.personfit
2.9-35
record
2018-02-26 · diff ↗ ·
added 1 export
tam_mml_se_quick
2.8-21
record
2017-11-16 · diff ↗
2.7-56
record
2017-10-19 · diff ↗ ·
added 9 exports
add.lead, tam_bayesian_bootstrap, tam_cov_wt, tam_cor_wt, tam_csink, tam_ginv, tam_osink, tam_round_data_frame, tam_round_data_frame_print
2.6-2
record
2017-08-13 · diff ↗
2.5-14
record
2017-08-08 · diff ↗ ·
added 2 exports
require_namespace_msg, tam_dmvnorm
2.4-9
record
2017-07-01 · diff ↗ ·
removed 1 export
tam.mml.wle
2.3-18
record
2017-06-25 · diff ↗
2.2-49
record
2017-06-17 · diff ↗ ·
added 12 exports
tam.linking, tam.pv.mcmc, tam_01_pattern, tam_AXsi_compute, tam_AXsi_fit, tam_interval_index, tam_irf_3pl, tam_linking_2studies, tam_NA_pattern, tam_normalize_vector, tam_rowCumsums, tam_remove_missings
2.1-43
record
2017-05-11 · diff ↗ ·
added 8 exports
tam_aggregate, tam_args_CALL_search, tam_assign_list_elements, tam_difference_quotient, tam_matrix2, tam_normalize_matrix_rows, tam_outer, tam_trim_increment
2.0-37
record
2017-04-12 · diff ↗ ·
added 3 exports
tam_packageinfo, tam_print_call, tam_rsessinfo
1.99999-31
record
2017-03-02 · diff ↗
1.99993-0
record
2017-02-06 · diff ↗
1.99992-0
record
2017-01-23 · diff ↗
1.995-0
record
2016-05-31 · diff ↗
1.99-6
record
2016-04-16 · diff ↗
1.17-0
record
2016-03-12 · diff ↗ ·
added 12 exports
DescribeBy, EAPrel, IRTLikelihood.ctt, Scale, weighted_curtosis, weighted_mean, weighted_quantile, weighted_sd, weighted_skewness, weighted_table, weighted_var, WLErel
1.16-0
record
2016-02-01 · diff ↗
1.15-0
record
2015-12-16 · diff ↗
1.14-0
record
2015-10-15 · diff ↗
1.13-0
record
2015-08-29 · diff ↗
1.12-0
record
2015-08-27 · diff ↗
1.11-0
record
2015-08-11 · diff ↗
1.10-0
record
2015-07-25 · diff ↗ ·
added 2 exports
IRT.simulate, IRT.truescore
1.9-0
record
2015-06-30 · diff ↗
1.8-0
record
2015-06-27 · diff ↗ ·
added 1 export
IRT.informationCurves
1.7-1
record
2015-06-05 · diff ↗ ·
added 3 exports
IRT.residuals, msq.itemfitWLE, tam.Q3
1.6-0
record
2015-04-03 · diff ↗ ·
added 1 export
IRT.drawPV
1.5-2
record
2015-02-24 · diff ↗ ·
added 5 exports
tam.modelfit.IRT, tam.modelfit.args, msq.itemfit, IRT.linearCFA, IRT.threshold
1.4-1
record
2015-01-16 · diff ↗ ·
added 3 exports
cfa.extract.itempars, IRTLikelihood.cfa, IRT.WrightMap
1.3
record
2015-01-06 · diff ↗ ·
added 5 exports
tamaan, tamaanify, doparse, tampv2datalist, tam.latreg
1.2
record
2014-11-22 · diff ↗ ·
added 1 export
lavaanify.IRT
1.1
record
2014-10-19 · diff ↗ ·
added 1 export
plotctt
1.0-3.18-1
record
2014-09-08 · diff ↗
1.0-3
record
2014-06-27 · diff ↗ ·
added 3 exports
tam.mml.3pl, designMatrices.mfr2, tam.modelfit
1.0-2.1
record
2014-05-02 · diff ↗
1.0-2
record
2014-04-02 · diff ↗ ·
added 1 export
tam.mml.wle2
1.0-1
record
2014-02-02 · diff ↗
1.0-0
record
2014-01-01 · diff ↗
0.99-7
record
2013-11-02 · diff ↗
0.9-9
record
2013-10-13 · diff ↗
0.8-19
record
2013-10-03 · diff ↗ ·
added 2 exports
plotDevianceTAM, tam.ctt3
0.7-35
record
2013-09-15 · diff ↗ ·
added 1 export
tam.fa
0.6-26
record
2013-08-28 · diff ↗ ·
added 1 export
tam.ctt2
0.5-21
record
2013-07-29 · diff ↗ ·
added 1 export
tam.mml.wle
0.04-43
record
2013-07-01
R
R 3.0.0 released · 2013-04-03

Package metadata

First published: 2013-07-01
Total releases: 63 / 13 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 2.15.1
Bundled data: 277 KB / 32 files
Download size: 668 KB

Appears in task views

Missing Data Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("TAM")

The package provides a citation file that builds its entry when R runs it. Run citation() to see it.

Cite the R Observatory

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

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for TAM version 4.3-25 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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