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1.5-1

IRT Separate Calibration Linking Methods

2packages depend
45.3Kdownloads / year
test coverage
9/13checks pass

Overview

About
Maintained by Jonathan P. WeeksFirst published 2007-09-0429 releasesCRAN page ↗

Item response theory based methods are used to compute linking constants and conduct chain linking of unidimensional or multidimensional tests for multiple groups under a common item design. The unidimensional methods include the Mean/Mean, Mean/Sigma, Haebara, and Stocking-Lord methods for dichotomous (1PL, 2PL and 3PL) and/or polytomous (graded response, partial credit/generalized partial credit, nominal, and multiple-choice model) items. The multidimensional methods include the least squares method and extensions of the Haebara and Stocking-Lord method using single or multiple dilation parameters for multidimensional extensions of all the unidimensional dichotomous and polytomous item response models. The package also includes functions for importing item and/or ability parameters from common IRT software, conducting IRT true score and observed score equating, and plotting item response curves/surfaces, vector plots, information plots, and comparison plots for examining parameter drift.

Install

Health

CRAN checks
4NOTE9OK
Failing flavors
  • NOTE r-devel-linux-x86_64-debian-clang
  • NOTE r-devel-linux-x86_64-debian-gcc
  • NOTE r-oldrel-macos-arm64
  • NOTE r-oldrel-macos-x86_64
Slowest check: 3.4 min · r-devel-windows-x86_64
Code health
None
Tests · ratio 0.00
not tracked
Coverage
100%
Documentation · exports
4
Dependencies · direct
Check history
  • NOTE2026-06-27
    9 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • WARNING2026-06-14
    8 OK · 4 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
  • NOTE2026-03-10
    6 OK · 8 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation
READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo
Examples that run
100%
Documented parameters
100%
Return-value docs
100%
References docs
48%

Downloads

45.3K
CRAN downloads in the past year
Rank #2,294 · ~124/day · ~3.8K/mo
Daily download trend is not available in this view yet.
2.5K30 days
8.6K90 days
45.3K1 year
Compare downloads with other packages →
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Dependencies

Declared dependencies
1 external dependency (excludes base and recommended)
Depends (3)
R >= 3.3.3methodslattice
Imports (2)
LinkingTo (0)
none
Suggests (0)
none
Enhances (0)
none
Reverse dependencies
2direct
0indirect

Code & Tests

People & History

People (0)

Author records are not tracked yet for this package.

Listed in earlier versions (2)
no longer listed · 0.0-0 to 0.1-1
no longer listed · 1.0.0 to 1.5-1
Package Timeline

29 releases. Pick two to compare their code metrics. R releases are shown for context.

  • 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
  • R
    R 4.3.0 released · 2023-04-21
  • R
    R 4.2.0 released · 2022-04-22
  • R
    R 4.1.0 released · 2021-05-18
  • R
    R 4.0.0 released · 2020-04-24
  • R
    R 3.6.0 released · 2019-04-26
  • R
    R 3.5.0 released · 2018-04-23
  • 1.5-1Latest
    2017-04-26 · current release · diff ↗
  • R
    R 3.4.0 released · 2017-04-21
  • 1.5-0
    2017-04-07 · diff ↗
  • unarchivedReturned to CRAN
    2017-04-07
  • R
    R 3.3.0 released · 2016-05-03
  • R
    R 3.2.0 released · 2015-04-16
  • archivedRemoved from CRAN
    2014-09-20
    vignette locations were never updated for R 3.1.0
Show 40 earlier events
  • R
    R 3.1.0 released · 2014-04-10
  • R
    R 3.0.0 released · 2013-04-03
  • R
    R 2.15.0 released · 2012-03-30
  • R
    R 2.14.0 released · 2011-10-31
  • 1.3-1
    2011-07-25 · diff ↗
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    R 2.13.0 released · 2011-04-13
  • 1.3-0
    2011-02-12 · diff ↗
  • 1.2-7
    2010-10-19 · diff ↗
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    R 2.12.0 released · 2010-10-15
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    2010-07-27 · diff ↗
  • R
    R 2.11.0 released · 2010-04-22
  • 1.2-3
    2010-04-19 · diff ↗
  • R
    R 2.10.0 released · 2009-10-26
  • 1.2-2
    2009-10-23 · diff ↗
  • 1.2-1
    2009-09-29 · diff ↗
  • 1.2-0
    2009-08-19 · diff ↗
  • 1.1-6
    2009-08-07 · diff ↗
  • 1.1-5
    2009-07-26 · diff ↗
  • 1.1-4
    2009-06-19 · diff ↗
  • 1.1-3
    2009-06-14 · diff ↗
  • 1.1-2
    2009-06-02 · diff ↗
  • 1.1-1
    2009-05-28 · diff ↗
  • 1.1-0
    2009-05-15 · diff ↗
  • 1.0.0
    2009-04-19 · diff ↗
  • R
    R 2.9.0 released · 2009-04-17
  • 0.1-1
    2009-01-26 · diff ↗
  • R
    R 2.8.0 released · 2008-10-20
  • 0.1-0
    2008-09-28 · diff ↗
  • 0.0-6
    2008-09-10 · diff ↗
  • 0.0-5
    2008-09-08 · diff ↗
  • R
    R 2.7.0 released · 2008-04-22
  • 0.0-4
    2007-12-05 · diff ↗
  • 0.0-3
    2007-12-02 · diff ↗
  • R
    R 2.6.0 released · 2007-10-03
  • 0.0-2
    2007-09-21 · diff ↗
  • 0.0-1
    2007-09-13 · diff ↗
  • 0.0-0
    2007-09-04
  • R
    R 2.5.0 released · 2007-04-24

Package metadata

First published
2007-09-04
Total releases
29 / 19 yrs
License
GPL (>= 2) OSI
Minimum R
≥ 3.3.3
Bundled data
32 KB / 1 file
Download size
631 KB
Installed size
not tracked yet
With dependencies
not tracked yet

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