Changelog

Source: NEWS.md

eatModel 0.10.19

Changes based on available commit messages. The local Git history can be traced back to the initial commit on 2018-10-30.

2025-08-25 to 2026-06-10

New features

• Added partial credit support for TAM, mirt, and ConQuest.
• Added DIF handling for partial credit models in TAM and ConQuest.
• Added partial credit support to plotICC().
• Added getTrafo() to extract IQB transformation rules from a database.
• Added an equivalence table for partial credit models.

Improvements

• Improved WLE handling in multidimensional models by accounting for missing values on subdimensions.
• Updated adaptSkeletonForAnchor() so covariances are not constrained.
• Omit empty categories.
• Allow ConQuest variable names longer than 10 characters.
• Restrict group.var to software = "conquest".

Bug fixes

• Fixed getDevianceConquest().
• Fixed getConquestDesc().
• Fixed runModel() for partial credit models in mirt.
• Fixed checkGenerateRefPop().
• Fixed issues in Thurstone threshold tests.

Documentation and tests

• Added documentation for getTrafo().
• Updated the defineModel help page.
• Added and updated pkgdown documentation.
• Added test_defineModel.R with TAM and ConQuest examples from the defineModel documentation.
• Added tests for Thurstone thresholds and similarity tests for it1.
• Reworked stopifnot() checks into testthat tests.
• Updated tests to ignore rows with missing values in comparisons.
• Added Edna Grewers as a package contributor.

2025-01-13 to 2025-05-13

• Added a message for equat1pl().
• Increased Q3 estimation speed by incorporating the Rfast package.
• Adapted transformToBista() for non-nested person groups.
• Rewrote and clarified multiEquatError().
• Added assertions.
• Removed selected assertions for fixSlopeMat and directories.
• Removed recursive calls.
• Fixed splitting by non-nested person groups.
• Fixed partial credit definitions.
• Fixed scipen handling for R >= 4.5.0.
• Fixed and clarified help pages for defineModel() and multiEquatError().

2024

Package structure and maintenance

• Restructured R files into focused modules for defineModel(), runModel(), getResults(), equat1pl(), transformToBista(), plotICC(), ConQuest helpers, TAM helpers, result extractors, Q3 helpers, and model checks.
• Added cli support.
• Replaced deprecated memory.limit() usage with ps::ps_system_memory().
• Updated the eatTools dependency.
• Removed outdated getConquestVersion(), prepRep(), the date dependency, and obsolete exports.
• Changed encoding in getResults.Rd from ANSI to UTF-8.
• Updated README content, logo, sticker, and R-CMD badge.

Assertions and checks

• Added assertions for verbose, digits, isLetter(), simEquiTable(), getConquestVersion(), checkContextVars(), checkQmatrixConsistency(), checkPersonGroupsConsistency(), splitModels(), checkLinking(), defineModel(), runModel(), anker(), result extractor functions, low-level ConQuest readers, plotDevianceConquest(), multiEquatError(), transformToBista(), and logical arguments.
• Moved Q-matrix and person group consistency checks into shared check functions.
• Reworked checkLinking() diagnostics and removed redundant checks.
• Updated warnings and messages in item consistency checks.
• Added and revised checks for cutScores, model name elements, qMatrix, idVarName, logFile, weights, analysis.name, and irtmodel.

Improvements and bug fixes

• Added customizable model statements and fixed related bugs.
• Fixed DIF identification and ETS DIF classification.
• Fixed getTamEAPs(), get.shw(), equat1pl(), splitModels(), simEquiTable(), getTamWLE(), and item consistency checks.
• Enhanced get.dsc().
• Implemented stringr in get.shw().
• Replaced set.col.type for better performance.
• Updated getResults documentation and the defineModel() help file.
• Tried to resolve R CMD check failures.

2023

• Added compareDefineModelObjects().
• Added a seed argument in getResults() for infit computation.
• Added warnings in equat1pl().
• Applied rounding in simEquiTable().
• Fixed runModel() with show.output.on.console.
• Fixed checkLinking(), equat1pl(), multiEquatError(), tripleEquatError(), and DIF estimation.

2022

New features and improvements

• Added regcoefFromRes().
• Added checkContextVars().
• Added optional long-format output in q3FromRes().
• Added Q3 pairs to transformToBista() output.
• Added diagnostics and alternatives for checkLinking().
• Added error messages to simEquiTable() and checkItemParLists().
• Updated exemplary data and GitHub Actions.
• Replaced cat("Warning...") with warning("...").
• Tidied syntax and removed unnecessary lines and assign(...) calls.

Bug fixes

• Fixed itemFromRes() and TAM DIF analysis handling.
• Fixed transformToBista().
• Fixed linking error calculations.
• Fixed doAufb().
• Fixed tripleEquatError(), equat1p(), and equat1pl().
• Fixed q3FromRes().
• Repaired blockPositions and updated position names in checkLinking().
• Updated checkLinking() documentation.

2021

New features and improvements

• Set up GitHub Actions for continuous integration.
• Added WLE reliability and EAP reliability to the results object.
• Added multiEquatError() for linking three measurements and updated it.
• Added empty testletStr handling and checks for testlet structures.
• Added examples for trend analyses with three measurement points.
• Added output information in defineModel().
• Asked for the ConQuest executable location.
• Prepared for more than two measurement points.
• Modified dependencies and removed readxl from help files.
• Removed console files and remotes from the repository metadata.
• Added and corrected help file notes, examples, and typos.

Bug fixes

• Fixed getTamResults(), getTam2plDiscrim(), checkQmatrixConsistency(), doAufb(), get.shw(), prepareAndCheckEatModelObject(), itemFromRes(), and transformToBista().
• Eliminated notes and warnings.

2020

• Released versions 0.7.9 through 0.7.30.
• Updated eatTools and eatRep dependencies.
• Removed the eatTools remotes section from DESCRIPTION.
• Modified examples.
• Fixed bugs, including a bugfix after version 0.7.30.

2019

Releases and new functionality

• Released versions 0.6.27 through 0.7.9.
• Added checkDesign().
• Added quasiMontecarlo for TAM methods.
• Added 2PL parameter handling from TAM when omitRegr = TRUE.
• Added remotes metadata.
• Updated plotICC() and defaults for plotICC().
• Added hints for TAM compatibility.

Bug fixes and maintenance

• Fixed runModel() for 2PL models.
• Updated messages in anker() and transformToBista().
• Fixed checkDesign(), checkModel(), and the set method for defineModel().
• Fixed model splitting.
• Updated DESCRIPTION and uploaded package files.

2018

• Initial commit on 2018-10-30.
• Released versions 0.6.23 through 0.6.26.
• Updated eatModel.r.