NEWS.md

In ItemResponseTrees: IR-Tree Modeling in 'mirt', 'Mplus', or 'TAM'

ItemResponseTrees 0.2.5

• Fixed tests and vignette that failed due to changes in package mirt version 1.32.1.
• augment() now consistently prefixes new columns with .fitted. or .se.fit.. Furthermore, its argument se.fit was renamed to se_fit (as recommended by package modeltests).
• Uncoupled README from the vignette; README is now much shorter.
• R (>= 3.6.0) is now required in alignment with the dependency mirt.

ItemResponseTrees 0.2.4 (2020-04-24)

• Condition handling was refactored (e.g., myTryCatch() was replaced with simsalapar::tryCatch.W.E()).
• sym_diff() was replaced with sets::set_symdiff(), and sort2() was removed.

ItemResponseTrees 0.2.3

• Minor, internal changes in the documentation

ItemResponseTrees 0.2.2

• Modified package Description field for CRAN
• Modified vignette, install.packages was commented out.
• Credit to Jackson for the jackson data and Dontas for sort2() is now given via appropriate attribution rather than usage of \author.

ItemResponseTrees 0.2.1

• Modified package Title field for CRAN

ItemResponseTrees 0.2.0

Breaking changes

• In the model syntax, the section Subtree is deprecated and was merged with section Constraints.
• Long variable names are no longer automatically replaced. They are now accepted for mirt and TAM, but no longer for Mplus.
• logit is now the default link function everywhere.
• mirt is now the default engine in fit().

Improvements

• More complex models using constraints (that were only available for Mplus) are now implemented for mirt and TAM.
• The new function irtree_create_template() helps to create a model string.
• Data set jackson (Big Five questionnaire) was added.
• Many internal changes to increase robustness.
• Controlling features of the engine in fit() is now done via a single control argument (rather than ...), and helper functions control_<engine>() make that painless.
• The documentation was improved.
• The output of tidy() was enhanced (added columns parameter and component), and the argument par_type is now required for mirt.

ItemResponseTrees 0.1.1

• Add wrapper functions for the TAM package
• Add the multidimensional partial credit model (not an IR-tree model); works only in TAM

ItemResponseTrees 0.1

• First stable version

ItemResponseTrees documentation built on July 2, 2020, 2:25 a.m.