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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