Version 4.0.0 of the cna R package released on CRAN

Mathias Ambühl and Michael Baumgartner released version 4.0.0 of the cna R package on CRAN. Many new measures for sufficiency and necessity evaluation are now available for CNA model building.

On April 4, 2025, version 4.0.0 of the cna R package was released on CRAN. As always, it can be downloaded here:

https://CRAN.R-project.org/package=cna

Here are the changes in more detail:

Changes in version 4.0.0

• cna() accepts alternative definitions of consistency and coverage. Users can change their selection of definitions and specify their choice in the new argument measures.
• The vignette has been thoroughly revised to introduce these new definitions/measures.
• Correspondingly, con/cov measures can be selected in condition(), condTbl() and other functions.
• New function detailMeasures() is available at the user level (previously present but not visible).
• New functions showMeasures(), showConCovMeasures() and showDetailMeasures() list available summary measures for configuration tables.
• The implementation logic of secondary (fine-tuning) parameters in cna() has been revised. In particular, parameters that are not relevant for the ordinary user have been outsourced to a new function cnaControl().
• The building of complex solution formulas (csf) has been changed such that csf that are submodels of other csf are no longer returned by the function csf().
• New function fs2cs() is available at the user level (previously present but not visible).
• Argument inus.only in cna()/cnaControl() has new default value TRUE.
• The choice of columns printed by default in msc, asf and csf tables changed.
• Functions and arguments that had been deprecated since V3.0 have now been removed.
• More minor changes - not fully listed here.

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