Movatterモバイル変換

fcaR 1.2.2

Enhancements:

• Added more unit tests.
• Minor changes to the plotting of formal contexts.
• Now thefc$scale() function admits a new argumentbg (default: FALSE) which, if set to TRUE, avoids computingthe background knowledge of the scales.

Fixes:

• Changed the package documentation format to comply with the newroxygen2 _PACKAGE sentinel.

fcaR 1.2.1

Enhancements:

• Other logics have been implemented. Now, we can usefc$use_logic() to select one of theavailable_logics().
• Improved export to LaTeX.

Bugfixes:

• Fixes required by the new version of Matrix and the new use of HTMLTidy in R 4.2.
• Some rounding errors might induce errors in the computations. Thesehas been fixed.

fcaR 1.2.0

• Fixes required by the new version of Matrix and the new use of HTMLTidy in R 4.2.

fcaR 1.1.1

Enhancements:

• The user can control the number of decimal digits when exporting toLaTeX or when printing formal contexts, concept lattices andimplications. Just use fcaR_options(decimal_places = n), where n is thenumber of desired decimal digits.

New functionality:

• Now the package uses thesettings package to manage severaloptions. Currently, the only option is the number of decimal digits touse when printing or exporting to LaTeX.

Bugfixes:

• Fixed exporting to latex with special characters such as $, _,etc.

fcaR 1.1.0

Enhancements:

• Better printing of Sets.
• More optimized ConceptLattice class. Now it inherits from aConceptSet superclass with generic functions.

New functionality:

• Added function to compute thedifference of twoSets.
• Added function to compute thedual of aFormalContext.
• Now one can create a FormalContext from a CSV, CXT or RDS filedirectly, without needing to “load()” it.
• FormalContexts can now be saved to CXT format, in addition toRDS.
• Added functions to compute the top and the bottom of a conceptlattice.
• Added new function sub() to extract a single Concept from aConceptSet.
• Added functions %holds_in% and %respects%, which check thevalidity of a set of implications in a formal context,and if a list of attribute sets respect an implication set.
• Added functions %entails% and %~% to check theentailment andequivalence between twoimplication sets.
• Added new convenience function to map attributes between Sets, socomputing intents, extents and closures is more robust.
• Added new functions%&% and%|% thatcompute the intersection (logicaland) and the union(or operation) on Sets.
• Conceptual scaling, including nominal, ordinal,interordinal, biordinal and interval scales for many-valued formalcontexts. Also, computation of background knowledge from the appliedscales and of the implications that hold in the formal context. Addednew vignette.

Breaking changes:

• The former SparseSet and SparseConcept classes are now named Set andConcept. Thus, to create an object of these types, just use Set$new(…)or Concept$new(…). Analogously, the former function as_SparseSet() isnow as_Set().

Bugfixes:

• Minor bugfixes in several functions.

fcaR 1.0.7

Bugfixes:

• Minor bugfixes in several functions.
• Fixed C source that could generate some problems.

Enhancements:

• Reduced number of dependencies.
• Better printing of FormalContexts, specially for binaryFormalContexts.

fcaR 1.0.6

Bugfixes:

• Detect if R has been built with no long double capabilities and warnthe user if she tries to plot FormalContexts and ConceptLattices.

fcaR 1.0.5

Bugfixes:

• Fixes #17. The reduced set of implications after performing closurewith reduce == TRUE now stores the matrix I, so it can be re-exported tothe arules format.

Enhancements:

• More efficient version of the simplification rule. Now it performslinearly on the number of implications.
• Added a way to extend the equivalence rules by means of the registrypackage. This has been used to introduce the “Right Simplification” andthe “Reorder” rules.
• New vignette to show how to extend equivalence rules in thepackage.
• More efficient version of the NextClosure algorithm to mine conceptsand implications.

fcaR 1.0.4

Bugfixes:

• Fixes #15. A problem with version 1.6-6 of arules.
• Bugfix when using the trivial context (S, S, !=)
• Several bugfixes in LaTeX output.

Enhancements:

• Added export of plots to TiKZ to be included in LaTeXdocuments.
• Faster computation of concepts and implications.
• Added new function to decompose a concept in its irreduciblecomponents.
• Added function to compute the canonical basis from anImplicationSet.

fcaR 1.0.3

• Changes to some C functions since they could potentially give asegfault.

fcaR 1.0.2

• Made minor changes in the DESCRIPTION.

fcaR 1.0.1

• Made changes suggested by CRAN:

  • Added examples in the documentation.
  • Changed cat() to message() in functions not related toprinting.
  • Added proper contributors.

• Updated vignettes

fcaR 1.0.0

• Added aNEWS.md file to track changes to thepackage.