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fcaR 1.2.2
Enhancements:
- Added more unit tests.
- Minor changes to the plotting of formal contexts.
- Now the
fc$scale() function admits a new argument bg (default: FALSE) which, if set to TRUE, avoids computing the background knowledge of the scales.
Fixes:
- Changed the package documentation format to comply with the new roxygen2 _PACKAGE sentinel.
fcaR 1.2.1
Enhancements:
- Other logics have been implemented. Now, we can use
fc$use_logic() to select one of the available_logics().
- Improved export to LaTeX.
Bugfixes:
- Fixes required by the new version of Matrix and the new use of HTML Tidy in R 4.2.
- Some rounding errors might induce errors in the computations. These has been fixed.
fcaR 1.2.0
- Fixes required by the new version of Matrix and the new use of HTML Tidy in R 4.2.
fcaR 1.1.1
Enhancements:
- The user can control the number of decimal digits when exporting to LaTeX or when printing formal contexts, concept lattices and implications. Just use fcaR_options(decimal_places = n), where n is the number of desired decimal digits.
New functionality:
- Now the package uses the settings package to manage several options. Currently, the only option is the number of decimal digits to use when printing or exporting to LaTeX.
Bugfixes:
- Fixed exporting to latex with special characters such as $, _, etc.
fcaR 1.1.0
Enhancements:
- Better printing of Sets.
- More optimized ConceptLattice class. Now it inherits from a ConceptSet superclass with generic functions.
New functionality:
- Added function to compute the difference of two Sets.
- Added function to compute the dual of a FormalContext.
- Now one can create a FormalContext from a CSV, CXT or RDS file directly, without needing to “load()” it.
- FormalContexts can now be saved to CXT format, in addition to RDS.
- Added functions to compute the top and the bottom of a concept lattice.
- Added new function sub() to extract a single Concept from a ConceptSet.
- Added functions %holds_in% and %respects%, which check the validity of a set of implications in a formal context, and if a list of attribute sets respect an implication set.
- Added functions %entails% and %~% to check the entailment and equivalence between two implication sets.
- Added new convenience function to map attributes between Sets, so computing intents, extents and closures is more robust.
- Added new functions
%&% and %|% that compute the intersection (logical and) and the union (or operation) on Sets.
- Conceptual scaling, including nominal, ordinal, interordinal, biordinal and interval scales for many-valued formal contexts. Also, computation of background knowledge from the applied scales and of the implications that hold in the formal context. Added new vignette.
Breaking changes:
- The former SparseSet and SparseConcept classes are now named Set and Concept. Thus, to create an object of these types, just use Set$new(…) or Concept$new(…). Analogously, the former function as_SparseSet() is now 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 binary FormalContexts.
fcaR 1.0.6
Bugfixes:
- Detect if R has been built with no long double capabilities and warn the user if she tries to plot FormalContexts and ConceptLattices.
fcaR 1.0.5
Bugfixes:
- Fixes #17. The reduced set of implications after performing closure with reduce == TRUE now stores the matrix I, so it can be re-exported to the arules format.
Enhancements:
- More efficient version of the simplification rule. Now it performs linearly on the number of implications.
- Added a way to extend the equivalence rules by means of the registry package. This has been used to introduce the “Right Simplification” and the “Reorder” rules.
- New vignette to show how to extend equivalence rules in the package.
- More efficient version of the NextClosure algorithm to mine concepts and 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 LaTeX documents.
- Faster computation of concepts and implications.
- Added new function to decompose a concept in its irreducible components.
- Added function to compute the canonical basis from an ImplicationSet.
fcaR 1.0.3
- Changes to some C functions since they could potentially give a segfault.
fcaR 1.0.2
- Made minor changes in the DESCRIPTION.
fcaR 1.0.1
fcaR 1.0.0
- Added a
NEWS.md file to track changes to the package.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.