fix small bug in closure.c (error() wrongly called)
add missing methods in NAMESPACE
Fix formals mismatch in .as.list.gset()
Add ORCID IDs
Vectorize all [cg]set predicates and check for correct arguments
add as.vector() methods for [cg]sets
rename element class to gset_element to avoid name clash with ggplot
Some small fixes in interval code
[gc]set_complement(a, b) now use the union of the universes
of a and b, and the max. bound of a and b if no global defaults are specified.
no user-level changes
Do not export as.list.function() any more
add lengths method
the extract operator ([[) now returns NULL if
the requested element can not be found instead of throwing a cryptical
error message
some small internal optimizations
no user-level changes
add import statements for functions in recommended packages to ‘NAMESPACE’
internal fix because nchar(NA) now returns NA
Rd improvements
small fix in LABELS() (when called with NULL)
Author/Maintainer info removed from DESCRIPTION
The length() methods for [cg]sets are no
longer aliases for gset_cardinality(),
but for set_cardinality() (i.e., give the number of
elements in the [cg]set).
This change has been made since length()
methods are expected to yield integer values only.
small bug fix in fuzzy_two_normals()
Package news converted to Rd format.
small fix in interval code
small fix in all.equal() method
bug fix in all.equal() method
overloaded set operators will now work for operands of mixed set types
as.list.interval() now returns a list of intervals instead of
just applying unclass()
small bug fixes
small bug fixes
interval class for possibly infinite numeric intervals added.
fuzzy rules now accept the use of brackets in the expressions.
Missing memberships are now supported.
JSS article as vignette added.
fuzzy_pi4() generator added.
[gc]set_memberships extended to allow for filter elements and to work with tuples.
L1 and L2 dissimilarities for fuzzy multisets added.
fuzzy_pi() generator added
(fuzzy) multisets are now n-bounded (where n is
the maximal multiplicity).
This now allows consistent complement-building.
nu-cuts added (filters elements according to multiplicity).
fuzzy inference framework added
converters for matrices added
bug fixes in ordering function and as.character.cset()
fuzzy function generators added
extended plotting for fuzzy sets added
several functions for memberships transformation added
performance of matching operator improved
optional universes for gsets added
support for customizable sets (cset) added
set_options() added
A lot of bug fixes
closure and reduction of sets added
Initial release, implementing data structures and methods for ordinary sets, generalized sets (fuzzy sets, multisets, fuzzy multisets) as well as support for fuzzy logic.