- released: 2026-07-03
- added upperBound() algebra for missing values
- added infer() function for Mamdani and implicative inference
- fixed bugs
- released: 2025-12-16
- removed C++11 requirement as R already supports higher C++ standards
- updated autoconfig files
- polished documentation
- released: 2025-06-27
- implemented str.fsets(), as_tibble.fsets()
- removed dependency on the zoo package
- added lowerBound() algebra for missing values
- released: 2024-10-22
- implemented the experimental Center of Gravity defuzzification method (defuzz())
- added "a few" and "several" fuzzy quantifiers to the quantifier() function
- released: 2022-09-08
- added equidist(), equifreq()
- added function to compute fuzzy-transform (ft()) and its inverse (ftinv())
- parallel t-norms and t-conorms rewritten in C++
- released: 2021-08-23
- added vignette
- released: 2020-11-04
- fixed the minimum required version of R to 3.6
- released: 2020-10-15
- the result of algebra() is now an S3 class, implemented print.algebra()
- added involutive negation to algebra()$ni
- added nelson(), lowerEst() handlers of NA for algebra()
- added print() method for linguistic contexts
- added negated=FALSE argument to the lingexpr() function
- implemented bi-residuum of the dragonfly algebra
- implemented order operation of the dragonfly and lowerEst algebras
- added sugeno()
- added fuzzy quantifiers
- deprecated some arguments of the compose() function
- removed deprecated functions: lcut3(), lcut5()
- released: 2020-05-19
- added support for percentual quantifiers in compose()
- documentation spell-check