Description
Provides tools to perform fuzzy formal concept analysis, presented in Wille (1982) <doi:10.1007/978-3-642-01815-2_23> and in Ganter and Obiedkov (2016) <doi:10.1007/978-3-662-49291-8>. It provides functions to load and save a formal context, extract its concept lattice and implications. In addition, one can use the implications to compute semantic closures of fuzzy sets and, thus, build recommendation systems. Matrix factorization is provided by the GreConD+ algorithm (Belohlavek and Trneckova, 2024 <doi:10.1109/TFUZZ.2023.3330760>).
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CRAN Check Status
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check History
OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 9, 2026
ERROR 12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE Jun 8, 2026
tests
Running ‘testthat.R’ [17s/21s]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
> library(testthat)
> library(fcaR)
>
> test_check("fcaR")
An empty set of concepts.
\begin{longtable*}{lll}
1: &$\left(\,\left\{\mathrm{O1
...[truncated]...
:expect_s3_class(p, "ggplot") at test-visualization.R:28:5
2. └─testthat::quasi_label(enquo(object))
3. └─rlang::eval_bare(expr, quo_get_env(quo))
[ FAIL 4 | WARN 0 | SKIP 4 | PASS 621 ]
Error:
! Test failures.
Execution halted
OK 12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 25, 2026
NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 22, 2026
installed package size
installed size is 11.3Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 8.7Mb
installed package size
installed size is 11.6Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 9.0Mb
ERROR 11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE Apr 18, 2026
whether package can be installed
Installation failed. See 'd:/Rcompile/CRANpkg/local/4.6/fcaR.Rcheck/00install.out' for details.
installed package size
installed size is 11.3Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 8.7Mb
installed package size
installed size is 11.6Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 9.0Mb
NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
installed package size
installed size is 11.3Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 8.7Mb
installed package size
installed size is 11.6Mb
sub-directories of 1Mb or more:
doc 1.4Mb
libs 9.0Mb