mlr3fairness

0.4.0

Fairness Auditing and Debiasing for 'mlr3'

2packages depend

35.4Kdownloads / year

92.6%test coverage

13/13checks pass

Overview

About

Maintained by Florian PfistererFirst published 2022-05-124 releasesCRAN page ↗GitHub ↗

Integrates fairness auditing and bias mitigation methods for the 'mlr3' ecosystem. This includes fairness metrics, reporting tools, visualizations and bias mitigation techniques such as "Reweighing" described in 'Kamiran, Calders' (2012) doi:10.1007/s10115-011-0463-8 and "Equalized Odds" described in 'Hardt et al.' (2016) https://papers.nips.cc/paper/2016/file/9d2682367c3935defcb1f9e247a97c0d-Paper.pdf. Integration with 'mlr3' allows for auditing of ML models as well as convenient joint tuning of machine learning algorithms and debiasing methods.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("mlr3fairness", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("mlr-org/mlr3fairness")

Development version from mlr-org/mlr3fairness. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-mlr3fairness

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-mlr3fairness

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-mlr3fairness

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 9.3 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.43

92.6%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-17
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-05-10
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,337 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 46%
References docs: 31%

Downloads

35.4K

CRAN downloads in the past year

Rank #2,459 · ~97/day · ~3K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.4K30 days

9K90 days

35.4K1 year

Compare downloads with other packages →

Also on121 r2u30 autocran

Repository

GitHub ↗ mlr-org/mlr3fairness

15Stars

2Forks

9Open issues

1Open PRs

1Releases

351Commits

8Contributors

machine-learningfairnessmlr3rr-package

License LGPL-3.0 · 351 commits · Last activity 2026-04-24 · 0% stars, 30d

Stars over time

2024-06-26 · 142026-07-07 · 15

Repository practices

Upstream repositoryBeta

7 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/mlr-org/mlr3fairness on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Show all practices

Lint, format, editor (3)

lintrEditorConfigRStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

26 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.4.0

Imports (11)

checkmate data.table ggplot2 mlr3 (>= 0.23.0.9000)mlr3learners mlr3measures mlr3misc mlr3pipelines paradox R6 rlang

LinkingTo (0)

none

Suggests (16)

cccp CVXR pagedown fairml future iml kableExtra knitr linprog lgr mlr3viz patchwork ranger rmarkdownrparttestthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

mlr3summary mlr3verse

Code & Tests

Code Composition

R 3,873 (55%)Rd 2,631 (37%)Vignettes 576 (8%)

Code characteristics

Object systems

S312R614

Cyclomatic complexity: 1.0 median / 5 max
Test cases: 71 / 0.43 per code line

Test coverage

Line coverage

93%

Expression

92.6%

Tests / Examples

92.6% / 71% ex

Functions

42 13 exported

Complexity

1.9 avg / 5 max

Call network

42 nodes / 14 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

42 functions

Function	Cyclo	Coverage
compute_metrics exp	5	0%
fairness_tensor.ResampleResult	1	0%
tabular	2	0%
fairness_prediction_density.PredictionClassif	5	63%
report_fairness exp	3	69%
assert_pta_task	4	80%

People & History

People (3)

Maintainer (1)

Florian Pfisterer

Maintainer, Author

Authors (3)

Florian Pfisterer

Maintainer, Author

Michel Lang

Author

Wei Siyi

Author

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.4.0Latest
2025-06-24 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.3.2
2023-05-05 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.3.1
2022-08-16 · diff ↗
0.3.0
2022-05-12
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-05-12
Total releases: 4 / 4 yrs
License: LGPL-3 OSI
Minimum R: ≥ 3.4.0
Bundled data: 226 KB / 3 files
Download size: 540 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →