R Observatory: Metrics for mlr3learners version 0.16.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mlr3learners

0.16.0Package record

Recommended Learners for 'mlr3'

14packages dependsuggested by 29

244.6Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Marc BeckerCRAN page ↗GitHub ↗Website ↗Issues ↗

Recommended Learners for 'mlr3'. Extends 'mlr3' with interfaces to essential machine learning packages on CRAN. This includes, but is not limited to: (penalized) linear and logistic regression, linear and quadratic discriminant analysis, k-nearest neighbors, naive Bayes, support vector machines, and gradient boosting.

Changes in 0.16.0

feat: classif.xgboost and regr.xgboost now implement $best_valid_scores.

From NEWS.md in the release

Install

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

install.packages("mlr3learners", 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/mlr3learners")

Development version from mlr-org/mlr3learners. 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-mlr3learners

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-mlr3learners

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-mlr3learners

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 5.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-02
ERROR10 OK, 3 ERROR2026-07-25
OK13 OK2026-06-14
ERROR11 OK, 2 ERROR2026-05-05

Show 1 earlier changeHide 1 earlier change

OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.16.0

READMEYes · 272 wordsVignettesNoNEWSYes · 100% structured · mentions 0.16.0Citation fileNoWebsiteYes · pkgdown

Help pages: 22includes a package overview page
Examples that run: 90%19 run in a plain check (19 of them under a condition) · 2 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: not tracked
Return-value docs: 0%
Help pages citing references: 77%

How these are measured

Downloads

244.6K

CRAN downloads in the past year

Rank #850 · ~670/day · ~20.4K/mo

Releases R versions

Daily download trend is not available in this view yet.

12.1K30 days

52.2K90 days

244.6K1 year

Compare downloads with other packages →

Also on30.6K r2u10 autocran7K conda_forge103 c2d4u

How downloads are counted

Repository

mlr-org/mlr3learners ↗Organization: mlr-org

98Stars

22Forks

8Open issues

4Open PRs

29Releases

882Commits

27Commit identities

mlr3machine-learningregressionclassificationlearnersrr-package

License file reads as LGPL-3.0 · 882 commits · Last activity 2026-09-23 · 0% stars, 30d · Default branch at 0.16.0.9000, ahead of CRAN 0.16.0 (checked 2026-10-11) · Discussions: 1 post

Responsiveness

How these are sampled

PRs merged (all time): 90%
Median days to close, 50 most recently updated closed issues: 42
Median days to close, 50 most recently updated closed PRs: 1

Stars over time

2025-09-04 · 952026-08-23 · 98

How these are measured

PracticesBeta

16 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/mlr-org/mlr3learners on 2026-10-11.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, and on R-devel

Governance and community (4)

Contributing guide (inherited from mlr-org)Issue templates

Funding links: GitHub Sponsors

The repository owner accepts GitHub Sponsors

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-09-23 · The repository has a site deploy workflow

pkgdown site last built 2026-09-08

Automation and maintenance (1)

Dependabot

Show all practicesHide 2 practices

Lint, format, editor (5)

lintrAirEditorConfigVS CodeRStudio project

Git structural (1)

blame-ignore revs

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-03-04
Seen in the repository: .claude, CLAUDE.md
Named in .Rbuildignore: .claude, CLAUDE.md
Named in .gitignore: .claude, CLAUDE.md
Pull request it wrote: opened by a project member
Commits: at least 9 crediting it in the message
Cursorfirst seen 2026-03-04
Named in .Rbuildignore: .cursor
Gemini CLIfirst seen 2026-03-18
Config: a file or ignore line, not recorded which
Codexfirst seen 2026-09-23
Seen in the repository: .codex
Named in .Rbuildignore: .codex

Shared conventions any agent may read, so they name no particular tool.

Seen in the repository: AGENTS.md

Review tools

Copilot code review
Commits: at least 1 accepting its review suggestions

Models named in its commits

Claude Opus 4.62 commits · Mar to May 2026
Claude Opus 4.82 commits · Jun to Jul 2026
Claude Opus 52 commits · Sep 2026
Claude Fable 51 commit · Jun 2026
Claude Opus 4.71 commit · Apr 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

20 external dependencies (excludes base and recommended)

Installing mlr3learners adds 24 packages (11 with compiled code, 16 MB of source tarballs). Heaviest: data.table 5.7 MB, palmerpenguins 2.9 MB, mlbench 967 KB.

Depends (2)

R >= 3.4.0mlr3

Imports (6)

checkmate data.tablemethodsmlr3misc paradox R6

LinkingTo (0)

none

Suggests (16)

DiceKriging e1071 future glmnet kknn knitr lgrMASSmirainnetpracma ranger rgenoud rmarkdown testthat (>= 3.0.0)xgboost

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

14direct

6indirect

Depends 2 · Imports 12

Suggested by 29

Show all 43 packagesHide all 43 packages

Depends, Imports or LinkingTo, most downloaded first

mlr3verse DoubleML mlr3fairness tramnet interflex GenericML sense mlr3superlearner mlr3shiny mlr3automl xtdml FoRecoML xtifedml spFSR

Suggests, most downloaded first

How these are counted

Code & Tests

People & History

People (8)

Marc Becker

Maintainer since 0.7.0 (2024), Author · added in 0.7.0

Author

Author

Author

Author · added in 0.1.3

John Zobolas

Author · added in 0.10.0

Toby Hocking

Contributor · added in 0.15.0

Alexander Winterstetter

Contributor · added in 0.15.0

Previously maintained by Michel Lang (0.1.1 to 0.6.0).

Releases (35)

Pick two releases to compare their code metrics.

0.16.0Latest
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2026-09-08 · current release · diff ↗
0.15.1
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2026-07-25 · diff ↗
0.15.0
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2026-06-09 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.14.0
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2025-12-13 · diff ↗
0.13.0
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2025-10-02 · diff ↗
0.12.0
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2025-05-23 · diff ↗ ·
added 2 exports
LearnerClassifKKNN, LearnerRegrKKNN
0.11.0
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2025-05-17 · diff ↗ ·
removed 2 exports
LearnerClassifKKNN, LearnerRegrKKNN
R
R 4.5.0 released · 2025-04-11
0.10.0
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2025-03-19 · diff ↗
0.9.0
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2024-11-23 · diff ↗
0.8.0
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2024-10-25 · diff ↗
0.7.0
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2024-06-28 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.6.0
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2024-03-13 · diff ↗
0.5.8
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2023-12-21 · diff ↗

Show 27 earlier eventsHide 27 earlier events

0.5.7
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2023-11-21 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.5.6
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2023-01-06 · diff ↗
0.5.5
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2022-11-07 · diff ↗
0.5.4
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2022-08-15 · diff ↗ ·
added 1 export
LearnerRegrNnet
0.5.3
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2022-05-25 · diff ↗ ·
removed 4 exports
LearnerSurvCVGlmnet, LearnerSurvGlmnet, LearnerSurvRanger, LearnerSurvXgboost
R
R 4.2.0 released · 2022-04-22
0.5.2
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2022-01-23 · diff ↗
0.5.1
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2021-11-19 · diff ↗
0.5.0
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2021-08-17 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.4.5
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2021-03-18 · diff ↗
0.4.4
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2021-03-15 · diff ↗
0.4.3
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2020-12-08 · diff ↗ ·
added 1 export
LearnerClassifNnet
0.4.2
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2020-11-11 · diff ↗
0.4.1
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2020-10-07 · diff ↗
0.4.0
record
2020-09-25 · diff ↗
0.3.0
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2020-08-29 · diff ↗ ·
added 4 exports
LearnerSurvCVGlmnet, LearnerSurvGlmnet, LearnerSurvRanger, LearnerSurvXgboost
R
R 4.0.0 released · 2020-04-24
0.2.0
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2020-04-22 · diff ↗ ·
added 3 exports
LearnerClassifCVGlmnet, LearnerClassifMultinom, LearnerRegrCVGlmnet
0.1.6
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2020-02-10 · diff ↗
0.1.5
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2019-11-25 · diff ↗
0.1.4
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2019-10-29 · diff ↗
0.1.3
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2019-09-17 · diff ↗
0.1.2
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2019-08-26 · diff ↗
0.1.1
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2019-08-05
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-08-05
Total releases: 35 / 7 yrs
License: LGPL-3 OSI
Minimum R: ≥ 3.4.0
Download size: 80 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mlr3learners")

Format

Becker, M., Au, Q., Coors, S., Hocking, T., Lang, M., Schratz, P., Winterstetter, A., & Zobolas, J. (2026). mlr3learners: Recommended Learners for 'mlr3' (Version 0.16.0) [Computer software]. https://doi.org/10.32614/CRAN.package.mlr3learners

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for mlr3learners version 0.16.0 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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