R Observatory: Metrics for mlr3oml version 0.12.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mlr3oml

0.12.0Package record

Connector Between 'mlr3' and 'OpenML'

0packages dependsuggested by 2

31.5Kdownloads / year

78.2%test coverage

13/13flavors OK

Overview

About

Maintained by Sebastian FischerCRAN page ↗GitHub ↗Website ↗Issues ↗

Provides an interface to 'OpenML.org' to list and download machine learning data, tasks and experiments. The 'OpenML' objects can be automatically converted to 'mlr3' objects. For a more sophisticated interface with more upload options, see the 'OpenML' package.

Changes in 0.12.0

Move from qs to qs2 package for caching.
Add uploader argument to list_oml_data().

From NEWS.md in the release

Install

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

install.packages("mlr3oml", 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/mlr3oml")

Development version from mlr-org/mlr3oml. 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-mlr3oml

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-mlr3oml

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-mlr3oml

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: 2.7 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-10-25
ERROR12 OK, 1 ERROR2026-10-24
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.12.0

READMEYes · 761 wordsVignettesNoNEWSYes · 100% structured · mentions 0.12.0Citation fileNoWebsiteYes · pkgdown

The repository also keeps web-only articles.

Help pages: 19includes a package overview page
Examples that run: 0%6 hold no code
Exported functions with examples: 35%
Documented parameters: 98%
Return-value docs: 41%
Help pages citing references: 32%

How these are measured

Downloads

31.5K

CRAN downloads in the past year

Rank #2,724 · ~86/day · ~2.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

2K30 days

5.6K90 days

31.5K1 year

Compare downloads with other packages →

Also on394 r2u3 autocran

How downloads are counted

Repository

mlr-org/mlr3oml ↗Organization: mlr-org

9Stars

6Forks

12Open issues

3Open PRs

17Releases

241Commits

8Commit identities

machine-learningdata-scienceopenmldatadatasetsmlr3rr-package

License file reads as LGPL-3.0 · 241 commits · Last activity 2026-01-28 · 0% stars, 30d · Default branch at 0.12.0.9000, ahead of CRAN 0.12.0 (checked 2026-10-25)

Responsiveness

How these are sampled

PRs merged (all time): 91%
Median days to close, 50 most recently updated closed issues: 58
Median days to close, 50 most recently updated closed PRs: 2

Stars over time

2025-07-25 · 82026-07-07 · 9

How these are measured

PracticesBeta

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

Checks run against github.com/mlr-org/mlr3oml on 2026-10-25.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Governance and community (3)

Contributing guide (inherited from mlr-org)

Funding links: GitHub Sponsors

The repository owner accepts GitHub Sponsors

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-01-28 · The repository has a site deploy workflow

pkgdown site last built 2026-01-28

CRAN release process (1)

cran-comments.md

Show all practicesHide 2 practices

Automation and maintenance (1)

pre-commit

Lint, format, editor (3)

lintrEditorConfigRStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

22 external dependencies (excludes base and recommended)

Installing mlr3oml adds 30 packages (16 with compiled code, 29 MB of source tarballs). Heaviest: stringi 11 MB, data.table 5.7 MB, palmerpenguins 2.9 MB.

Depends (1)

R >= 3.1.0

Imports (15)

backports bit64 checkmate curl data.table jsonlite lgrmethodsmlr3 mlr3misc paradox R6 stringi uuid withr

LinkingTo (0)

none

Suggests (8)

DBI duckdb mlr3db qs2 RWeka testthat xml2 httr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 2

Suggests, most downloaded first

mlr3verse mcboost

How these are counted

Code & Tests

People & History

People (2)

Sebastian Fischer

Maintainer since 0.6.0 (2022), Author · added in 0.6.0

Michel Lang

Author

Previously maintained by Michel Lang (0.1.0 to 0.5.0).

Releases (18)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.12.0Latest
record
2026-01-28 · current release · diff ↗
0.11.0
record
2025-08-26 · diff ↗ ·
added 1 export
list_oml_collections
0.10.1
record
2025-07-24 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.10.0
record
2024-06-04 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.9.0
record
2023-09-13 · diff ↗ ·
added 3 exports
publish_collection, publish_data, publish_task
0.8.0
record
2023-07-06 · diff ↗ ·
removed 1 export
benchmark_grid_oml
0.7.2
record
2023-06-12 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.7.1
record
2023-03-14 · diff ↗
unarchivedReturned to CRAN
2022-12-12
archivedRemoved from CRAN
2022-12-12
policy violation On Internet access
0.7.0
record
2022-12-12 · diff ↗ ·
removed 5 exports
oml_collection, oml_data, oml_flow, oml_run, oml_task

added 5 exports
ocl, odt, oflw, orn, otsk
0.6.0
record
2022-10-12 · diff ↗ ·
removed 1 export
list_oml_data_sets

added 12 exports
OMLCollection, OMLFlow, OMLObject, OMLRun, benchmark_grid_oml, list_oml_data, oml_collection, oml_data, oml_flow, oml_run, oml_task, write_arff

Show 11 earlier eventsHide 11 earlier events

R
R 4.2.0 released · 2022-04-22
0.5.0
record
2021-09-24 · diff ↗ ·
added 5 exports
list_oml_evaluations, list_oml_flows, list_oml_measures, list_oml_runs, list_oml_setups
R
R 4.1.0 released · 2021-05-18
0.4.3
record
2021-04-16 · diff ↗
0.4.2
record
2021-02-22 · diff ↗
0.4.1
record
2021-01-27 · diff ↗ ·
added 1 export
read_arff
0.4.0
record
2020-10-20 · diff ↗
0.3.0
record
2020-10-05 · diff ↗
0.2.0
record
2020-08-24 · diff ↗
0.1.0
record
2020-08-07
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-08-07
Total releases: 18 / 6 yrs
License: LGPL-3 OSI
Minimum R: ≥ 3.1.0
Download size: 56 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mlr3oml")

Format

Fischer, S., & Lang, M. (2026). mlr3oml: Connector Between 'mlr3' and 'OpenML' (Version 0.12.0) [Computer software]. https://doi.org/10.32614/CRAN.package.mlr3oml

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 mlr3oml version 0.12.0 [Data set]. HJJB, LLC. Data release v2026-10-26. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-26, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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