R Observatory: Metrics for mlr3mbo version 1.2.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mlr3mbo

1.2.1Package record

Flexible Bayesian Optimization

6packages depend

66.1Kdownloads / year

68.1%test coverage

13/13flavors OK

Overview

About

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

A modern and flexible approach to Bayesian Optimization / Model Based Optimization building on the 'bbotk' package. 'mlr3mbo' is a toolbox providing both ready-to-use optimization algorithms as well as their fundamental building blocks allowing for straightforward implementation of custom algorithms. Single- and multi-objective optimization is supported as well as mixed continuous, categorical and conditional search spaces. Moreover, using 'mlr3mbo' for hyperparameter optimization of machine learning models within the 'mlr3' ecosystem is straightforward via 'mlr3tuning'. Examples of ready-to-use optimization algorithms include Efficient Global Optimization by Jones et al. (1998) doi:10.1023/A:1008306431147, ParEGO by Knowles (2006) doi:10.1109/TEVC.2005.851274 and SMS-EGO by Ponweiser et al. (2008) doi:10.1007/978-3-540-87700-4_78.

Changes in 1.2.1

compatibility: mlr3 1.7.2

From NEWS.md in the release

Install

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

install.packages("mlr3mbo", 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/mlr3mbo")

Development version from mlr-org/mlr3mbo. 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-mlr3mbo

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-mlr3mbo

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-mlr3mbo

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: 15.8 min · r-release-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-02
ERROR10 OK, 3 ERROR2026-07-25
NOTE12 OK, 1 NOTE2026-07-11
OK13 OK2026-06-08

Show 4 earlier changesHide 4 earlier changes

ERROR12 OK, 1 ERROR2026-06-07
OK14 OK2026-04-10
ERROR13 OK, 1 ERROR2026-04-09
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.2.1

READMEYes · 337 wordsVignettesNoNEWSYes · 100% structured · mentions 1.2.1Citation fileYes · cites a publicationWebsiteYes · pkgdown

Help pages: 67includes a package overview page
Examples that run: 78%40 run in a plain check (22 of them under a condition) · 11 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 80%
Documented parameters: 100%
Return-value docs: 31%
Help pages citing references: 24%

How these are measured

Downloads

66.1K

CRAN downloads in the past year

Rank #1,637 · ~181/day · ~5.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

4.3K30 days

13.7K90 days

66.1K1 year

Compare downloads with other packages →

Also on3.4K r2u5 autocran4.7K conda_forge

How downloads are counted

Repository

mlr-org/mlr3mbo ↗Organization: mlr-org

27Stars

1Forks

20Open issues

3Open PRs

20Releases

607Commits

12Commit identities

machine-learningroptimizationbayesian-optimizationmodel-based-optimizationbbotkmlr3r-package

607 commits · Last activity 2026-10-06 · 0% stars, 30d · Default branch at 1.2.1.9000, ahead of CRAN 1.2.1 (checked 2026-10-22)

Responsiveness

How these are sampled

PRs merged (all time): 91%
Median days to close, 50 most recently updated closed issues: 50
Median days to close, 50 most recently updated closed PRs: 1

Stars over time

2025-07-28 · 262026-08-23 · 27

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/mlr3mbo on 2026-10-22.

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 2026-10-06 · The repository has a site deploy workflow

pkgdown site last built 2026-07-26

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 v4 (2026-10-20)

AI coding toolsBeta

This repository shows signs of AI coding tools.

GitHub Copilotfirst seen 2025-07-05
Pull request: opened by its own account
Claude Codefirst seen 2026-03-03
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 68 crediting it in the message
Cursorfirst seen 2026-03-04
Named in .Rbuildignore: .cursor
Gemini CLIfirst seen 2026-03-13
Config: a file or ignore line, not recorded which
Codexfirst seen 2026-09-18
Seen in the repository: .codex
Named in .Rbuildignore: .codex
Commits: at least 1 crediting it in the message

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

Seen in the repository: AGENTS.md

Models named in its commits

Claude Opus 4.832 commits · Jul 2026
Claude Fable 529 commits · Jun to Jul 2026
Claude Opus 4.64 commits · Mar 2026
Claude Opus 4.71 commit · Apr 2026
Claude Opus 51 commit · Aug 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

26 external dependencies (excludes base and recommended)

Installing mlr3mbo adds 32 packages (17 with compiled code, 25 MB of source tarballs). Heaviest: data.table 5.7 MB, spacefillr 3.1 MB, palmerpenguins 2.9 MB.

Depends (3)

R >= 3.1.0mlr3 mlr3tuning

Imports (8)

bbotk checkmate data.table lgr (>= 0.3.4)mlr3misc paradox spacefillr R6

LinkingTo (0)

none

Suggests (17)

emoa DiceKriging fastGHQuad lhs mlr3learners mirai mlr3pipelines moocore nloptr processx ranger rgenoudrpartredux rush stringi testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

6direct

1indirect

Imports 6

Depends, Imports or LinkingTo, most downloaded first

mlr3verse MicrobiomeStat tramnet glmnetr mlr3automl evoFE

How these are counted

Code & Tests

People & History

People (13)

Marc Becker

Maintainer since 0.3.1 (2025), Author

Author

Author

Author

Author

Author

Author

Author

Copyright holder

Copyright holder

Copyright holder

Copyright holder

Copyright holder

Previously maintained by Lennart Schneider (0.1.1 to 0.3.0).

Releases (20)

Pick two releases to compare their code metrics.

1.2.1Latest
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2026-07-26 · current release · diff ↗
1.2.0
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2026-07-21 · diff ↗
1.1.1
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2026-04-24 · diff ↗
R
R 4.6.0 released · 2026-04-24
1.1.0
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2026-03-18 · diff ↗
1.0.0
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2026-02-27 · diff ↗ ·
added 8 exports
AcqOptimizerDirect, AcqOptimizerLbfgsb, AcqOptimizerLocalSearch, AcqOptimizerRandomSearch, error_acq_optimizer, error_random_interleave, error_surrogate_update, mlr_acqoptimizers
0.3.3
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2025-10-10 · diff ↗
0.3.2
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2025-10-02 · diff ↗
0.3.1
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2025-08-19 · diff ↗
0.3.0
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2025-06-03 · diff ↗ ·
added 10 exports
AcqFunctionEILog, InputTrafo, InputTrafoUnitcube, OutputTrafo, OutputTrafoLog, OutputTrafoStandardize, it, mlr_input_trafos, mlr_output_trafos, ot
R
R 4.5.0 released · 2025-04-11
0.2.9
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2025-03-04 · diff ↗
0.2.8
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2024-11-21 · diff ↗ ·
added 1 export
redis_available
0.2.7
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2024-11-15 · diff ↗ ·
added 6 exports
AcqFunctionStochasticCB, AcqFunctionStochasticEI, OptimizerADBO, OptimizerAsyncMbo, TunerADBO, TunerAsyncMbo
0.2.6
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2024-10-16 · diff ↗
0.2.5
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2024-09-25 · diff ↗ ·
added 2 exports
AcqFunctionMulti, acqfs

Show 9 earlier eventsHide 9 earlier events

0.2.4
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2024-07-06 · diff ↗
0.2.3
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2024-07-01 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.2.2
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2024-03-01 · diff ↗ ·
added 2 exports
default_gp, default_rf
0.2.1
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2023-06-05 · diff ↗ ·
removed 6 exports
default_acqfun, default_acqopt, default_loopfun, result_by_default, result_by_surrogate_design, srlrnc

added 13 exports
AcqFunctionEHVI, AcqFunctionEHVIGH, AcqFunctionSD, ResultAssigner, ResultAssignerArchive, ResultAssignerSurrogate, bayesopt_emo, default_acqfunction, default_acqoptimizer, default_loop_function, default_result_assigner, mlr_result_assigners, ras
R
R 4.3.0 released · 2023-04-21
0.1.2
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2023-03-03 · diff ↗ ·
added 1 export
AcqFunctionAEI
0.1.1
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2022-11-18
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-11-18
Total releases: 20 / 4 yrs
License: LGPL-3 OSI
Minimum R: ≥ 3.1.0
Download size: 167 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("mlr3mbo")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.1016/j.patter.2026.101614.

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 mlr3mbo version 1.2.1 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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