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mlr3

Machine Learning in R - Next Generation

v1.6.0 · Apr 2, 2026 · LGPL-3

Description

Efficient, object-oriented programming on the building blocks of machine learning. Provides 'R6' objects for tasks, learners, resamplings, and measures. The package is geared towards scalability and larger datasets by supporting parallelization and out-of-memory data-backends like databases. While 'mlr3' focuses on the core computational operations, add-on packages provide additional functionality.

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CRAN Check Status

1 NOTE
13 OK
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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-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 NOTE
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 details (1 non-OK)
NOTE r-oldrel-macos-x86_64

installed package size

installed size is  5.0Mb
  sub-directories of 1Mb or more:
    R      2.0Mb
    help   2.3Mb

Check History

NOTE 13 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE r-oldrel-macos-x86_64

installed package size

installed size is  5.0Mb
  sub-directories of 1Mb or more:
    R      2.0Mb
    help   2.3Mb

Reverse Dependencies (56)

Dependency Network

Dependencies Reverse dependencies R6 backports checkmate cli data.table evaluate future future.apply lgr mirai mlbench mlr3measures mlr3misc (>= 0.21.0) parallelly palmerpenguins +2 more dependencies GenericML MantaID mlr3cluster mlr3db mlr3fda mlr3fselect mlr3inferr mlr3learners mlr3mbo mlr3spatial mlr3spatiotempcv mlr3torch mlr3tuning mlr3verse mlr3viz +41 more reverse deps mlr3

Version History

updated 1.6.0 ← 1.5.0 diff Apr 2, 2026
new 1.5.0 Mar 10, 2026
updated 1.5.0 ← 1.4.0 diff Feb 26, 2026
updated 1.4.0 ← 1.3.0 diff Feb 18, 2026
updated 1.3.0 ← 1.2.0 diff Dec 2, 2025
updated 1.2.0 ← 1.1.0 diff Sep 13, 2025
updated 1.1.0 ← 1.0.1 diff Jul 29, 2025
updated 1.0.1 ← 1.0.0 diff Jul 2, 2025
updated 1.0.0 ← 0.23.0 diff Jun 17, 2025
updated 0.23.0 ← 0.22.1 diff Mar 11, 2025
updated 0.22.1 ← 0.22.0 diff Nov 26, 2024
updated 0.22.0 ← 0.21.1 diff Nov 23, 2024
updated 0.21.1 ← 0.21.0 diff Oct 17, 2024
updated 0.21.0 ← 0.20.2 diff Sep 23, 2024
updated 0.20.2 ← 0.20.1 diff Jul 28, 2024
updated 0.20.1 ← 0.20.0 diff Jul 21, 2024
updated 0.20.0 ← 0.19.0 diff Jun 27, 2024
updated 0.19.0 ← 0.18.0 diff Apr 23, 2024
updated 0.18.0 ← 0.17.2 diff Mar 4, 2024
updated 0.17.2 ← 0.17.1 diff Jan 8, 2024