caret

Overview

About

Maintained by Max KuhnFirst published 2007-10-05168 releasesCRAN page ↗GitHub ↗

Misc functions for training and plotting classification and regression models.

Install

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

install.packages("caret", 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("topepo/caret")

Development version from topepo/caret. 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-caret

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-caret

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-caret

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

Health

CRAN checks

1ERROR4NOTE8OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64
ERROR r-oldrel-macos-x86_64

Slowest check: 11.2 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.10

33.6%

Coverage · measured lines

100%

Documentation · exports

16

Dependencies · direct

Check history

ERROR2026-03-10
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 55%
Documented parameters: 88%
Return-value docs: 92%
References docs: 34%

Downloads

2.1M

CRAN downloads in the past year

Rank #285 · ~5.8K/day · ~175.2K/mo

Releases R versions

Daily download trend is not available in this view yet.

115K30 days

457.1K90 days

2.1M1 year

Compare downloads with other packages →

Also on8.6K r2u140 autocran279.5K conda_forge9.5K c2d4u

Repository

GitHub ↗ topepo/caret

1,672Stars

628Forks

211Open issues

30Open PRs

4Releases

2,070Commits

114Contributors

2,070 commits · Last activity 2026-07-22 · -0.1% stars, 30d

Stars over time

2025-07-21 · 1,6362026-07-15 · 1,673

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/topepo/caret on 2026-07-19.

Continuous integration (1)

GitHub Actions

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

Governance and community (2)

Issue templatesCODEOWNERS

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

Dependencies

Declared dependencies

35 external dependencies (excludes base and recommended)

Depends (3)

R >= 3.2.0ggplot2lattice

Imports (14)

e1071 foreachgrDevicesmethodsModelMetricsnlmeplyr pROC recipes reshape2statsstats4utilswithr

LinkingTo (0)

none

Suggests (31)

BradleyTerry2 covr Cubist dplyr earth ellipse fastICA gam ipred kernlab klaR knitrMASSMatrixmdamgcvmlbench MLmetricsnnetpamr party pls proxy randomForest RANN rmarkdownrpartspls superpc testthat themis

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

317direct

32indirect

and 269 more packages.

Code & Tests

Code Composition

R 31,190 (72%)Rd 11,866 (27%)C 259 (1%)Vignettes 242 (1%)

Code characteristics

Object systems

S3251

Cyclomatic complexity: 3.0 median / 139 max
Test cases: 105 / 0.10 per code line

Test coverage

Line coverage

34%

Expression

32.0%

Tests / Examples

33.6% / 18% ex

Functions

549 153 exported

Complexity

6.1 avg / 139 max

Call network

549 nodes / 572 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

549 functions

Function	Cyclo	Coverage
F_meas exp	1	0%
LPH07_1 exp	5	0%
LPH07_2 exp	2	0%
MAE exp	1	0%
SLC14_2 exp	2	0%
avNNet exp	1	0%

Datasets

Bundled datasets · 17

Name	Class	Rows × Cols	Also ships in
GermanCredit	data.frame	1,000 × 62	–
Sacramento	data.frame	932 × 9	in 2 packages
bbbDescr	data.frame	208 × 134	–
cars	data.frame	804 × 18	in 2 packages
cox2Class	factor	–	–
cox2Descr	data.frame	462 × 255	–
cox2IC50	vector	–	–
dhfr	data.frame	325 × 229	–
fattyAcids	data.frame	96 × 7	–
logBBB	vector	–	–
mdrrClass	factor	–	–
mdrrDescr	data.frame	528 × 342	–
oilType	factor	–	–
potteryClass	factor	–	–
scat	data.frame	110 × 19	in 2 packages
scat_orig	data.frame	122 × 20	–
segmentationData	data.frame	2,019 × 61	–

People & History

People (17)

Maintainer (1)

Max Kuhn

Author, Maintainer

Authors (1)

Max Kuhn

Author, Maintainer

Contributors (16)

R Core Team

Contributor · added in 6.0-85

Michael Benesty

Contributor · added in 6.0-41

Can Candan

Contributor · added in 6.0-72

Tony Cooper

Contributor · added in 5.15-052

Allan Engelhardt

Contributor · added in 4.17

Tyler Hunt

Contributor · added in 6.0-85

Chris Keefer

Contributor · added in 4.11

Brenton Kenkel

Contributor · added in 6.0-37

Show 8 more contributors

Reynald Lescarbeau

Contributor · added in 6.0-41

Zachary Mayer

Contributor · added in 6.0-21

Luca Scrucca

Contributor · added in 6.0-57

Yuan Tang

Contributor · added in 6.0-57

Contributor

Contributor

Contributor

Contributor · added in 6.0-41

Listed in earlier versions (8)

Max Kuhn. Contributions form Jed Wing

no longer listed · 2.7.0 to 3.16

Max Kuhn. Contributions from Jed Wing

no longer listed · 2.7.1 to 6.0-84

the R Core Team

no longer listed · 6.0-21 to 6.0-84

Michael Benesty.

no longer listed · 6.0-37

and Luca Scrucca.

no longer listed · 6.0-41 to 6.0-52

Can Candan.

no longer listed · 6.0-57 to 6.0-58

and Can Candan.

no longer listed · 6.0-62 to 6.0-71

and Tyler Hunt.

no longer listed · 6.0-72 to 6.0-84

Package Timeline

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

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R 4.6.0 released · 2026-04-24
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R 4.5.0 released · 2025-04-11
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Package metadata

First published: 2007-10-05
Total releases: 168 / 19 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.2.0
Bundled data: 1.5 MB / 13 files
Download size: 2.2 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

High-Performance and Parallel Computing with R Machine Learning & Statistical Learning Analysis of Spatial Data