R Observatory: Metrics for outForest version 1.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

outForest

1.0.1Package record

Multivariate Outlier Detection and Replacement

0packages depend

3Kdownloads / year

93.2%test coverage

13/13flavors OK

Overview

About

Maintained by Michael MayerCRAN page ↗GitHub ↗Issues ↗

Provides a random forest based implementation of the method described in Chapter 7.1.2 (Regression model based anomaly detection) of Chandola et al. (2009) doi:10.1145/1541880.1541882. It works as follows: Each numeric variable is regressed onto all other variables by a random forest. If the scaled absolute difference between observed value and out-of-bag prediction of the corresponding random forest is suspiciously large, then a value is considered an outlier. The package offers different options to replace such outliers, e.g. by realistic values found via predictive mean matching. Once the method is trained on a reference data, it can be applied to new data.

Changes in 1.0.1

Use latex formulas in help files.
Improved documentation.
Fixed typos.

From NEWS.md in the release

Install

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

install.packages("outForest", 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("mayer79/outForest")

Development version from mayer79/outForest. 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-outforest

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-outForest

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-outForest

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: 1.2 min · r-oldrel-windows-x86_64

Status changes

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 1.0.1

READMEYes · 190 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 1.0.1Citation fileNo

Help pages: 9
Examples that run: 100%9 run in a plain check
Exported functions with examples: 100%
Documented parameters: 97%
Return-value docs: 100%
Help pages citing references: 11%

Vignettes (1)

Using 'outForest' HTML

How these are measured

Downloads

3K

CRAN downloads in the past year

Rank #12,586 · ~8/day · ~250/mo

Releases R versions

Daily download trend is not available in this view yet.

39930 days

89190 days

3K1 year

Compare downloads with other packages →

Also on86 r2u3 autocran

How downloads are counted

Repository

mayer79/outforest ↗Account: mayer79

14Stars

2Forks

1Open issues

0Open PRs

5Releases

86Commits

1Commit identities

machine-learningoutlieroutlier-analysisoutlier-detectionrandom-forestrstats

License file reads as GPL-2.0 · 86 commits · Last activity 2025-04-06 · 0% stars, 30d · Default branch at 1.0.2, ahead of CRAN 1.0.1 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 17
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2024-08-08 · 132026-07-07 · 14

How these are measured

PracticesBeta

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

Checks run against github.com/mayer79/outforest on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Docs source (2)

GitHub Pages site last deployed 2025-04-06 · The repository has a site deploy workflow

Coverage (1)

Coverage reporting

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing outForest adds 5 packages (4 with compiled code, 3.8 MB of source tarballs). Heaviest: Rcpp 1.8 MB, RcppEigen 1.7 MB, ranger 175 KB.

Depends (1)

R >= 3.5.0

Imports (5)

FNN rangergraphicsstatsmissRanger

LinkingTo (0)

none

Suggests (3)

knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Michael Mayer

Author, Maintainer since 0.1.0 (2020)

Releases (6)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.0.1Latest
record
2023-05-21 · current release · diff ↗
1.0.0
record
2023-04-25 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1.3
record
2023-03-30 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.1.2
record
2022-01-31 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.1.1
record
2021-01-07 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.1.0
record
2020-01-13
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2020-01-13
Total releases: 6 / 6 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Download size: 85 KB

Appears in task views

Anomaly Detection

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("outForest")

Format

Mayer, M. (2023). outForest: Multivariate Outlier Detection and Replacement (Version 1.0.1) [Computer software]. https://doi.org/10.32614/CRAN.package.outForest

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 outForest version 1.0.1 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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