R Observatory: Metrics for entropy version 1.3.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

entropy

1.3.2

Estimation of Entropy, Mutual Information and Related Quantities

45packages depend

139.8Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Korbinian StrimmerFirst published 2008-09-0316 releasesCRAN page ↗

Implements various estimators of entropy for discrete random variables, including the shrinkage estimator by Hausser and Strimmer (2009), the maximum likelihood and the Millow-Madow estimator, various Bayesian estimators, and the Chao-Shen estimator. It also offers an R interface to the NSB estimator. Furthermore, the package provides functions for estimating the Kullback-Leibler divergence, the chi-squared divergence, mutual information, and the chi-squared divergence of independence. It also computes the G statistic and the chi-squared statistic and corresponding p-values. Furthermore, there are functions for discretizing continuous random variables.

Install

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

install.packages("entropy", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-entropy

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-entropy

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-entropy

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

Health

CRAN checks

13OK

Slowest check: 46 s · r-devel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

0

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 33% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 100%
References docs: 43%

Downloads

139.8K

CRAN downloads in the past year

Rank #1,224 · ~383/day · ~11.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

9.8K30 days

27.2K90 days

139.8K1 year

Compare downloads with other packages →

Also on587 r2u11 autocran3.6K conda_forge82 c2d4u

Repository

GitHub ↗ strimmerlab/software

Repository practices

Upstream repositoryBeta

Repository github.com/strimmerlab/software is linked, but repository-practices checks have not run for it yet.

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

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.4.0

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Code & Tests

People & History

People (2)

Maintainer (1)

Korbinian Strimmer

Author, Maintainer

Authors (2)

Korbinian Strimmer

Author, Maintainer

Jean Hausser

Author · added in 1.1.3

Listed in earlier versions (1)

Jean Hauser

no longer listed · 1.0.0 to 1.1.2

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.3.2Latest
2025-04-08 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.3.1
2021-10-02 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.3.0
2021-04-25 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
1.2.1
2014-11-14 · diff ↗

Show 23 earlier events

R
R 3.1.0 released · 2014-04-10
1.2.0
2013-07-16 · diff ↗
1.1.9
2013-06-22 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.1.8
2013-03-25 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.1.7
2012-01-20 · diff ↗
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
1.1.6
2011-03-21 · diff ↗
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
1.1.5
2010-04-11 · diff ↗
R
R 2.10.0 released · 2009-10-26
1.1.4
2009-08-08 · diff ↗
R
R 2.9.0 released · 2009-04-17
1.1.3
2009-01-09 · diff ↗
1.1.2
2008-11-22 · diff ↗
1.1.1
2008-10-26 · diff ↗
R
R 2.8.0 released · 2008-10-20
1.1.0
2008-09-29 · diff ↗
1.0.0
2008-09-03
R
R 2.7.0 released · 2008-04-22

Package metadata

First published: 2008-09-03
Total releases: 16 / 18 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 3.4.0
Download size: 15 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("entropy")

Format

Strimmer, K., & Hausser, J. (2025). entropy: Estimation of Entropy, Mutual Information and Related Quantities (Version 1.3.2) [Computer software]. https://doi.org/10.32614/CRAN.package.entropy

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 entropy version 1.3.2 [Data set]. HJJB, LLC. Data release v2026-08-17. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-17, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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