R Observatory: Metrics for densityratio version 0.2.3

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

densityratio

0.2.3

Distribution Comparison Through Density Ratio Estimation

1packages depend

3.4Kdownloads / year

97.0%test coverage

13/13checks pass

Overview

About

Maintained by Thom VolkerFirst published 2025-05-194 releasesCRAN page ↗GitHub ↗

Fast, flexible and user-friendly tools for distribution comparison through direct density ratio estimation. The estimated density ratio can be used for covariate shift adjustment, outlier-detection, change-point detection, classification and evaluation of synthetic data quality. The package implements multiple non-parametric estimation techniques (unconstrained least-squares importance fitting, ulsif(), Kullback-Leibler importance estimation procedure, kliep(), spectral density ratio estimation, spectral(), kernel mean matching, kmm(), and least-squares hetero-distributional subspace search, lhss()). with automatic tuning of hyperparameters. Helper functions are available for two-sample testing and visualizing the density ratios. For an overview on density ratio estimation, see Sugiyama et al. (2012) doi:10.1017/CBO9781139035613 for a general overview, and the help files for references on the specific estimation techniques.

Install

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

install.packages("densityratio", 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("thomvolker/densityratio")

Development version from thomvolker/densityratio. 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-densityratio

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-densityratio

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-densityratio

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

Health

CRAN checks

13OK

Slowest check: 7.6 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.36

97.0%

Coverage · measured lines

100%

Documentation · exports

5

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
OK2026-07-18
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
10 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
9 OK · 4 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 3 earlier snapshots

NOTE2026-04-10
8 OK · 6 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-09
8 OK · 5 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
10 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 886 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 12%

Downloads

3.4K

CRAN downloads in the past year

Rank #10,615 · ~9/day · ~279/mo

Releases R versions

Daily download trend is not available in this view yet.

26130 days

90890 days

3.4K1 year

Compare downloads with other packages →

Also on434 r2u9 autocran

Repository

GitHub ↗ thomvolker/densityratio

11Stars

4Forks

6Open issues

0Open PRs

7Releases

450Commits

4Contributors

License GPL-3.0 · 450 commits · Last activity 2026-07-21 · 0% stars, 30d

Stars over time

2025-07-10 · 82026-07-07 · 11

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/thomvolker/densityratio on 2026-08-16.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Show all practices

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (5)

osqp Rcpp pbapply ggplot2 ggh4x

LinkingTo (3)

Rcpp RcppArmadillo RcppProgress

Suggests (4)

RcppArmadillo knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

automatedRecLin

Code & Tests

Datasets

People & History

People (3)

Maintainer (1)

Thom Volker

Author, Maintainer

Authors (1)

Thom Volker

Author, Maintainer

Contributors (2)

Carlos Gonzalez Poses

Contributor

Erik-Jan van Kesteren

Contributor

Package Timeline

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

0.2.3Latest
2026-07-14 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
0.2.2
2025-07-18 · diff ↗
0.2.1
2025-06-18 · diff ↗
0.2.0
2025-05-19
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-05-19
Total releases: 4 / 1 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 2.10
Bundled data: 497 KB / 7 files
Download size: 1.4 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("densityratio")

Format

Volker, T., Gonzalez Poses, C., & van Kesteren, E. (2026). densityratio: Distribution Comparison Through Density Ratio Estimation (Version 0.2.3) [Computer software]. https://doi.org/10.32614/CRAN.package.densityratio

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 densityratio version 0.2.3 [Data set]. HJJB, LLC. Data release v2026-08-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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