R Observatory: Metrics for alphaN version 0.3.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

alphaN

0.3.0

Set Alpha Based on Sample Size Using Bayes Factors

0packages depend

3.1Kdownloads / year

97.9%test coverage

13/13checks pass

Overview

About

Maintained by Jesper WulffFirst published 2023-01-124 releasesCRAN page ↗GitHub ↗

Sets the alpha level for coefficients in a regression model as a decreasing function of the sample size through the use of Jeffreys' Approximate Bayes factor. You tell alphaN() your sample size, and it tells you to which value you must lower alpha to avoid Lindley's Paradox. For details, see Wulff and Taylor (2024) doi:10.1177/14761270231214429. Alpha can also be calibrated to the effect-size and moment Bayes factors of Klauer, Meyer-Grant, and Kellen (2025) doi:10.3758/s13423-024-02612-2, which center the alternative hypothesis on an effect size of your choosing.

Install

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

install.packages("alphaN", 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("jespernwulff/alphaN")

Development version from jespernwulff/alphaN. 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-alphan

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-alphaN

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-alphaN

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

Health

CRAN checks

13OK

Slowest check: 5.4 min · r-release-macos-arm64

Code health

Yes

Tests · ratio 0.62

97.9%

Coverage · measured lines

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

READMEYes · 810 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

3.1K

CRAN downloads in the past year

Rank #12,150 · ~9/day · ~262/mo

Releases R versions

Daily download trend is not available in this view yet.

32230 days

83590 days

3.1K1 year

Compare downloads with other packages →

Also on145 r2u59 autocran

Repository

GitHub ↗ jespernwulff/alphan

8Stars

1Forks

1Open issues

0Open PRs

2Releases

91Commits

1Contributors

91 commits · Last activity 2026-07-27

Stars over time

2024-02-10 · 82026-07-07 · 8

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/jespernwulff/alphan on 2026-08-23.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Development tooling

AI-assisted toolingBeta

Uses AI-assisted development tooling (declared in repo)

Earliest detected marker: claude on 2026-07-11

claude

Most recent: claude on 2026-07-11

Evidence

claude: on 2026-07-11 · evidence B, D

How this is detected·Detection ruleset v2 (updated 2026-07-29)

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.0

Imports (0)

none

LinkingTo (0)

none

Suggests (7)

BayesFactor JustifyAlpha knitr pwrss rmarkdown spelling testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Jesper Wulff

Author, Maintainer

Authors (2)

Jesper Wulff

Author, Maintainer

Luke Taylor

Author

Package Timeline

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

0.3.0Latest
2026-07-27 · current release · diff ↗
0.2.0
2026-07-12 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.1.2
2025-07-13 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.1.0
2023-01-12
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2023-01-12
Total releases: 4 / 3 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.0
Download size: 116 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("alphaN")

Format

Wulff, J., & Taylor, L. (2026). alphaN: Set Alpha Based on Sample Size Using Bayes Factors (Version 0.3.0) [Computer software]. https://doi.org/10.32614/CRAN.package.alphaN

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 alphaN version 0.3.0 [Data set]. HJJB, LLC. Data release v2026-08-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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