alpaca

0.3.5

Fit GLM's with High-Dimensional k-Way Fixed Effects

3packages depend

39.8Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Amrei StammannFirst published 2018-07-317 releasesCRAN page ↗GitHub ↗

Provides a routine to partial out factors with many levels during the optimization of the log-likelihood function of the corresponding generalized linear model (glm). The package is based on the algorithm described in Stammann (2018) doi:10.48550/arXiv.1707.01815 and is restricted to glm's that are based on maximum likelihood estimation and nonlinear. It also offers an efficient algorithm to recover estimates of the fixed effects in a post-estimation routine and includes robust and multi-way clustered standard errors. Further the package provides analytical bias corrections for binary choice models derived by Fernandez-Val and Weidner (2016) doi:10.1016/j.jeconom.2015.12.014 and Hinz, Stammann, and Wanner (2020) doi:10.48550/arXiv.2004.12655.

Install

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

install.packages("alpaca", 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("amrei-stammann/alpaca")

Development version from amrei-stammann/alpaca. 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-alpaca

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

# 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-alpaca

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

Health

CRAN checks

13OK

Slowest check: 3.3 min · r-oldrel-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-05-10
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-05-09
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 955 wordsVignettesYes · staticpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 0%
Documented parameters: 87%
Return-value docs: 100%
References docs: 32%

Downloads

39.8K

CRAN downloads in the past year

Rank #2,156 · ~109/day · ~3.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.9K30 days

10.9K90 days

39.8K1 year

Compare downloads with other packages →

Also on470 r2u34 autocran3K conda_forge61 c2d4u

Repository

GitHub ↗ amrei-stammann/alpaca

47Stars

5Forks

12Open issues

0Open PRs

0Releases

122Commits

3Contributors

122 commits · Last activity 2025-12-31 · 0% stars, 30d

Stars over time

2025-06-27 · 462026-07-07 · 47

Repository practices

Upstream repositoryBeta

Checks run against github.com/amrei-stammann/alpaca on 2026-07-19.

No development-tooling practices detected in the upstream repository.

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

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.1.0

Imports (6)

data.table FormulaMASSRcppstatsutils

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (5)

bife car knitr lfe rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

bife lfe stargazer2

Code & Tests

People & History

People (2)

Maintainer (1)

Amrei Stammann

Author, Maintainer

Authors (2)

Amrei Stammann

Author, Maintainer

Daniel Czarnowske

Author

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.3.5Latest
2025-10-27 · current release · diff ↗
unarchivedReturned to CRAN
2025-10-27
archivedRemoved from CRAN
2025-09-17
email to the maintainer is undeliverable
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
0.3.4
2022-08-10 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.3.3
2020-10-30 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.3.2
2020-01-12 · diff ↗
0.3.1
2019-05-24 · diff ↗
0.3
2019-05-15 · diff ↗
R
R 3.6.0 released · 2019-04-26

Show 2 earlier events

0.2
2018-07-31
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2018-07-31
Total releases: 7 / 8 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.1.0
Download size: 78 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Causal Inference Econometrics

Report a problem with this page →