R Observatory: Metrics for sMTL version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

sMTL

0.1.0Package record

Sparse Multi-Task Learning

0packages depend

2.2Kdownloads / year

–test coverage

11/13flavors OK

Overview

About

Maintained by Gabriel LoewingerCRAN page ↗GitHub ↗Website ↗Issues ↗Declared funders: National Science Foundation Grant DMS1810829, National Science Foundation Grant DMS2113707 and 3 more

Implements L0-constrained Multi-Task Learning and domain generalization algorithms. The algorithms are coded in Julia allowing for fast implementations of the coordinate descent and local combinatorial search algorithms. For more details, see a preprint of the paper: Loewinger et al., (2022) arXiv:2212.08697.

Install

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

install.packages("sMTL", 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("gloewing/sMTL")

Development version from gloewing/sMTL. 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-smtl

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-sMTL

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-sMTL

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

2NOTE11OK

Check messages

NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Maintainer: ‘Gabriel Loewinger <gloewinger@gmail.com>’

The Description field contains
  Loewinger et al., (2022) <arXiv:2212.08697>.
Please refer to arXiv e-prints via their arXiv DOI <doi:10.48550/arXiv.YYMM.NNNNN>.

CRAN check page ↗

Slowest check: 1.5 min · r-oldrel-windows-x86_64

Status changes

NOTE11 OK, 2 NOTE2026-06-09
ERROR11 OK, 1 NOTE, 1 ERROR2026-06-08
NOTE11 OK, 2 NOTE2026-05-02
ERROR9 OK, 2 NOTE, 1 ERROR2026-04-25
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMENoVignettesNoNEWSNoCitation fileNoWebsiteYes

Help pages: 16
Examples that run: 25%1 run in a plain check · 3 never run
Exported functions with examples: 25%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

2.2K

CRAN downloads in the past year

Rank #22,768 · ~6/day · ~187/mo

Releases R versions

Daily download trend is not available in this view yet.

21130 days

58390 days

2.2K1 year

Compare downloads with other packages →

Also on66 r2u4 autocran

How downloads are counted

Repository

gloewing/smtl ↗Account: gloewing

2Stars

1Forks

0Open issues

0Open PRs

0Releases

273Commits

2Commit identities

License file reads as MIT · 273 commits · Last activity 2024-06-03 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2023-12-23 · 12026-07-07 · 2

How these are measured

PracticesBeta

Checks run against github.com/gloewing/smtl on 2026-10-22.

No development-tooling practices detected in the upstream repository.

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Installing sMTL adds 73 packages (40 with compiled code, 55 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 3.5.0

Imports (5)

glmnet JuliaCall JuliaConnectoR caret dplyr

LinkingTo (0)

none

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (9)

Gabriel Loewinger

Author, Maintainer since 0.1.0 (2023)

Kayhan Behdin

Author

Rahul Mazumder

Author

Giovanni Parmigiani

Author

National Science Foundation Grant DMS1810829

Funder

National Science Foundation Grant DMS2113707

Funder

National Institute on Drug Abuse (NIH) Grant F31DA052153

Funder

National Science Foundation Grant NSF-IIS1718258,

Funder

Office of Naval Research Grant ONR N000142112841

Funder

Releases (1)

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
R
R 4.3.0 released · 2023-04-21
0.1.0Latest
record
2023-02-06 · current release
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2023-02-06
Total releases: 1 / 3 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Download size: 65 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("sMTL")

Format

Loewinger, G., Behdin, K., Grant DMS1810829, N. S. F., Grant DMS2113707, N. S. F., Grant F31DA052153, N. I. o. D. A. (., Grant NSF-IIS1718258,, N. S. F., Grant ONR N000142112841, O. o. N. R., Mazumder, R., & Parmigiani, G. (2023). sMTL: Sparse Multi-Task Learning (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.sMTL

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 sMTL version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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