R Observatory: Metrics for recosystem version 0.5.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

recosystem

0.5.1Package record

Recommender System using Matrix Factorization

1packages dependsuggested by 2

17.8Kdownloads / year

–test coverage

11/13flavors OK

Overview

About

Maintained by Yixuan QiuCRAN page ↗GitHub ↗Issues ↗

R wrapper of the 'libmf' library https://www.csie.ntu.edu.tw/~cjlin/libmf/ for recommender system using matrix factorization. It is typically used to approximate an incomplete matrix using the product of two matrices in a latent space. Other common names for this task include "collaborative filtering", "matrix completion", "matrix recovery", etc. High performance multi-core parallel computing is supported in this package.

Changes in 0.5.1

Fixed incorrect use of data_file() functions in the documentation, pointed out by Michael Lai.

From inst/NEWS.Rd in the release

Install

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

install.packages("recosystem", 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("yixuan/recosystem")

Development version from yixuan/recosystem. 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-recosystem

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-recosystem

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-recosystem

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: ‘Yixuan Qiu <yixuan.qiu@cos.name>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Yixuan",
                      family = "Qiu",
                      role = c("aut", "cre"),
                      email = "yixuan.qiu@cos.name"),
               person(given = "David",
                      family = "Cortes",
                      role = "aut"),
               person(given = "Chih-Jen",
                      family = "Lin",
                      role = "aut"),
               person(given = "Yu-Chin",
                      family = "Juan",
                      role = "aut"),
               person(given = "Wei-Sheng",
                      family = "Chin",
                      role = "aut"),
               person(given = "Yong",
                      family = "Zhuang",
                      role = "aut"),
               person(given = "Bo-Wen",
                      family = "Yuan",
                      role = "aut"),
               person(given = "Meng-Yuan",
                      family = "Yang",
                      role = "aut"),
               person(given = c("other", "contributors.", "See", "file", "AUTHORS", "for"),
                      family = "details.",
                      role = "aut"))
as necessary.

NOTERd contentsr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Rd files without \usage:
  ‘output.Rd’ ‘predict.Rd’ ‘train.Rd’ ‘tune.Rd’
\arguments should not be documented without \usage.

CRAN check page ↗

Slowest check: 3.4 min · r-devel-windows-x86_64

Status changes

NOTE11 OK, 2 NOTENow
NOTE12 OK, 2 NOTE2026-04-22
ERROR11 OK, 2 NOTE, 1 ERROR2026-04-18
NOTE12 OK, 2 NOTE2026-04-10
ERROR12 OK, 1 NOTE, 1 ERROR2026-04-09
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.5.1

READMEYes · 1,177 wordsVignettesYes · 1 · dynamicNEWSYes · mentions 0.5.1Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 7
Examples that run: 50%2 run in a plain check · 2 never run
Exported functions with examples: 0%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 71%

Vignettes (1)

recosystem: Recommender System Using Parallel Matrix Factorization HTML

How these are measured

Downloads

17.8K

CRAN downloads in the past year

Rank #4,247 · ~49/day · ~1.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

59230 days

2.1K90 days

17.8K1 year

Compare downloads with other packages →

Also on391 r2u7 autocran2K conda_forge

How downloads are counted

Repository

yixuan/recosystem ↗Account: yixuan

84Stars

27Forks

2Open issues

1Open PRs

1Releases

269Commits

3Commit identities

matrix-factorizationrecommender-system

269 commits · Last activity 2023-05-05 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 75%
Median days to close, 50 most recently updated closed issues: 369
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-10-17 · 842026-07-07 · 84

How these are measured

PracticesBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/yixuan/recosystem on 2026-10-22.

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Installing recosystem adds 3 packages (2 with compiled code, 3.1 MB of source tarballs). Heaviest: Rcpp 1.8 MB, float 1.3 MB, RcppProgress 12 KB.

Depends (2)

R >= 3.3.0methods

Imports (2)

Rcpp float

LinkingTo (2)

Rcpp RcppProgress

Suggests (4)

knitr rmarkdown prettydocMatrix

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

2indirect

Imports 1

Suggested by 2

Depends, Imports or LinkingTo, most downloaded first

autostats

Suggests, most downloaded first

recommenderlab cmfrec

How these are counted

Code & Tests

People & History

People (from the free-text Author field) (9)

· added in 0.2.3

· added in 0.5

· added in 0.2.3

· added in 0.4

· added in 0.4

other contributors. See file AUTHORS for details.

· added in 0.2.4

Maintainer since 0.2.1 (2014)

Listed in earlier versions (2)

Wei-Sheng Chin for the original C++ code

no longer listed · 0.2.1

Yixuan Qiu for the R wrapper

no longer listed · 0.2.1

Releases (13)

Pick two releases to compare their code metrics.

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
0.5.1Latest
record
2023-05-05 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
0.5
record
2021-09-19 · diff ↗ ·
added 1 export
data_matrix
R
R 4.1.0 released · 2021-05-18
0.4.5
record
2021-05-14 · diff ↗
0.4.4
record
2021-01-10 · diff ↗
0.4.3
record
2020-05-18 · 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
0.4.2
record
2017-09-02 · diff ↗
R
R 3.4.0 released · 2017-04-21

Show 11 earlier eventsHide 11 earlier events

0.4.1
record
2017-03-21 · diff ↗
0.4
record
2016-07-13 · diff ↗ ·
added 5 exports
data_file, data_memory, out_file, out_memory, out_nothing
R
R 3.3.0 released · 2016-05-03
0.3
record
2015-05-30 · diff ↗
R
R 3.2.0 released · 2015-04-16
0.2.5
record
2015-02-08 · diff ↗
0.2.4
record
2014-09-22 · diff ↗
0.2.3
record
2014-09-11 · diff ↗
0.2.1
record
2014-09-05
R
R 3.1.0 released · 2014-04-10
removedRemoved from CRAN
Versions 0.2-1 and -3 were removed for misrepresentation of authorship

Package metadata

First published: 2014-09-05
Total releases: 13 / 12 yrs
License: BSD_3_clause + file LICENSE OSI
Copyright: see file COPYRIGHTS
Minimum R: ≥ 3.3.0
Download size: 176 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("recosystem")

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 recosystem version 0.5.1 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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