R Observatory: Metrics for copulaSFM version 0.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

copulaSFM

0.2.0Package record

Copula-Based Stochastic Frontier Models

0packages depend

3.4Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Woraphon YamakaCRAN page ↗

Provides estimation procedures for copula-based stochastic frontier models for cross-sectional data. The package implements maximum likelihood estimation of stochastic frontier models allowing flexible dependence structures between inefficiency and noise terms through various copula families (e.g., Gaussian and Student-t). It enables estimation of technical efficiency scores, log-likelihood values, and information criteria (AIC and BIC). The implemented framework builds upon stochastic frontier analysis introduced by Aigner, Lovell and Schmidt (1977) doi:10.1016/0304-4076(77)90052-5 and the copula theory described in Joe (2014, ISBN:9781466583221). Empirical applications of copula-based stochastic frontier models can be found in Wiboonpongse et al. (2015) doi:10.1016/j.ijar.2015.06.001 and Maneejuk et al. (2017, ISBN:9783319562176).

Changes in 0.2.0

Major Improvements

Added support for two-parameter copula families (Student-t, BB families).
Extended copSFM() to accept RHO2, LB2, and UB2.
Updated TE() to handle two-parameter copulas.
Added nSim and seed arguments for reproducible Monte Carlo simulation.
Improved numerical stability of likelihood and technical efficiency estimation.
Expanded documentation to clearly describe supported copula families and parameter bounds.

Minor Changes

Code refactoring for improved stability.
Documentation improvements and formatting updates.

From NEWS.md in the release

Install

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

install.packages("copulaSFM", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-copulasfm

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-copulaSFM

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-copulaSFM

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

13OK

CRAN check page ↗

Slowest check: 51 s · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.2.0

READMEYes · 16 wordsVignettesNoNEWSYes · 67% structured · mentions 0.2.0Citation fileYes · software entry onlyWebsitenot declared in DESCRIPTION

Help pages: 3
Examples that run: 0%3 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: not tracked
Return-value docs: not tracked
Help pages citing references: 67%

How these are measured

Downloads

3.4K

CRAN downloads in the past year

Rank #11,850 · ~9/day · ~280/mo

Releases R versions

Daily download trend is not available in this view yet.

38130 days

93390 days

3.4K1 year

Compare downloads with other packages →

Also on63 r2u2 autocran

How downloads are counted

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Installing copulaSFM adds 4 packages (3 with compiled code, 1.4 MB of source tarballs). Heaviest: mvtnorm 1.0 MB, VineCopula 439 KB, truncnorm 11 KB.

Depends (0)

none

Imports (5)

statsgraphicstruncnorm VineCopulaMASS

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (3)

Woraphon Yamaka

Author, Maintainer since 0.1.0 (2026)

Nuttaphong Kaewtathip

Author

Paravee Maneejuk

Author

Releases (2)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.2.0Latest
record
2026-03-05 · current release · diff ↗
0.1.0
record
2026-02-18
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-02-18
Total releases: 2 / 1 yrs
License: GPL-3 OSI
Download size: 8.8 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("copulaSFM")

The package provides a citation file, so citation() returns the authors' own entry.

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 copulaSFM version 0.2.0 [Data set]. HJJB, LLC. Data release v2026-10-26. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-26, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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