R Observatory: Metrics for chopper version 1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

chopper

1.0Package record

Changepoint-Aware Ensemble for Probabilistic Modeling

0packages depend

6.1Kdownloads / year

85.4%test coverage

13/13flavors OK

Overview

About

Maintained by Giancarlo VercellinoCRAN page ↗Website ↗

Implements a changepoint-aware ensemble forecasting algorithm that combines Theta, TBATS (Trigonometric, Box-Cox transformation, ARMA errors, Trend, Seasonal components), and ARFIMA (AutoRegressive, Fractionally Integrated, Moving Average) using a product-of-experts approach for robust probabilistic prediction.

Changes in 1.0

Initial CRAN submission.

From NEWS.md in the release

Install

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

install.packages("chopper", 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-chopper

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-chopper

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-chopper

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: 4.3 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0

READMENoVignettesNoNEWSYes · 67% structured · mentions 1.0Citation fileNoWebsiteYes

Help pages: 2includes a package overview page
Examples that run: 50%1 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

6.1K

CRAN downloads in the past year

Rank #10,681 · ~17/day · ~512/mo

Releases R versions

Daily download trend is not available in this view yet.

30630 days

98090 days

6.1K1 year

Compare downloads with other packages →

Also on81 r2u3 autocran

How downloads are counted

Dependencies

Declared dependencies

14 external dependencies (excludes base and recommended)

Installing chopper adds 61 packages (36 with compiled code, 44 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, imputeTS 2.1 MB.

Depends (1)

R >= 2.10

Imports (12)

normalp purrr ald evd (>= 2.3-6.1)GeneralizedHyperbolic fGarch (>= 4022.89)forecast imputeTS changepoint lubridate ggplot2 scales (>= 1.3.0)

LinkingTo (0)

none

Suggests (2)

knitr testthat

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 (1)

Giancarlo Vercellino

Releases (1)

R
R 4.6.0 released · 2026-04-24
1.0Latest
record
2025-05-27 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-05-27
Total releases: 1 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 2.10
Bundled data: 29 KB / 1 file
Download size: 39 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("chopper")

Format

Vercellino, G. (2025). chopper: Changepoint-Aware Ensemble for Probabilistic Modeling (Version 1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.chopper

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 chopper version 1.0 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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