R Observatory: Metrics for KernelICA version 2.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

KernelICA needs ManifoldOptim, which CRAN will archive unless its check problems are fixed by Oct 31.

KernelICA

2.0.0Package record

Kernel Independent Component Analysis

0packages depend

769downloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Klaus NordhausenCRAN page ↗

The kernel independent component analysis (kernel ICA) method introduced by Bach and Jordan (2002) doi:10.1162/153244303768966085. A separate function for the incomplete Cholesky decomposition used in kernel ICA is also provided.

Changes in 2.0.0

Package reinstatement

This release reinstates **KernelICA** on CRAN after the package was previously archived.
The issues that led to the archival have been resolved, and the package has been updated to comply with current CRAN policies and checks.
Package maintenance has been transferred to a new maintainer.
Updated package metadata to reflect the current authorship and maintainer information.

Bug fixes

Fixed an argument-order bug in the Hermite kernel implementation affecting kernel_matrix(..., kernel = "hermite") and incomplete_cholesky(..., kernel = "hermite").
Fixed validation of user-supplied initialization matrices in kernel_ica().
Fixed selection of the best solution across multiple random starts in kernel_ica().

Show all changes in 2.0.0Hide the rest of the changes in 2.0.0

Improved handling of empty vectors and zero-length loops in several functions by replacing 1:n and 1:length(x) with seq_len() and seq_along().
Added a guard in MD_distant_matrices() for cases where no additional matrices need to be generated.
incomplete_cholesky() now accepts integer input consistently by coercing input to numeric.
kernel_matrix() now validates the kernel argument using match.arg().
Corrected the sign in the exponent of the Gaussian kernel.

Build system

Modernized the C++ implementation by replacing manual memory management with std::unique_ptr.
Added missing standard library includes required by current compilers.
Added -DNDEBUG to release compilation flags.
Explicitly specified the package name when loading Rcpp modules.

Documentation

Updated package documentation to derive author and maintainer information directly from DESCRIPTION.
Removed redundant author annotations from individual help pages.
Corrected the citation year for the kernel ICA reference.
Fixed several typographical errors in the documentation.

From NEWS.md in the release

Install

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

install.packages("KernelICA", 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-kernelica

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-KernelICA

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-KernelICA

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: 4.9 min · r-devel-windows-x86_64

Status changes

OK13 OKNow
OK7 OK2026-08-05

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.0.0

READMENoVignettesNoNEWSYes · 67% structured · mentions 2.0.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 5includes a package overview page
Examples that run: 100%4 run in a plain check
Exported functions with examples: 100%
Documented parameters: 90%
Return-value docs: 100%
Help pages citing references: 60%

How these are measured

Downloads

769

CRAN downloads in the past year

Rank #16,220 · ~2/day · ~64/mo

Releases R versions

Daily download trend is not available in this view yet.

23330 days

76990 days

7691 year

Compare downloads with other packages →

Also on34 r2u2 autocran

How downloads are counted

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing KernelICA adds 56 packages (30 with compiled code, 49 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, patchwork 3.2 MB.

Depends (2)

R >= 4.2.0Rcpp

Imports (4)

methodsManifoldOptim JADE ICtest

LinkingTo (4)

Rcpp RcppArmadillo ManifoldOptim RcppEigen

Suggests (0)

none

Enhances (0)

none

Dependencies facing archival

CRAN will archive these unless their check problems are fixed by the date shown. This package needs each one to install.

ManifoldOptimfix by Oct 31

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (3)

Klaus Nordhausen

Author, Maintainer since 2.0.0 (2026)

Juho Eagling

Author · added in 2.0.0

Christoph L. Koesner

Author

Previously maintained by Christoph L. Koesner (0.1.0).

Releases (2)

Pick two releases to compare their code metrics.

unarchivedReturned to CRAN
2026-08-04
2.0.0Latest
record
2026-08-04 · current release · diff ↗
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
R
R 4.2.0 released · 2022-04-22
archivedRemoved from CRAN
2022-01-06
check issues were not corrected in time Use of 'assert_rtn'
R
R 4.1.0 released · 2021-05-18
0.1.0
record
2021-03-01
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-03-01
Total releases: 2 / 5 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 4.2.0
Download size: 17 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("KernelICA")

Format

Nordhausen, K., Eagling, J., & Koesner, C. L. (2026). KernelICA: Kernel Independent Component Analysis (Version 2.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.KernelICA

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 KernelICA version 2.0.0 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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