Robust Principal Component Analysis Using the Cauchy Distribution
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- CRAN 30-day downloads, method
- 334−22.5% down on the 30 days before, the worse direction
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A new robust principal component analysis algorithm is implemented that relies upon the Cauchy Distribution. The algorithm is suitable for high dimensional data even if the sample size is less than the number of variables.
Full description
A new robust principal component analysis algorithm is implemented that relies upon the Cauchy Distribution. The algorithm is suitable for high dimensional data even if the sample size is less than the number of variables. The methodology is described in this paper: Fayomi A., Pantazis Y., Tsagris M. and Wood A.T.A. (2024). "Cauchy robust principal component analysis with applications to high-dimensional data sets". Statistics and Computing, 34: 26. <doi:10.1007/s11222-023-10328-x>.
- Maintainer
- Michail Tsagris
- Licence
- GPL (>= 2)
- Latest release
- 15 Jun 2026
- First release
- 9 Nov 2022
More details
- Releases
- 5
- Needs compilation
- No
- Needs R
- >= 4.0
- Date
- 2026-06-15
Subjects (1) Method, SubjectsMethod
Subjects and collections
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- Subjects are marked Site and collections Community. Subjects, collections and task views are never mixed in one list.
- The day of the data
- Subjects and collections were last worked out on 22 Oct 2026.
Cite
Package
Run in R for the authors' preferred citation:
citation("cauchypca")Tsagris, M., Fayomi, A., Pantazis, Y., & Wood, A. T. A. (2026). cauchypca: Robust Principal Component Analysis Using the Cauchy Distribution (Version 1.4) [Computer software]. https://doi.org/10.32614/CRAN.package.cauchypca
About
This package has no citation file, so citation() returns this entry built from DESCRIPTION.
R Observatory
For a number measured here: a download total, a coverage figure, an archival date.
Balamuta, J. J. (2026). R Observatory: Metrics for cauchypca version 1.4 [Data set]. HJJB, LLC. Data release v2026-10-28. https://doi.org/10.5281/zenodo.21843040
About
From data release v2026-10-28, which the citation names so these numbers can be found later.
Health
All 13 check platforms pass.
r-devel-linux-x86_64-debian-clangThe unreleased R on Linux, x86_64, debian-clang
OK
- Version checked
- 1.4
- Time taken
- 29 s
r-devel-linux-x86_64-debian-gccThe unreleased R on Linux, x86_64, debian-gcc
OK
- Version checked
- 1.4
- Time taken
- 24 s
r-devel-linux-x86_64-fedora-clangThe unreleased R on Linux, x86_64, fedora-clang
OK
- Version checked
- 1.4
- Time taken
- 20 s
r-devel-linux-x86_64-fedora-gccThe unreleased R on Linux, x86_64, fedora-gcc
OK
- Version checked
- 1.4
- Time taken
- 20 s
r-devel-windows-x86_64The unreleased R on Windows, x86_64
OK
- Version checked
- 1.4
- Time taken
- 58 s
r-oldrel-macos-arm64The previous release of R on macOS, arm64
OK
- Version checked
- 1.4
- Time taken
- 551 s
r-oldrel-macos-x86_64The previous release of R on macOS, x86_64
OK
- Version checked
- 1.4
- Time taken
- 493 s
r-oldrel-windows-x86_64The previous release of R on Windows, x86_64
OK
- Version checked
- 1.4
- Time taken
- 55 s
r-patched-linux-x86_64The patched release of R on Linux, x86_64
OK
- Version checked
- 1.4
- Time taken
- 26 s
r-release-linux-x86_64The current release of R on Linux, x86_64
OK
- Version checked
- 1.4
- Time taken
- 26 s
r-release-macos-arm64The current release of R on macOS, arm64
OK
- Version checked
- 1.4
- Time taken
- 12 s
r-release-macos-x86_64The current release of R on macOS, x86_64
OK
- Version checked
- 1.4
- Time taken
- 85 s
r-release-windows-x86_64The current release of R on Windows, x86_64
OK
- Version checked
- 1.4
- Time taken
- 52 s
- 13 OK
Over time
No change since 5 Aug 2026
As a list (3)
| Changed | Worst status | OK | Notes | Warnings | Errors |
|---|---|---|---|---|---|
| 5 Aug 2026 | OK | 13 | 0 | 0 | 0 |
| 1 Aug 2026 | Note | 12 | 1 | 0 | 0 |
| 10 Mar 2026 | OK | 14 | 0 | 0 | 0 |
Since March 2026
Downloads
Method, Downloads Method Download figures count requests logged by each distribution channel. They are not counts of installs or of users, because each channel publishes its own totals and this site reads them.Downloads
- Total downloads in the last 30 days
- 342−24.3% down on the 30 days before, the worse directionIt is the sum of 3 channels: CRAN, r2u and autoCRAN.
CRAN rank
11,436 of 26,530
CRAN
334 downloads in the last 30 days
- Rank
- 11,436 of 26,530
- Change
- −22.5% down on the 30 days before, the worse direction
It is in the total. Take it out
r2u
7 downloads in the last 30 days
- Rank
- 7,875 of 30,526
- Change
- −22.2% down on the 30 days before, the worse direction
It is in the total. Take it out
autoCRAN
1 downloads in the last 30 days
- Rank
- 25,688 of 29,212
- Change
- −91.7% down on the 30 days before, the worse direction
It is in the total. Take it out
The total is 342 downloads in the last 30 days. It is the sum of 3 channels: CRAN, r2u and autoCRAN.
Over time
Dependencies
- Needs
- 5
- Dependent packages
- 0
- Suggested by
- 0
Needs (5)
- doParallel
- foreach
- parallel
- Rfast
- stats
- Installing it adds
- 8 packages, 4.4 MB of source
- Of those, need compilation
- 5
Optional extras (1)
Code
Method, Code Method Code metrics come from reading the released source of each package version. The package is never installed, loaded or run.Code metrics
README, vignettes, a NEWS file and the shares read from its help pages. Files kept only in the repository, such as a pkgdown configuration or CI files, are read by the repository scan instead.
- Functions
- 5
- Public exports
- 3
- Lines of R code
- 158
- Median complexity
- 2
Functions (5)
Size and composition
Lines by kind (338)
| Kind | Lines | Share |
|---|---|---|
| R code | 158 | 47% |
| Documentation | 180 | 53% |
Lines by language
| Language | Lines | Share |
|---|---|---|
| Rd | 180 | 53% |
| R | 158 | 47% |
Languages are counted from file extensions.
- Files
- 9
- R functions
- 5
Complexity
- Median
- 2
- Mean
- 3.4
- Highest
- 10
- Median lines per function
- 32
About complexity
Cyclomatic complexity counts the independent paths through a function: 1 is a straight line, higher is harder to test. R functions only.
Call graph figures
- R functions
- 5
- Calls
- 3
- Unconnected
- 1
- Groups
- 1
Growth (5 releases)
Release changes
Tests
The package was built and has no tests to run.
- Lines of tests
- 0
- Exports named in tests
- 0%
Test suite
- Has tests
- No
- Test frameworks
- No tests in this release
- Test lines per line of code
- 0
Documentation
- Exports documented
- 66.7%
- Arguments documented
- 100%
- Return value documented
- 100%
- Help pages with examples
- 66.7%
- Examples run in checks
- 100%
Other documentation
- README
- No
- Release notes file
- No
- Help pages
- 3
- Lines of documentation
- 180
People
Method, People Method People on the site are the names packages give them in their Author and maintainer identity
DESCRIPTION files: authors from the author list, and the maintainer from the Maintainer field. Spellings of one name become one person only where the rules below allow it, and when in doubt the rules keep people apart.
Maintainer since 1.0 (2022), author
Contributor
Contributor
Contributor
Repository
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URL and BugReports fields of its DESCRIPTION file. Read-only mirrors, the cran and bioc accounts on GitHub and git.bioconductor.org, are left out.
No repository on record
History
Method, History Method Archived is built from CRAN's archive records, its list of check deadlines and Bioconductor's package records. Every figure is counted to 28 Oct 2026, the day the data was read.Packages leaving