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optimflex: Derivative-Based Optimization with User-Defined Convergence Criteria

Provides a derivative-based optimization framework that allows users to combine eight convergence criteria. Unlike standard optimization functions, this package includes a built-in mechanism to verify the positive definiteness of the Hessian matrix at the point of convergence. This additional check helps prevent the solver from falsely identifying non-optimal solutions, such as saddle points, as valid minima.

Version: 0.1.0
Imports: numDeriv, utils
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-02-07
DOI: 10.32614/CRAN.package.optimflex
Author: Eunseong Cho [aut, cre]
Maintainer: Eunseong Cho <bene at kw.ac.kr>
License: MIT + file LICENSE
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: optimflex results [issues need fixing before 2026-02-21]

Documentation:

Reference manual: optimflex.html , optimflex.pdf
Vignettes: Introduction to optimflex (source, R code)

Downloads:

Package source: optimflex_0.1.0.tar.gz
Windows binaries: r-devel: optimflex_0.1.0.zip, r-release: optimflex_0.1.0.zip, r-oldrel: optimflex_0.1.0.zip
macOS binaries: r-release (arm64): optimflex_0.1.0.tgz, r-oldrel (arm64): not available, r-release (x86_64): optimflex_0.1.0.tgz, r-oldrel (x86_64): optimflex_0.1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=optimflex to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.