GALAHAD: Geometry-Adaptive Lyapunov-Assured Hybrid Optimizer

Implements the GALAHAD algorithm (Geometry-Adaptive 'Lyapunov'-Assured Hybrid Optimizer), combining 'Riemannian' metrics, 'Lyapunov' stability checks, and trust-region methods for stable optimization of mixed-geometry parameters. Designed for biological modeling (germination, dose-response, survival) where rates, concentrations, and unconstrained variables coexist. Developed at the Minnesota Center for Prion Research and Outreach (MNPRO), University of Minnesota. Based on Conn et al. (2000) <doi:10.1137/1.9780898719857>, Amari (1998) <doi:10.1162/089976698300017746>, Beck & Teboulle (2003) <doi:10.1016/S0167-6377(02)00231-6>, Nesterov (2017) <https://www.jstor.org/stable/resrep30722>, and Walne et al. (2020) <doi:10.1002/agg2.20098>.

Version:	1.0.0
Depends:	R (≥ 4.2.0)
Imports:	stats
Suggests:	testthat (≥ 3.0.0)
Published:	2025-11-07
DOI:	10.32614/CRAN.package.GALAHAD
Author:	Richard A. Feiss [aut, cre]
Maintainer:	Richard A. Feiss <feiss026 at umn.edu>
License:	MIT + file LICENSE
NeedsCompilation:	no
Citation:	GALAHAD citation info
Materials:	README, NEWS
CRAN checks:	GALAHAD results

Documentation:

Reference manual:

GALAHAD.html , GALAHAD.pdf

Downloads:

Package source:	GALAHAD_1.0.0.tar.gz
Windows binaries:	r-devel: GALAHAD_1.0.0.zip, r-release: GALAHAD_1.0.0.zip, r-oldrel: GALAHAD_1.0.0.zip
macOS binaries:	r-release (arm64): GALAHAD_1.0.0.tgz, r-oldrel (arm64): GALAHAD_1.0.0.tgz, r-release (x86_64): GALAHAD_1.0.0.tgz, r-oldrel (x86_64): GALAHAD_1.0.0.tgz

Linking:

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