MixFrac: Fractional Factorial Designs with Alias and Trend-Free Analysis

Constructs mixed-level and regular fractional factorial designs using coordinate-exchange optimization and automatic generator search. Design quality is evaluated with J2 and balance (H-hat) criteria, alias structures are computed via correlation-based chaining, and deterministic trend-free run orders can be produced following Coster (1993) <doi:10.1214/aos/1176349410>. Mixed-level design construction follows the NONBPA approach of Pantoja-Pacheco et al. (2021) <doi:10.3390/math9131455>. Regular fraction identification follows Guo, Simpson and Pignatiello (2007) <doi:10.1080/00224065.2007.11917691>. Alias structure computation follows Rios-Lira et al.(2021) <doi:10.3390/math9233053>.

Version:	1.0
Imports:	stats, utils
Suggests:	knitr, rmarkdown, testthat (≥ 3.0.0)
Published:	2025-12-12
DOI:	10.32614/CRAN.package.MixFrac (may not be active yet)
Author:	Sukanta Dash [aut, cre]
Maintainer:	Sukanta Dash <sukanta.iasri at gmail.com>
License:	GPL-3
NeedsCompilation:	no
Materials:	README
CRAN checks:	MixFrac results

Documentation:

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

Downloads:

Package source:	MixFrac_1.0.tar.gz
Windows binaries:	r-devel: not available, r-release: MixFrac_1.0.zip, r-oldrel: not available
macOS binaries:	r-release (arm64): MixFrac_1.0.tgz, r-oldrel (arm64): MixFrac_1.0.tgz, r-release (x86_64): MixFrac_1.0.tgz, r-oldrel (x86_64): MixFrac_1.0.tgz

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