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Identifying important factors from a large number of potentially important factors in a highly nonlinear and computationally expensive black-box model is a difficult problem. Xiao, Joseph, and Ray (2022) <doi:10.1080/00401706.2022.2141897> proposed Maximum One-Factor-at-a-Time (MOFAT) designs for this purpose. A MOFAT design is a collection of one-factor-at-a-time (OFAT) designs constructed to achieve maximal screening capability. Song and Joseph (2026) <doi:10.48550/arXiv.2609.02087> extended the MOFAT framework to incorporate nominal and discrete numeric factors. The resulting designs are implemented in the mofatQQ function. Yu and Joseph (2026) <doi:10.48550/arXiv.2606.02533> proposed Space-Filling One-Factor-at-a-Time (SOFT) designs, which achieve optimal space-filling properties while retaining the screening capability. Therefore, SOFT designs are useful for both factor screening and surrogate modeling. The work on MOFAT is supported by a U.S. National Science Foundation (NSF) grant CMMI-1921646 <https://www.nsf.gov/awardsearch/show-award/?AWD_ID=1921646>, and the work on MOFATQQ and SOFT is supported by a U.S. NSF grant DMS-2310637.
| Version: | 2.0 |
| Imports: | gtools, Rcpp, SFDesign, scales, SLHD, spacefillr, stats, MaxPro, RcppHungarian, withr |
| LinkingTo: | Rcpp, RcppArmadillo |
| Suggests: | testthat (≥ 3.0.0) |
| Published: | 2026-10-26 |
| DOI: | 10.32614/CRAN.package.MOFAT |
| Author: | Difan Song [aut, cre], Wei-Yang Yu [aut], Qian Xiao [aut], V. Roshan Joseph [aut] |
| Maintainer: | Difan Song <dfsong96 at gmail.com> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: | yes |
| SystemRequirements: | On Linux, optional NVIDIA CUDA Toolkit (12.x or 13.x) and a supported host compiler; Metal is optional on macOS |
| CRAN checks: | MOFAT results |
| Reference manual: | MOFAT.html , MOFAT.pdf |
| Package source: | MOFAT_2.0.tar.gz |
| Windows binaries: | r-devel: MOFAT_2.0.zip, r-release: MOFAT_2.0.zip, r-oldrel: MOFAT_2.0.zip |
| macOS binaries: | r-release (arm64): MOFAT_2.0.tgz, r-oldrel (arm64): MOFAT_2.0.tgz, r-release (x86_64): MOFAT_2.0.tgz, r-oldrel (x86_64): MOFAT_2.0.tgz |
| Old sources: | MOFAT archive |
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