Model Validation Levels R package MVLs version 2.1 Calculates Model Validation Levels from user provided model data, referent data, and scope files as described by Stafford, Provost, & Jones (2025) <doi:10.1080/17477778.2025.2536096>. Data files must be structured according to one of the accepted Excel templates as shown by Jones, Provost, Stafford, & Young (2026) <https://www.afit.edu/docs/MVL%20User%20Guide%20v4.pdf>. Software Imports: dplyr, DT, geometry, htmlwidgets, lhs, magrittr, openxlsx, purrr, RANN, readxl, shiny, shinyWidgets, stats, tibble, tidyselect, markdown, utils Suggests: spelling Corinne Stafford <corinne.stafford.ctr@us.af.mil> Comprehensive R Archive Network (CRAN) Kyle Provost [aut], Corinne Stafford [aut, cre], Ronald Prescott [ctb], Chloe Young [ctb], Nicholas Jones [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=MVLs/LICENSE) 2026-07-27 application/tgz https://CRAN.R-project.org/package=MVLs doi:10.32614/CRAN.package.MVLs en-US