Variable Neighborhood Trust Region Search R package vntrs version 0.2.1 Implements the variable neighborhood trust region search (VNTRS) algorithm for nonlinear global optimization, following Bierlaire et al. (2009) "A Heuristic for Nonlinear Global Optimization" <doi:10.1287/ijoc.1090.0343>. The method combines neighborhood exploration with a trust-region framework to search the solution space efficiently. It can terminate a local search early when the iterates converge toward a previously visited local optimum or when further improvement within the current region is unlikely. The algorithm can also be used to identify multiple local optima. Software Imports: checkmate, oeli (>= 0.7.5), Rcpp LinkingTo: Rcpp, RcppArmadillo Suggests: testthat (>= 3.0.0) Lennart Oelschläger <oelschlaeger.lennart@gmail.com> Comprehensive R Archive Network (CRAN) Lennart Oelschläger [aut, cre] (ORCID: <https://orcid.org/0000-0001-5421-9313>) GPL-3 2026-05-07 application/tgz https://CRAN.R-project.org/package=vntrs doi:10.32614/CRAN.package.vntrs