A wrapper built around the libLBFGS optimization library by Naoaki Okazaki. The lbfgs package implements both the Limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS) and the Orthant-Wise Quasi-Newton Limited-Memory (OWL-QN) optimization algorithms. The L-BFGS algorithm solves the problem of minimizing an objective, given its gradient, by iteratively computing approximations of the inverse Hessian matrix. The OWL-QN algorithm finds the optimum of an objective plus the L1-norm of the problem's parameters. The package offers a fast and memory-efficient implementation of these optimization routines, which is particularly suited for high-dimensional problems.
| Version: | 1.2.1.2 | 
| Imports: | Rcpp (≥ 0.11.2), methods | 
| LinkingTo: | Rcpp | 
| Published: | 2022-06-23 | 
| DOI: | 10.32614/CRAN.package.lbfgs | 
| Author: | Antonio Coppola [aut, cre, cph], Brandon Stewart [aut, cph], Naoaki Okazaki [aut, cph], David Ardia [ctb, cph], Dirk Eddelbuettel [ctb, cph], Katharine Mullen [ctb, cph], Jorge Nocedal [ctb, cph] | 
| Maintainer: | Antonio Coppola <acoppola at stanford.edu> | 
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] | 
| NeedsCompilation: | yes | 
| In views: | Optimization | 
| CRAN checks: | lbfgs results | 
| Reference manual: | lbfgs.html , lbfgs.pdf | 
| Vignettes: | An R Package for Limited-memory BFGS Optimization (source) | 
| Package source: | lbfgs_1.2.1.2.tar.gz | 
| Windows binaries: | r-devel: lbfgs_1.2.1.2.zip, r-release: lbfgs_1.2.1.2.zip, r-oldrel: lbfgs_1.2.1.2.zip | 
| macOS binaries: | r-release (arm64): lbfgs_1.2.1.2.tgz, r-oldrel (arm64): lbfgs_1.2.1.2.tgz, r-release (x86_64): lbfgs_1.2.1.2.tgz, r-oldrel (x86_64): lbfgs_1.2.1.2.tgz | 
| Old sources: | lbfgs archive | 
| Reverse depends: | hierSDR | 
| Reverse imports: | bandle, Dire, FactorHet, GauPro, GCEstim, splitfngr, xtune | 
| Reverse suggests: | optimx, PlackettLuce, psqn, regsem, ROI.plugin.optimx | 
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