| Type: | Package |
| Title: | 'ROI' Optimization Problems Based on 'NETLIB-LP' |
| Version: | 1.1-2 |
| Description: | A collection of 'ROI' optimization problems based on the 'NETLIB-LP' collection. 'Netlib' is a software repository, which amongst many other software for scientific computing contains a collection of linear programming problems. The purpose of this package is to make this problems easily accessible from 'R' as 'ROI' optimization problems. |
| Depends: | R (≥ 3.5.0) |
| Imports: | ROI (≥ 1.0-0) |
| Suggests: | Rglpk (≥ 0.6-2) |
| License: | GPL-3 |
| RoxygenNote: | 7.2.3 |
| NeedsCompilation: | no |
| Packaged: | 2023-04-17 20:15:53 UTC; f |
| Author: | Florian Schwendinger [aut, cre] |
| Maintainer: | Florian Schwendinger <FlorianSchwendinger@gmx.at> |
| Repository: | CRAN |
| Date/Publication: | 2023-04-17 21:00:02 UTC |
Obtain Netlib Linear Problems
Description
If x is missing a character vector giving the names of all available problems is
returned. If x is "all" a list containing all the optimization problems
is returned. If x is the name of an optimization problem, the given optimization
problem is returned. If x is "metainfo" a data.frame containing all the
meta info is returned.
Usage
netlib(x=c("all", "metainfo", "adlittle", "afiro", "agg", "agg2",
"agg3", "bandm", "beaconfd", "blend", "bnl1", "bnl2",
"boeing1", "boeing2", "bore3d", "brandy", "capri", "cycle",
"czprob", "d2q06c", "d6cube", "degen2", "degen3", "dfl001",
"e226", "etamacro", "fffff800", "finnis", "fit1d", "fit1p",
"fit2d", "fit2p", "forplan", "ganges", "gfrd.pnc", "greenbea",
"greenbeb", "grow15", "grow22", "grow7", "israel", "kb2",
"lotfi", "maros.r7", "maros", "modszk1", "nesm", "perold",
"pilot.ja", "pilot", "pilot.we", "pilot4", "pilot87",
"pilotnov", "recipe", "sc105", "sc205", "sc50a", "sc50b",
"scagr25", "scagr7", "scfxm1", "scfxm2", "scfxm3", "scorpion",
"scrs8", "scsd1", "scsd6", "scsd8", "sctap1", "sctap2", "sctap3",
"seba", "share1b", "share2b", "shell", "ship04l", "ship04s", "ship08l",
"ship08s", "ship12l", "ship12s", "sierra", "stair",
"standata", "standmps", "stocfor1", "stocfor2", "stocfor3",
"truss", "tuff", "vtp.base", "wood1p", "woodw","x25fv47", "x80bau3b"))
Arguments
x |
a character giving the name of the optimization problem to be returned. |
Details
Netlib is a software repository, which amongst many other software for
scientific computing contains a collection of linear programming
problems. The column optimal\_value contains the
results published in Koch (2004).
References
[NETLIB-LP] Koch, Thorsten (2004)
The final NETLIB-LP results.
Operations Research Letters
https://opus4.kobv.de/opus4-zib/files/727/ZR-03-05.pdf
Examples
## Not run:
library(ROI)
library(ROI.models.netlib)
## list all available problems
netlib()
## get all problems as a list
ntlb <- netlib("all")
## get a certain problem by name
netlib("afiro")
ntlb[["afiro"]]
## get the meta info to the problems
netlib("metainfo")
## solve a problem
sol <- ROI_solve(netlib("afiro"))
sol
sol$objval - as.numeric(netlib("metainfo")["afiro", "final_results"])
## End(Not run)