AMPL

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A discussion and help group for AMPL, an algebraic modeling language for optimization problems of many kinds.  AMPL lets people use common notation and familiar concepts to formulate models and examine solutions, while the computer manages communication with appropriate solvers.
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Topics (5720)
Replies Last Post Views
[AMPL 1282] Conditional constraints by xalata
3
by Puschmann, Heinrich ...
[AMPL 1278] making a problem current within a loop by Puschmann, Heinrich ...
1
by Puschmann, Heinrich ...
[AMPL 1263] Some sort of #DEFINE or macro for AMPL? by Joseph-56
2
by Joseph-56
Assigning integrality by Phil.Kleff
2
by Phil.Kleff
[AMPL 1258] Re: How to generate .lp file? by Willian Rolando Algu...
2
by arm-2
[AMPL 1272] For example, you can create a content type for a customer presentation document with a unique set of columns, an event handler, and its own document template. by Norris Montagu-2
0
by Norris Montagu-2
[AMPL 1266] named problem management by Puschmann, Heinrich ...
3
by heinrich-5
[AMPL 1270] It doesn't bother trying to solve this incredibly difficult problem. by mhmod laonardi
0
by mhmod laonardi
[AMPL 1262] File format conversion by ankit-3
1
by Robert Fourer-2
[AMPL 1261] definition of named environs by Puschmann, Heinrich ...
0
by Puschmann, Heinrich ...
[AMPL 1221] conditional constraints by ankit-3
1
by Robert Fourer-2
How to generate .lp file? by arm
6
by Hans Mittelmann
[AMPL 1246] Can't find file "example_data.txt" error by turcanuzergy
2
by turcanuzergy
[AMPL 1247] Help me, No problem exists. by Martin Grados Marqui...
1
by Robert Fourer-2
[AMPL 1244] infeasible error by ankit-3
1
by Hans Mittelmann
[AMPL 1230] how can I use "halt_on_ampl_error yes" by huangr76
9
by A. Ismael F. Vaz
[AMPL 1229] reading resources by ankit-3
2
by Hans Mittelmann
[AMPL 1237] UNICOM, Video Conferencing in Pakistan by Koom2020
0
by Koom2020
[AMPL 1232] Details about cuts by bobwd1955
0
by bobwd1955
[AMPL 1224] Matrix conversion with sign function? by google-21
2
by google-21
[AMPL 1222] debugging a solver by paul.schrimpf
1
by charles.martel@gmx.n...
[AMPL 1225] [Q] General network flow question by ted.poe
0
by ted.poe
[AMPL 1203] How to define a variable set by Eric-105
1
by Robert Fourer-2
error with a 4 dimensions param in display command by crisms
1
by Robert Fourer-2
[AMPL 1202] Regarding database access. by gtaljan@gmail.com
1
by Robert Fourer-2
[AMPL 1200] The built-in function "normal(m,v)" by charles.martel@gmx.n...
1
by Robert Fourer-2
[AMPL 1210] Feature Request, Solution Time of Problems Run Outside Ampl by Steven Harrod
3
by Steven Harrod
[AMPL 1212] Heurfreq directive by Steven Harrod
0
by Steven Harrod
[AMPL 1207] Re: Adding contraints in a loop by Adela Pagès Bernaus
1
by Rodrigo López-Negret...
[AMPL 1204] Adding contraints in a loop by Rodrigo Lopez-Negret...
2
by Rodrigo Lopez-Negret...
[AMPL 1201] Regarding database access. by gtaljan@gmail.com
0
by gtaljan@gmail.com
[AMPL 1194] simple question... does AMPL have access to the system clock? by charles.martel@gmx.n...
2
by charles.martel@gmx.n...
[AMPL 1198] - Very important: Repent, Completely trust in God only and, Love Him with all of your heart. Evolutionism is wrong. by Secret-3
0
by Secret-3
[AMPL 1197] Fwd: QUESTION by Anne Shoemaker
0
by Anne Shoemaker
[AMPL 1193] Memory in writing and solving a problem by ziming guan
1
by Robert Fourer-2
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