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 (5430)
Replies Last Post Views
[AMPL 15513] Stochastic AMPL by Арсений Гринченко
3
by ptiwari
[AMPL 15444] BINARY VARIABLE SHOWING ONY VALE ZEROS by khan
13
by ptiwari
[AMPL 15525] CPLEX OUTPUT WITH MINIMIZING IS ALWAYS '0' MATLAB API by khan
0
by khan
[AMPL 15515] ampl api python , the proper way to index the element of parameter in the data file when it contains more than one dimension by rupu.yang
4
by rupu.yang
[AMPL 15515] AMPL API Python, the right way to index the element of parameter when it contains more than one dimension by rupu.yang
0
by rupu.yang
[AMPL 15515] The right way to index the element of parameter in data file when it contains more than one dimension by rupu.yang
0
by rupu.yang
[AMPL 15515] ampl api in python (the right write index when trying to modify data file through amplpy in python) by rupu.yang
0
by rupu.yang
[AMPL 15368] "Numeric error" message when using a Taylor series iteration method by gpbrent
3
by ptiwari
[AMPL 15511] GENIO BORSISTICO ED EROE CIVILE MICHELE NISTA VITTIMA DEI NAZI-ST-ALKERS ASSASSINI PAOLO BARRAI, PAOLO CARDENÁ, GIULIANO FERRARA, CLAUDIO CERASA, DANIELE MINOTTI! COMANDATI E CORROTTI DAI MANDANTI DI OMICIDI E STRAGI: ENNIO DORIS E SILVIO BERLUSCONI! by MICHELE NISTA - UN E...
0
by MICHELE NISTA - UN E...
[AMPL 15473] Feeding initial solution to a variable in AMPL by Sovan Mukherjee
3
by ptiwari
[AMPL 15486] if-else if by sahebeh.azar
3
by ptiwari
[AMPL 15499] evaluate log(0) by Dridi Marwa
3
by ptiwari
[AMPL 15486] Load dll file in AMPL by Alan Delgado de Oliv...
5
by ptiwari
[AMPL 5424] Problem with Solver (CPLEX vs Minos & FortMP) by Sammy Anglelesco
8
by mou
[AMPL 15505] PEDOFILO INCULA BAMBINI PAOLO BARRAI ("BITCOIN".. CON CUI LAVA SOLDI MAFIOSI + I 48 MLN RUBATI DA LEGA LADRONA + SOLDI CRIMINALI DI SPAPPOLA MAGISTRATI E PARI PEDOFILO SILVIO BERLUSCONI)! DA SEMPRE NAZISTA, ASSASSINO E PEDERASTA! STATO IN GALERA 3... by DAVIDE BALDI - OSM N...
0
by DAVIDE BALDI - OSM N...
[AMPL 5829] QP Hessian is not positive semi-definite. by roya azimi
4
by khan
[AMPL 15490] AMPL objective function by Diego André Sáenz Pe...
1
by ptiwari
[AMPL 15483] Help on simple problem by minio333222111
1
by ptiwari
[AMPL 15475] No idea why this isn't working by nyeb287
4
by ptiwari
[AMPL 15473] Adding a store open year constraint by Nausheen
1
by ptiwari
[AMPL 15472] Indexing of a 2D parameter in AMPL by Sovan Mukherjee
2
by Sovan Mukherjee
[AMPL 15475] Need urgent help on this! by nyeb287
1
by nyeb287
[AMPL 15443] Problems closing integrality GAP by Javier Maturana Ross
4
by Javier Maturana Ross
[AMPL 15465] Variable in bounds of range set by minhtuanthaivn
3
by minhtuanthaivn
[AMPL 15459] Generating a selected route matrix (or set) based on distance / Shortest path by Nausheen
4
by Nausheen
[AMPL 15457] Fw: RE: AMPL Contact Form Message by antonyk
1
by Filipe Brandão
[AMPL 15449] error simplifying nonlinear expressions by Dridi Marwa
2
by Dridi Marwa
[AMPL 15445] CAN AMPL API MATLAB TAKE DATA FROM MATRIX DEFINED IN MATLAB? by khan
2
by khan
[AMPL 15445] Approximation of discrete cumulative distribution function by capo-93
2
by ptiwari
[AMPL 15428] multi-objective model with knitro by santi ayabaca
4
by santi ayabaca
[AMPL 15440] Numeric problem when using Taylor series linearisation for non-linear constraints by gpbrent
2
by gpbrent
[AMPL 15426] Request for help solving a real-life problem. by Juan Camilo Rincon
3
by Robert Fourer-2
RE: [AMPL 15434] Re: From MLCLSP to MLCLSP with linked lot sizes by Robert Fourer-2
0
by Robert Fourer-2
[AMPL 15429] How to use constrained programming option of cplex in AMPL. by Danish
2
by Danish
[AMPL 15426] Is this a feasible problem to model by Danish
1
by Danish
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