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 15380] From MLCLSP to MLCLSP with linked lot sizes by Stefan Gemperle
4
by Stefan Gemperle
[AMPL 15388] Choose one variable from several by stevebar258
6
by stevebar258
[AMPL 15337] set by sahebeh.azar
15
by sahebeh.azar
[AMPL 15378] ampl error missing items by saloom ar
13
by saloom ar
[AMPL 15410] Error processing constraint: invalid subscript by lisa.liersch.ll
1
by ptiwari
[AMPL 15400] ERROR with reading BIG Data in AMPL by Eric E Sättar
5
by Robert Fourer-2
[AMPL 15397] finding shortest path from multiple sources to multiple destinations by Danish
1
by Robert Fourer-2
[AMPL 15397] Finding shortest path from multiple nodes to multiple destinations by Danish
0
by Danish
[AMPL 15388] Read sets from text file by gg
1
by ptiwari
[AMPL 15367] Error Reading Params by Ratna S
3
by Ratna S
[AMPL 15387] HOMOSEXUAL OF PEDOPHILE KIND PAOLO BARRAI: BLOG "MERDATO" LIBERO ALIAS "STALKING SHIT SPREADED IN A FREE WAY WITH NAZIST JOSEPH GOEBBELS'S STYLE". STALKING SHIT BASED ON IMMENSE FAKE IN ORDER TO KILL EVERYONE IS NOT HITLERIAN & ANTI SEMITIC LIKE HIM! by ERNESTO PREATONI -MA...
0
by ERNESTO PREATONI -MA...
[AMPL 15386] CHI È IL BASTARDO PEDOFILO PAOLO BARRAI (CRIMINALISSIMA CRYPTOLAB, CRIMINALISSIMA BITINCUBATOR, CRIMINALISSIMA BSI ITALIA SRL VIA SOCRATE 26 MILANO, CRIMINALISSIMO BLOG "MERDATO" LIBERO )? IAMM BELL, IA'! DA SEMPRE PEDERASTA! STATO IN GALERA 3 VOLTE! by ERNESTO PREATONI -MA...
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by ERNESTO PREATONI -MA...
[AMPL 15376] AMPL Timetabling Problems by Integer by saloom ar
1
by ptiwari
[AMPL 15367] if then else AMPL HELP!!!! by Jorge Salvador
1
by ptiwari
[AMPL 15353] Load Avg Load Avg: ( 10.18 , 10.5 , 10.12 ) by Dridi Marwa
3
by Robert Fourer-2
[AMPL 15360] linearize standard deviation by C
1
by ptiwari
[AMPL 15346] if-else , max , min statements in contraintes or objective function by Dridi Marwa
2
by Dridi Marwa
[AMPL 15355] Quantity variables by jose castillo
1
by Robert Fourer-2
[AMPL 13322] multi obj.optimization. by maya-21
7
by Robert Fourer-2
[AMPL 15334] solving problem without satisfying constraint by mahraz amini
2
by mahraz amini
[AMPL 15342] Qusetion to a programming problem by Larissa Mioc
1
by ptiwari
[AMPL 15338] About time by zuoxiaorong710
1
by ptiwari
[AMPL 15338] Vehicle routing problem by nourhanghanem93
1
by ptiwari
[AMPL 15341] two (same) constraint formulations yield different computations times - why? by ops
1
by Robert Fourer-2
[AMPL 15337] 2 inequalities in 1 constraint by Lauren Buyck
1
by Robert Fourer-2
[AMPL 15338] Bailing out after 10 warnings. by jose castillo
1
by Robert Fourer-2
[AMPL 15329] AMPL api for java by giuseppe.mastroeni12...
4
by giuseppe.mastroeni12...
[AMPL 15323] Invalid number in NLP function or derivative detected by Dridi Marwa
2
by Dridi Marwa
[AMPL 14458] Constraint Subscript Error by Suthar,Ratna G
3
by ptiwari
[AMPL 15273] minimum value!!! by sahebeh.azar
3
by ptiwari
[AMPL 15319] AMPL Running in command prompt issue: Cannot open file by a.tantillo845
1
by Robert Fourer-2
[AMPL 15314] How to Express a Constraint where 3 variables belongs to the same set but are not equal to each othe by yhcai
3
by Robert Fourer-2
[AMPL 15304] AMPL - CPLEX needs quadratic constraint for dual prices to be correct, AMPL - Gurobi doesn't. Why? by sels.peter
1
by Robert Fourer-2
[AMPL 15325] University of Florida AMPL users? by Ratna S
0
by Ratna S
[AMPL 15234] Reading large data-set from Excel to AMPL by Azadeh Mobtaker
6
by Azadeh Mobtaker
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