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 (6458)
Replies Last Post Views
[AMPL 18920] AMPL : .val bug ? by Sebastien Francois
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by AMPL mailing list
[AMPL 18917] licence issue by mohammad Majd
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by AMPL mailing list
[AMPL 18917] This appears when i run the program cplex [-i] [-f <commandfile> | -c "<command1>" "<command2>" ...] by filloycarlaa
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by filloycarlaa
[AMPL 18919] Trouble with absolute value and logical constraints by Joaquin Ulloa Leiva
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by Joaquin Ulloa Leiva
[AMPL 18899] OR in AMPL by Juan Martinez
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by Juan Martinez
[AMPL 18912] linearization of equality constraint including maximization function of the form variable2[i] = max(variable1[x,y,z]*parameter1[x]) by André
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by André
[AMPL 18908] Re: AMPL Process Termination Error by Richard
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by AMPL mailing list
[AMPL 18898] Problem with Let-command and for-loop! by Bruce Wayne
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by AMPL mailing list
[AMPL 18901] Exit code 2 by Md Saiful Islam
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by AMPL mailing list
[AMPL 18891] Can I run AMPL models on IBM cplex studio ? by omerkhater5
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by AMPL mailing list
[AMPL 18887] IMPORT DATA FROM EXCEL by Rafael Bernardo Carm...
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by AMPL mailing list
[AMPL 18884] Many data sets by Tiago Tiburcio
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by AMPL mailing list
[AMPL 18856] error using Knitro by SS
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by AMPL mailing list
[AMPL 18873] upper bound error by Anoop K P
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by AMPL mailing list
[AMPL 18874] Help - Support Request by Riccardo Cambini
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by AMPL mailing list
[AMPL 18887] IMPORT DATA FROM EXCEL by Rafael Bernardo Carm...
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by Rafael Bernardo Carm...
[AMPL 17162] Variable based condition in a constraint - is there a workaround? by lothar.loewer
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by AMPL mailing list
[AMPL 18876] problema with ampl by paula sanchez de los...
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by AMPL mailing list
[AMPL 18824] Besoin d'aide pour le problème suivant: by moimeme diaby
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by moimeme diaby
[AMPL 18867] HELP WITH FLOAT VARIABLE by Cinthya Velásquez
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by AMPL mailing list
[AMPL 18866] lagrangian relaxation with gurobi solver by roranska
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[AMPL 18861] How we can make thousands of set in ampl? by sherek Shargh
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by AMPL mailing list
[AMPL 18860] Help with AMPL by Apple Secada
1
by AMPL mailing list
[AMPL 18786] Different AMPL results using different computers by Hero One
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by AMPL mailing list
[AMPL 18852] Commande Ampl by moimeme diaby
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by AMPL mailing list
[AMPL 18450] Baron exitcode 18446744072635809797 by Alba Victoria
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by Alba Victoria
[AMPL 18475] Demande d'aide pour résoudre mon problème by Sekou Diaby
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by moimeme diaby
[AMPL 18821] Starting MILP with an initial solution by hurbutun
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by hurbutun
[AMPL 18843] Finding the Feasible Region by Vivek Patle
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by AMPL mailing list
[AMPL 18840] Stochastic programming problem by elaadani
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by AMPL mailing list
[AMPL 18799] if else statement and objective function by SS
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[AMPL 18820] Problem relating let and fix using several problem definitions by lothar.loewer
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by lothar.loewer
[AMPL 18832] Best Practices for saving a large matrix (thousands by tens of thousands of cells)? by Matthew Hall
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by Matthew Hall
[AMPL 18825] Linearization of a non-linear function by Nazanin Rad
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by Nazanin Rad
[AMPL 18792] AMPL IDE logging by Víctor Mario Noble R...
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by AMPL mailing list
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