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 (6373)
Replies Last Post Views
[AMPL 19059] When does overflow in MINOS occur? by say3 SK
0
by say3 SK
[AMPL 18962] presolve settings in knitro by SS
4
by SS
[AMPL 19057] QUESTION, i do not understand my mistake, please help by Rafael Bernardo Carm...
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by Rafael Bernardo Carm...
[AMPL 19055] Error reading table with table handler tab by Hossi
1
by AMPL mailing list
[AMPL 19010] AMPLide - CurrentDirectory empty! by Peter Greistorfer
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by Peter Greistorfer
[AMPL 19045] I do not understand this error message by Rafael Carmona
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by Rafael Carmona
[AMPL 1079] Set of sets in AMPL? by Carl He
3
by AMPL mailing list
[AMPL 668] Use of lazy suffix by pratimusc
10
by AMPL mailing list
[AMPL 19036] Unable to get feasible solution by Arjun M
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by AMPL mailing list
[AMPL 19042] QUESTION ABOUT SINTAXIS by Rafael Bernardo Carm...
1
by Rafael Carmona
[AMPL 19030] "No variables declared" error. by salvajohan
1
by AMPL mailing list
[AMPL 19029] AMPL Memory Management by elaadani
1
by AMPL mailing list
[AMPL 19035] [amplpy 0.6.7] Is there a difference between using setValues() and fromDict() to load dataframe from dict? by say3 SK
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by AMPL mailing list
[AMPL 19028] How to write in a constraint for all i in J, j in J, except i=j? by Martiniano Vidal
1
by AMPL mailing list
[AMPL 19027] Solution infeasible in VRP by Arjun M
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by AMPL mailing list
[AMPL 19018] Omit "invalid subscripts discarted error " by elaadani
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by elaadani
[AMPL 19024] regarding the coding of my vehicle routing problem by Arjun M
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by AMPL mailing list
[AMPL 19024] regarding the coding of my vehicle routing problem by Arjun M
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by Arjun M
[AMPL 19024] regarding the coding of my vehicle routing problem by Arjun M
0
by Arjun M
[AMPL 18901] Interprétation des résultats sous couenne by moimeme diaby
17
by AMPL mailing list
[AMPL 19002] Pouvez-vous m'aider à résoudre ce problème by sarra aloui
3
by AMPL mailing list
[AMPL 19011] Is this mean Knitro obtain the optimal solution or not? by Harprinder
1
by AMPL mailing list
[AMPL 19008] How to add if condition for a variable in a set? by Harprinder
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by AMPL mailing list
[AMPL 19006] AMPL sets all variables to zero eventhough I have specified lower limits by X5599
1
by AMPL mailing list
[AMPL 19001] What do I intrepret from this resut about the problem? Is MINOS able to solve the problem? shall I change some options? by Harprinder
4
by AMPL mailing list
[AMPL 18997] AMLP Implementation of Minimum Maximum Link Utilisation by Richard
1
by AMPL mailing list
[AMPL 18993] How to write a constraint and define a sets by jhonc12
1
by AMPL mailing list
[AMPL 18991] Export the value of the variables from AMPL to a vector in c++ by Daniel Morillo Torre...
3
by AMPL mailing list
[AMPL 18989] Gurobi error 10030 by Kristy Naylor
1
by AMPL mailing list
[AMPL 18926] Troubles writing constraints using absolute value and logical expressions by Joaquin Ulloa Leiva
4
by Joaquin Ulloa Leiva
[AMPL 18984] Check baron status by Alba Victoria
1
by AMPL mailing list
[AMPL 18975] AMPL Objective Function Representation by Richard
1
by AMPL mailing list
[AMPL 18946] needed help for AMPL solver by bennama habib
11
by AMPL mailing list
[AMPL 18972] Utilizing multiple threads with AMPL + baron by Sabol, Jonathan A (3...
1
by AMPL mailing list
[AMPL 18965] how I can initialize a parameter in ampl when it is defined on a multi-dimensio sets? by Naghmeh Shahverdi
1
by AMPL mailing list
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