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 19368] Solving time by Rodrigo Torres
0
by Rodrigo Torres
[AMPL 19367] Transshipment problem in data and model by Aite99
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by Aite99
[AMPL 19361] CPLEX Canonical Matrices by Abdulrahman Aldeek
1
by AMPL mailing list
[AMPL 19338] How to write a restricction? by jhonc12
3
by AMPL mailing list
[AMPL 19356] AMPL using IBM Cloud DropSolver by RenanEduardo
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by AMPL mailing list
[AMPL 19364] QUESTION ABOUT CODE by Rafael Bernardo Carm...
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by Rafael Bernardo Carm...
[AMPL 19355] exit value 18446744072635809915 by astghikhakobyan
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by AMPL mailing list
[AMPL 19343] Can I make a set with repeated elements work? by unnoriginal name
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by unnoriginal name
[AMPL 19263] Help! Offset syntax error and why ? by Dale Petrovski
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by Dale Petrovski
[AMPL 2042] Error at _cmdno 28 executing "solve" command by paterijk
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by AMPL mailing list
[AMPL 19346] Error evaluating constraint 211: can't evaluate sqrt'(0). by astghikhakobyan
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by AMPL mailing list
[AMPL 19342] Reading data from a matlab file by unnoriginal name
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by unnoriginal name
[AMPL 19326] Problem with APOPT by hemantsmn
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by AMPL mailing list
[AMPL 19332] My model takes too long to solve by Mario-91
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by AMPL mailing list
[AMPL 19334] would you help me running this model by Sun Fei
1
by AMPL mailing list
[AMPL 19330] AMPL file cannot be found (in same directory) by peri.sai203
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by AMPL mailing list
[AMPL 19330] NEOS Solver(Error at _cmdno 28 executing "solve" command (file amplin, line 141, offset 2763): Bug: Problem too large (hcl = 61 in new_mblk)) by Hedieh_Ashrafi
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by AMPL mailing list
[AMPL 19325] Can I check the time that it takes to do a task? by unnoriginal name
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by unnoriginal name
[AMPL 19326] cannot find cplex by alex.j.eggers
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by AMPL mailing list
[AMPL 19321] Conditional indexing question by Matthew Saltzman
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by Matthew Saltzman
[AMPL 19166] How to run Parampl ? ampl in parallel by Jeff Chávez
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by Artur Olszak
[AMPL 8711] can't compute 0/0 by yangchenglt1005
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by AMPL mailing list
[AMPL 19313] Time Minimization in Vehicle Routing (VRP) by Giu
1
by AMPL mailing list
[AMPL 19313] help.. strange error by alex123
1
by AMPL mailing list
[AMPL 19312] AMPL License for education by Dr. Adel Elomri
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by AMPL mailing list
[AMPL 19311] help by sarra aloui
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by sarra aloui
[AMPL 19304] strange error by mihajlo
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by mihajlo
[AMPL 19303] specific sum by mihajlo
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by AMPL mailing list
[AMPL 19293] Modelling Symmetry-Breaking Constraints : lexicographic ordering by Ana Celeste Batista ...
4
by AMPL mailing list
[AMPL 19295] Help on an error by DE-BAZELAIRE-DE-LESS...
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by AMPL mailing list
[AMPL 19285] can you help me please by sarra aloui
3
by AMPL mailing list
[AMPL 19252] About my model by Sun Fei
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by AMPL mailing list
[AMPL 19278] How to define the relmipgap for each iteration by Ana Celeste Batista ...
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by Ana Celeste Batista ...
[AMPL 19268] Difficult constraints to code by cajimen0
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by AMPL mailing list
[AMPL 19283] Install Issues by Samantha Brown
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by AMPL mailing list
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