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 (5881)
Replies Last Post Views
[AMPL 15400] ERROR with reading BIG Data in AMPL by Eric E Sättar
27
by AMPL mailing list
[AMPL 16623] Scheduling model execution in the future (with a batch file or ?) by Ellen-22
10
by AMPL mailing list
[AMPL 16822] Sum Binary Variables - Constrained to an Algebric Value - Not Working - Changing Transmission Grid Topology by Limitating Total Lines ON - IEE 118 bus by Marcelo Freitas da S...
23
by Marcelo Freitas da S...
[AMPL 16568] The set is already defined. by Sun Fei
31
by AMPL mailing list
[AMPL 16742] check if a problem is already declared by lothar.loewer
3
by lothar.loewer
[AMPL 16904] Fix a variable value by Juan Zhang
3
by Juan Zhang
[AMPL 16893] Baron and CPLEX Status Results in Neos Server by Marcelo Freitas da S...
1
by AMPL mailing list
[AMPL 16898] Using Normal random number generation with TWO sets by Laura Pinzon
1
by AMPL mailing list
[AMPL 7230] Re: How to display CPLEX solution time in log file? by sema.esma
2
by Marcelo Freitas da S...
[AMPL 16863] how to declare a multidimensional array parameter by Alan Heirich
3
by AMPL mailing list
[AMPL 16872] Dout about ampl random number generation by Angela Alves dos San...
1
by AMPL mailing list
[AMPL 16872] Boolean Problem - Satisfacibility by fernando.urrutia
1
by AMPL mailing list
[AMPL 16864] Does anyone have an example for a model file for optimal control? by Vinh K
4
by vk
[AMPL 16848] Printing several variables to a .txt file after every iteration in for loop by Laura Pinzon
3
by AMPL mailing list
[AMPL 16852] Array of sets getting set to first element in loop by confusingmanifestati...
1
by AMPL mailing list
[AMPL 16849] No Variables Declared by Chirasree Chatterjee
2
by AMPL mailing list
[AMPL 16721] Error at _cmdno 2 executing "solve" command by Eduardo Bessa
5
by AMPL mailing list
[AMPL 11421] a question about ampl api by Zhiyuan Dong
7
by AMPL mailing list
[AMPL 16844] Same journeys for the same pilots by Eduardo Bessa
0
by Eduardo Bessa
[AMPL 7535] Error: all variables eliminated, but lower bound = 1 > 0 by Fernando Pineda
3
by Marcelo Freitas da S...
[AMPL 16841] Regarding AMPL on Google Virtual Machines by Niranjan Ramesh
0
by Niranjan Ramesh
[AMPL 1576] Formulating a constraint by mattias-11
18
by Marcelo Freitas da S...
[AMPL 16823] Sum Binary Variables - Constrained to an Algebric Value - Not Working - Changing Transmission Grid Topology by Limitating Total Lines ON - IEE 118 bus by Marcelo Freitas da S...
0
by Marcelo Freitas da S...
[AMPL 16818] Three problems in the same .mod file by Lara
1
by ptiwari
[AMPL 16810] Combination with their sum equals to one by Lara
3
by AMPL mailing list
[AMPL 16779] Help for write a special model (MIX): multicommodity-flow + network-design + routing problem by AMPL Beta user
3
by AMPL mailing list
[AMPL 12632] Obtaining the best lower bound through AMPL by atorgovitsky (Bugzil...
10
by qhe
[AMPL 16791] Does anyone know how to create way-points sets that include x and y coordinates? by Vinh K
3
by Vinh K
[AMPL 16771] how to implement two constraints in one command by fangli3
3
by AMPL mailing list
[AMPL 16756] How can I check Solution Points of a Non Linear Model by khan
5
by AMPL mailing list
[AMPL 16789] ERROR with reading BIG Data in AMPL-change system config. 32x to 64x by Eric E Sättar
0
by Eric E Sättar
[AMPL 16767] CSV File and AMPL by stockage.data.ga
1
by AMPL mailing list
[AMPL 16754] markowitz model,conic/cuadratic functions by elias barra
6
by AMPL mailing list
[AMPL 16771] Wrong solution by Mahraz Amini-2
1
by AMPL mailing list
[AMPL 16685] Constraint Alldifferent for linear solvers by dmitry.ezhov.str
7
by AMPL mailing list
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