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 15228] Message "Attempt to iterate over an interval." by Valdir de Jesus
1
by ptiwari
[AMPL 15217] EXCEPTION_VIOLATION_ERROR by rsl.shamsi
1
by Robert Fourer-2
[AMPL 15219] One solver is converged and the other not! by SG
2
by SG
[AMPL 15214] Linearize max function involve binary variables. by Cheng-Lung Chen
1
by Robert Fourer-2
[AMPL 15210] How to compute cov of dw matrix if any rows of data d is weighted by vector w ? by programistawpf
2
by programistawpf
[AMPL 15197] Sensitivity Analysis for Mixed Integer Linear Programs by chrisnytun10
3
by Robert Fourer-2
[AMPL 15200] Find Local or Global Optimum by SG
2
by SG
[AMPL 15182] Binary variable taking values other than 1 and 0 by McKenna_Davis
3
by Robert Fourer-2
[AMPL 15194] Linearize quadratic constraints. by giuliano.nassisi
1
by Robert Fourer-2
[AMPL 15066] neos/ampl-ipopt problem by Dridi Marwa
9
by Dridi Marwa
[AMPL 15172] [Error massage]integer unbounded ray by Hyuk Park
4
by Hyuk Park
[AMPL 15180] set Bar and set Ram by santi ayabaca
1
by ptiwari
RE: [AMPL 15185] Re: write model results into excel-sheet by Robert Fourer-2
1
by Eric E Sättar
[AMPL 15095] Flow shop model switching job order by 12eileen1234
2
by 12eileen1234
[AMPL 11385] Exporting Data from AMPL by Victoria Mao
5
by felipe.canelo
[AMPL 15182] Bubble sort by Andreia Anjos
1
by Robert Fourer-2
[AMPL 15154] Weighted objective problem in coding by Prabhupad Bharadwaj
3
by Robert Fourer-2
[AMPL 15165] Error Reading Parameter Data into AMPL by Costin Seward
1
by Robert Fourer-2
[AMPL 15086] Problems reading from Excel to AMPL by McKenna_Davis
11
by McKenna_Davis
[AMPL 15161] Multiple TSP _ Min Delivery Time by lch93lily
1
by Robert Fourer-2
[AMPL 15161] AMPL Terminating by Alyssa Mosca
1
by Robert Fourer-2
[AMPL 15160] Beginner in AMPL with doubts in a specific modeling (syntax) by Valdir de Jesus
1
by Robert Fourer-2
[AMPL 15172] [Error massage] integer unbounded ray. by Hyuk Park
0
by Hyuk Park
[AMPL 15165] AMPL: Adding rows/columns to a matrix by Fantasywarrior2
2
by ptiwari
[AMPL 15155] Activate constraints with a if condition by Andrea Di Taranto
1
by Robert Fourer-2
[AMPL 15075] syntax translation for constraints by nik.redlich
3
by Robert Fourer-2
[AMPL 15165] Error Reading Data from csv file into AMPL by Costin Seward
0
by Costin Seward
[AMPL 15085] write model results into excel-sheet by Eric E Sättar
6
by Eric E Sättar
[AMPL 15157] Estimating time complexity for MINOS and SNOPT by antenucci.d
1
by Michael Saunders-3
[AMPL 15151] ODBC output file is blank by Ratna S
1
by Robert Fourer-2
[AMPL 15134] Can't find file by Nvr
2
by Nvr
[AMPL 15143] Not writing a table via ODBC by Ratna S
2
by Ratna S
[AMPL 15130] the result is always 0 by Olivia
2
by Robert Fourer-2
[AMPL 15096] Error writing table with table handler odbc: Could not connect by Ratna S
5
by Ratna S
[AMPL 15125] AMPL running cplex wont go past first node. by Erin Mullin
1
by Robert Fourer-2
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