JuMP is a domain-specific modeling language for mathematical programming embedded in the Julia language.
JuMP is a domain-specific modeling language for mathematical programming embedded in the Julia language.
Questions tagged [julia-jump]
362 questions
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0 answers
How to use filter!() for array type in julia?
If there is the F array in Julia as following
julia> F
5-element Array{Any,1}:
6
28
30
34
49
and I want to reach this
F
1-element Array{Any,1}:
Any[6, 28, 30, 34, 49]
this code is used
F[1]=vcat(F[1],F[2:end])
while true
k=2;
if…
Soma
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1 answer
Constraints in Julia
I'm switching from AMPL to Julia right now, and while I've checked the JuMP manual on constraints, I didn't see there an answer to my question (in case I've missed it - I'm sorry :))
If I have a variable representing a production:
g[i,j]
Where i -…
Arseny Grinchenko
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- 5
0
votes
2 answers
How can I mange the index of the loop in julia?
It is the section of the Genetic algorithm that is coding in Julia. the code was wrote as follow:
popc= [individual(rand(0:1,nvar),[]) for i in 1:nc/4,j in 1:2];
for k=1:nc/4
#select firdt parent
i1=rand(1:npop);
p1=pop[i1];
#select…
Soma
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1 answer
How can I plot mixed integer problem result?
I solved a linear bi-objective mixed integer problem and I want to plot the results. results include lines and points. for example
list=[([0.0; 583000.0], 0), ([190670.0; 149600.0], 0), ([69686.0, 385000.0], 1), ([33296.0, 484000.0], 1),…
Soma
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0
votes
1 answer
Schedule optimization
I'm trying to solve linear programming problem about scheduling. Each task has starting time r, time to solve task p and weight w. I have to minimize following function (C is ending time of task):
function to minimize
With data provided below Result…
PoorGuy
- 29
- 8
0
votes
1 answer
How to mute JuMP (using cplex) log progress?
How to mute JuMP log progress?
I want to suppress the output of JuMP Using model as CPLEX.
최시현
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0
votes
1 answer
Store values generated by a for-loop. JuMP/Julia
It's amazing that the internet is totally void of this simple question (or similar). Or I'm just very bad at searching. Anyway, I simply want to store values generated by a for-loop in an array and print the array. Simple as that.
On every other…
Parseval
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votes
2 answers
Multidimensional string variables in Julia JuMP
I am defining multidimensional variables in JuMP, however, I require the indices to be strings for ease of operation. Some of the indices might not be distinct. How do I set up multidimensional variables in JuMP while allowing for repeat elements?…
ShanAcro
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1 answer
Is this solution in Julia for a network optimization problem correct?
I need to solve this problem in Julia for educational purposes:
I am using Julia 1.1.0 and JuMP v0.19.0
I managed to code a solution. However, I am insecure about the final result. That's my code:
using JuMP
using GLPK
using Cbc # Open source…
Pedro Delfino
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0
votes
1 answer
Why these two versions of Julia code for the same optimization problem are almost identical and produce different results?
I am trying to learn Julia for educational purposes. Specially, I trying to use Julia and the package JuMP to solve operational research problems.
I was watching this great video from youtube. A guy, named Philip Thomas, shows a didatic example.…
Pedro Delfino
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0
votes
1 answer
How to properly use anonymous construction syntax for an optimization problem with multiple restrictions using Julia's JuMP package?
I am using Julia 1.0 with the JuMP package to solve optimization problems. These are my first days using the language. Hence, I am not really comfortable with the syntax.
Following the Quick Start Guide, I was able to solve the problem bellow:
I…
Pedro Delfino
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0
votes
2 answers
"How to make the summation to a specific period in Julia?"
I am formulating mathematical programming and now I have an issue with the summation sign in a constraint. I want to sum over the specific period in a planning horizon, I have tried some but Julia report an error message.
the mathematical formula…
aKorno
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- 1
0
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1 answer
How can I give a constant value to a variable in julia
I have a 2 dimensional matrix variable which it should get a constant value. for example
@variable(model1,x[h=1:3,6]==I[h=1:3,6])
I: is a constant matrix. but in code it gives this error:
ERROR: MethodError: no method matching…
Soma
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0
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1 answer
What are the options to develop a UI for a backend optimization code written using JuMP?
I am right now working on a freight network optimization problem and want to develop a UI for a layman. The code is written using JuMP (Julia 0.6.2). I am trying to create a UI where the user can upload the data and do a bit of sensitivity analysis.…
0
votes
1 answer
Julia - Constraint Programming in JuMP
I know we can use CPLEX in Julia JuMP, for linear programming for instance.
But can we use CPLEX in JuMP, Julia v1.1 for constraint programming ?
CPLEX and OPL can do constraint programming, but what about Julia, are there documentation pages in…
JKHA
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