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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2 answers
MethodError: some problems with JuMP in Julia
I have some problems with JuMP. When I run it, it says:
MethodError: no method matching (::Interpolations.Extrapolation{Float64, 1, ScaledInterpolation{Float64, 1, Interpolations.BSplineInterpolation{Float64, 1, Vector{Float64},…
zhang sanle
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1
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1 answer
Statistical tests for two random datasets
I need to compare two data sets, i randomly created them in Julia, with rand. I want to know if there's some statistical test (that can be perform in Julia JuMP) that tells me how different the distributions are (having no assumptions of the…
jvm.97
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1
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1 answer
How can a predefined list can be used for the summation indices in a JuMP @complements() function?
I'm trying to use the JuMP and complementarity libraries to solve an MPEC program. The problem is that the complementarity restrictions have summations in them and I haven't been able to define the indices of those summations.
using JuMP, Ipopt,…
vzehnder
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- 4
1
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1 answer
i can't set the optimizer in Julia
i'm using version 1.4.1 in Julia and wanted to create an optimization model. This is what i did:
using JuMP
using Cbc
model = Model()
set_optimizer(model, Cbc.Optimizer)
And i get this error: "UndefVarError: set_optimizer not defined in top-level…
jvm.97
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1
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1 answer
How to make CPLEX NOT output to terminal window in Julia
I am trying to silent CPLEX messages and so far I manage this:
model = Model(CPLEX.Optimizer)
JuMP.set_parameter(model, "CPX_PARAM_MIPDISPLAY", 0)
But I am still getting some messages like this one:
Version identifier: 12.10.0.0 | 2019-11-26 |…
Dejan Dozet
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1
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2 answers
Mathematical logic in Julia
Does Jump support direct use of mathematical logics in a model?
I know it supports conditional indicator, but how about these conditionals?
For example:
1- A bi-conditional indicator is a binary variable that is associated with satisfaction…
user9990604
1
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1 answer
Is Julia.JuMP 15x slower then Python.Cvxpy?
I was trying to solve a simple optimization problem, first via Python.Cvxpy framework and then via Julia.JuMP framework, but Julia.JuMP formulation is 15x slower.
My optimization problem:
In Python.Cvxpy: (runtime: 4 sec)
# Run: time python…
pqrz
- 133
- 5
1
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1 answer
Any knows the method addinfocallback() in JuMP@0.18 now is replaced by what?
I found following method addinfocallback() in the document of JuMP beta0.18, but couldn't find any in the latest beta's document.
Did anyone know any?
solutionvalues = Vector{Float64}[]
# build model ``m`` up here
function infocallback(cb)
…
aaaaluba
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1
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1 answer
how dose "writecsv() " work in JuliaPro 1.5.0?
Would you please help me?
How is it possible to export the results in Excel in JuliaPro 1.5.0?
I used to use writecsv() such as writecsv("C:\admin\users\Desktop\maincoreectedmodel10.csv",sortlist(List)) in Juliapro 0.6.4
but it makes the error in…
Soma
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1 answer
Is there a way to know how much time is spent in Gurobi usercuts?
I am using JuMP Mathematical Optimization Interface user cuts Callbacks with Gurobi
MOI.set(m, MOI.UserCutCallback(), callback_benders_usercuts)
And I would like to know if there is a way to know how much time is spent in my usercut function…
JKHA
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1
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1 answer
Julia - Using JuMP Triangular Matrix Variables in JuMP causes bad type performance
On the next MWE, @code_warntype returns bad performance type, ##1469::JuMP.Containers.SparseAxisArray.
using JuMP, Gurobi
function MWE(n)
m = Model(Gurobi.Optimizer)
@variable(m, x[i=1:n, j=i+1:n], Bin)
@variable(m, y[i=1:n],…
JKHA
- 1,800
- 11
- 28
1
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1 answer
Julia - Gurobi Callbacks on array of JuMP variables
In Gurobi and JuMP 0.21, it is well documented here on how you would access a variable with a callback:
using JuMP, Gurobi, Test
model = direct_model(Gurobi.Optimizer())
@variable(model, 0 <= x <= 2.5, Int)
@variable(model, 0 <= y <= 2.5,…
JKHA
- 1,800
- 11
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1
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2 answers
julia jump: declare array with variable upper and lower limit
I am trying to solve a sensitivity analysis using Julia (JUMP). I am stuck at the following problem:
I am trying to declare a variable that has both an upper and a lower limit to feed it to the lp_objective_perturbation_range function. That function…
true_shadow
- 11
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1
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1 answer
Why GLPK Solver doesn't verbose anything in JuMP?
I create this simple code as a demonstration:
using GLPK
using JuMP
m = Model(GLPK.Optimizer)
@variable(m, y[i=1:100], Bin)
@objective(m, Min, sum(y))
@constraint(m, [j=5:50], sum([y[i] for i in j:j+10]) >= 5)
optimize!(m)
Please note this integer…
JKHA
- 1,800
- 11
- 28
1
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1 answer
Combinations adding up to a target - Julia lang
I am new to Julia, I've asked this question in a simpler form, I need to expand it a bit more.
I need to find a combination of numbers in an array that add up to a certain target AND are a part of the same group. Here is my…
Nev1111
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