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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1 answer
@NLConstraint with vectorized constraint JuMP/Julia
I am trying to solve a problem involving the equating of sums of exponentials.
This is how I would do it hardcoded:
@NLconstraint(m, exp(x[25])==exp(x[14])+exp(x[18]))
This works fine with the rest of the code. However, when I try to do it for an…
Cuhrazatee
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- 4
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1 answer
Julia MethodError: no method matching parseNLExpr_runtime(
I'm attempting to code the method described here to estimate production functions of metal manufacturers. I've done this in Python and Matlab, but am trying to learn Julia.
spain_clean.csv is a dataset of log capital (lnk), log labor (lnl), log…
Michael Gmeiner
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- 1
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1 answer
Getting incorrect values in JuMP
The following code is running correctly. However, when I call for the results one of the variables (utilizado) is returning incorrect values, only zeros. I know there is something I am making incorrectly but I don't know where.
using JuMP, Clp
m =…
Ushuaia81
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1 answer
Import a MutivariatePolynomials output into JuMP as a user defined function
I am trying import the output of a function from MultivariatePolynomials and use it into JuMp as a function. Below is the related code, which is part of a large system of NL equations.
using JuMP
using MultivariatePolynomials
@polyvar k s θ_1k…
ludo
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- 9
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1 answer
Unexpected error using Jump with Julia
I am trying to solve an optimization problem, I am getting error as
"ERROR: Expected m to be a JuMP model, but it has type Int64
in validmodel(::Int64, ::Symbol) at C:\Users\Ting.julia\v0.5\JuMP\src\macros.jl:247
in macro expansion; at…
bhawesh sah
- 103
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- 10
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2 answers
Multi dimensional array in Gurobi/Jump/Julia
I am using Jump/Julia to solve an optimization problem. It is a transportation problem with some source locations and some destinations. Additionally, I have different product types so sending one kind of product from source i to destination j is…
bhawesh sah
- 103
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- 10
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0 answers
JuMP's objective function is called with NaN as argument
I want to minimize an objective function with JuMP involving a bessel function.
The complete function is rather complex, and I do not have a derivative of this function.
It seems that JuMP during the auto-derivation calls this function with…
Alex338207
- 1,825
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Quadratic Programming in Julia
Well, I have a quadratic programming optimization problem, well structured in Matlab. For instance,
With x a n*1 vector, we have
x = argmin (1/2*x'*H*x+f'*x)
s.t.
A*x <= b
x_lb<=x<=x_ub
Of course, A is a matrix and b, x_lb, x_ub are…
Zejiang Wang
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- 9
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votes
2 answers
How to define a set in JuMP (JuliaOpt)
It should be easy, but it's almost 3 days that I'm trying to define a set in JuMP. Then, I need to set my variable y for each pair (i', i) belonging to the set O.
O={(i,j): t[j] - t[i] + 30 < d[i,j]; i in D, j in K, i !=j }
y[i,j]=0, for each (i,j)…
Francesco Clementi
- 1,874
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- 28
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1 answer
Julia: global constrained optimization by minimizing an objective function
I am new to JULIA language and I am trying to perform a global optimization with constraints by minimizing an objective function RMSE by optimizing P1 and P2. I tried to run JumP algorithm but received many errors. I will be ever so grateful if you…
Jesus
- 19
- 2
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1 answer
How to create an array of SD matrices?
How do you create an array of (variable)matrices A1,..,AN of semi definite matrices in Julia Jump where N is a parameter? @variable(model,x[1:N]) won't work because this is an array of variables, not of matrix variables.
Thanks in advance.
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0 answers
Docker Julia dependency
Julia is installed on my host machine. Julia script runs very well from here.
I invoke docker with shared Julia installation directories. Julia script is run from these shared directories within docker (i.e. there is no julia image inside docker).
I…
Tims
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Error for Gradient of a multivariate NL function, using ForwardDiff
I am not able to obtain the gradient of a multivariate function using ForwardDiff, (Julia V.06) as shown in the code below:
using ForwardDiff
function…
ludo
- 35
- 9
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0 answers
How to modify variable attributes in JuMP?
I'm using Julia+JuMP and Gurobi to solve a MIP. Is it possible to modify variable attributes like BranchingPriority?
So far, I only found methods in the documentation to modify model parameters. The only variable related modifications that seem to…
muellerd
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2 answers
juMP - use variable defined in sum range
I am trying to define a constraint containing summation over two indices, k and t.
for i in data.I
for j in 1:length(data.P[i])
@constraint(m, w[i, j, length(data.T[data.P[i][j]])]/(1+sum(data.A[i][k][t] for k in 1:length(data.P[i]),…
dylee
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