I would like to define a constraint in an optimization problem as follows: (x,y) not in {(x,y)|1.0 < x < 2.0, 3.0 < y < 4.0}. what I trie ...
While I am defining a linear programming variables, I have to consider index_i = 1:3 index_j = J = [1:2, 1:5, 1:3] I want to define a variable x ind ...
Was hoping a Julia or JuMP expert could help me on how to do the following (apologies as I am new to the language and tried all resources but cannot f ...
I would like to have instead of only the vector of optimal solution to a mip , all the feasible (suboptimal) vectors. I found some old questions here, ...
I want to solve an optimization problem in Julia. I am trying to define a binary variable x_{r,i} Thereby, the length of the sets of both indices is n ...
I have the following function in JuMP/Julia: where: and V0 is a scalar. When using the above function within a linear constraint, the model wor ...
. Answers to this question are eligible for a +50 reputation bounty. ik ...
I am trying to minimize a nonlinear function with nonlinear inequality constraints with NLopt and JuMP. In my test code below, I am minimizing a funct ...
In Python, you can do: What is the equivalent for Julia and JuMP? I tried Without success. I am not trying to get Gurobi.jl package version whi ...
How can I specify in julia project's Project.toml that a different version of JuMP should be installed with specific julia versions. I would like to u ...
To solve a tsp in my codes, I need to use LKH package. But I couldn't add the package to the Julia in 0.6.4.1 version. Unfortunately all my codes in t ...
I would like to use the optimization model in a code. But processing and preparation time of the objective function (f) is too long. Is there any way ...
I'm trying to write a constraint in the from of the following (also attached): I already have all possible combinations of (i,j,s,p) stored in a se ...
Is there any way for Julia to change the format of the following Tsp model to *.lp file? I tired this: It doesn't give any error but I can't see ...
I was wondering whether in JuMP it's possible to be aware of the value of variables while the model is still running?? I mean, suppose we have a set o ...
I have written an optimization model that has 3 binary decision variables that are all in matrix form (X[p,s], Y[a,s], and Z[a,p]). a=associate, p=pro ...
It is used in the code: tt=Array{Int64}(undef,0) but the following error is shown: UndefVarError: undef not defined would you please say why it happen ...
I notice in the newer version of JuMP, after setting parameter info of solvers, this information is printed in the terminal. How can I suppress it? ...
I'm trying to solve a problem with JuMp and it's a non linear problem. So I have the error bellow : And I'm using @NLobjective and @NLconstraint. ...