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Questions - julia-jump

How to have conditions for constraints?

How can I code a constraint like this in JUMP? Suppose i,j,k,m are indices and capital letters associated with them are set, like J. x_{i,j,k,m'} + sum((j in J, k in K), y_{j,k,m})<= z_{i,m} for al...
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Hemfri

julia

julia-jump

Votes: 0

Answers: 2

Latest Answer

I understand that you want a multi-dimensional constraint loop with filtering. I get this to a minimal working example: M=1:10 model = Model(HiGHS.Optimizer) @variable(model, y[1:lenght(M),1:lenght(M)...
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Przemyslaw Szufel

Ctrl+C does not interrupt optimize!() regardless of solver

The problem pertains to JuMP, an optimization package for Julia. I realize this problem is likely specific to my machine; however, I have tried many of the obvious remedies with no luck. When I run a ...
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PippyEnjoyer

julia

gurobi

julia-jump

Votes: 0

Answers: 1

Latest Answer

Terminating external C code in Julia is difficult. GLPK and Cbc do not support it. Gurobi does, but not for LPs, and only at particular times. It may ignore the interrupt, if, for example, it is still...
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Oscar Dowson

Julia JuMP making sure nonlinear objective function has correct function signatures so that autodifferentiate works properly?

so I wrote a minimum example to show what I'm trying to do. Basically I want to solve a optimization problem with multiple variables. When I try to do this in JuMP I was having issues with my function...
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Eigenvalue

julia

julia-jump

automatic-differentiation

Votes: 0

Answers: 2

Latest Answer

I found the problem: in my mat_fun the type of the return had to be "Real" in order for it to propgate through. Before it was Float64, which was not consistent with the fact I guess all type...
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Eigenvalue

How to import and read excel rows in Julia?

I have a dataset like the following picture and want to read and extract each cell and assign them into parameters in an optimization model. For example, considering only one part of a row: ID, Min, ...
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user9990604

julia

julia-jump

Votes: 0

Answers: 1

Latest Answer

Since JuMP is agnostic to the format of the input data, the answer is: it depends on what you want to do with it. Pick whatever makes the most sense to you. There are a few data related tutorials that...
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Oscar Dowson

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