Hi all Recently, I have encountered some problems in optimizing code speed. I guess it is because I always create dense array variables I want to create a 4x4 array variables, but it only has a value at the index (1, 2), (2, 1), (2, 3), (3, 2) and the rest is 0. The current practice is to use the …

One option would be as follows: julia> using JuMP julia> model = Model() A JuMP Model Feasibility problem with: Variables: 0 Model mode: AUTOMATIC CachingOptimizer state: NO_OPTIMIZER Solver name: No optimizer attached. julia> x = zeros(AffExpr, 3, 3) 3×3 Matrix{AffExpr}: 0 0 0 0 0 0 0 0 …

Can JuMP.jl create a sparse array variable that can be used as a full matrix?

Specific Domains Optimization (Mathematical)

iiitr October 3, 2021, 1:21am 4

Thank you very much for your reply! The code you provided is very helpful.

On the basis of the solution you provided, I raised a new question. If you have time, I’d like to ask you for help!