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Questions tagged [jump]

Questions that use or are about JuMP and other Julia packages.

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12 votes
3 answers

Connection between solver and Julia's JuMP

I am looking for ways or tips to connect a solver with the JuMP package. I started reading the manual of Math Opt Interface — I don't know the right terms, but I'll call it the backend of JuMP. Also, ...
Josa Ferreira's user avatar
6 votes
1 answer

Quadratic constraints in JuMP

I am a bit new to programming and am currently working with solving optimization problems in JuMP in Julia. I got a tip from the JuMP page that I should also use ...
Annaquest's user avatar
3 votes
1 answer

Jump, Julia : How to add constraints with different indexes a.c.a $x_i \leq z_j, \; \forall i, j$

I am having a constraint in the form : $$ x_i \leq z_j, \quad \forall i, j \in \{1, 2, .., n\}$$ I know that if the right part of the equation was a constant so something like $x_i \leq c[i]$ I could ...
tonythestark's user avatar
3 votes
1 answer

How to remove a callback that was previously registered in Julia?

I'm coding in Julia, how can I do the same as "Remove(Cplex.Callback)" function does in C++ ?
Brown's user avatar
  • 173
3 votes
1 answer

Reoptimization with GLPK in Julia/JuMP

I've been looking everywhere, and I can't seem to find any information on whether GLPK can do successive optimizations on the same model, on which we add a constraint at each iteration. More ...
Breizhen's user avatar
2 votes
1 answer

How to get the fractional solution of a node in a MIP model using JuMP package?

I'm coding in Julia and use the JuMP package. My IP solver stops by a fixed node limitation. I noticed that I can only get the feasible primal and dual solution if has any, however I would like to get ...
Brown's user avatar
  • 173
1 vote
0 answers

Does Gurobi solve QCQMIPs with Quadratic terms faster with then Bi-Linear terms in general?

Based on the color distance function defined here i try to find $n$ RGB colors with large inter set color distances and good color distance to white. ...
worldsmithhelper's user avatar