Riley Clement

Hi Ying, You can try and reduce it the issue using IntegralityFocus - this is particularly relevant if you have big M constraints, and you should also try and find the tightest M values possible, e...

No problem, my advice for comparison is to use the following approach as an example: import numpy as npimport timeitsetup = """import gurobipy as gpm = gp.Model()x = m.addVar()y = m.addVar()"""stat...

Hi Yooseung, I don't have the working knowledge to answer this, maybe someone else will, but it seems like something you could easily test? You can write out an LP file with gurobi_write() and insp...

Hi Panggah, Jarek has given me the green light to post some creative solutions if you want to keep your data in its current format, which does have it's advantages - not sure if speed is one of the...

Hi, I think we've had a swing and a miss from our Gurobot here, and it's not aware that we can use addConstr with the Matrix API. When I run your code I'm told there is an error in this line: m.add...

Hi Wenny, If gurobi had supported "hierarchical optimization", my model might have worked. I think "hierarchical optimization" is a broad term, possibly meaning different things to different peop...

Hi Wenny, I took a look at your repo, and while I understood what was happening in the diagram, it was really unclear what the actual optimization problem is.  But I did wonder about the following ...

Hi Mohammad, I think it would be a good idea to closely read the API doc for cbSetSolution. When you use  model.cbSetSolution(z_var,new_z_val) You are telling the solver you have a new solution, an...

I can only guess (and that guess is that nobody has ever wanted it before), but I'll see if I can find out if there is another reason. For your case I think the cleanest solution might be to avoid ...

Hi Johannes, SolCount refers to the number of stored solutions, not the number of solutions found.  The maximum number of solutions stored is dictated by PoolSolutions (default = 10).  If you make ...