Charitha Buddhika Heendeniya

May I know whether running NoRel heuristic has an side advantage of improved branching strategy or faster sub-optimal/ infeasible node pruning even in the case NoRel heuristic itself does not yield...

Hello, This might be a simple question, but I want to really understand what is going on behind the scene. I'm trying to linearize a product between a binary and a continuous variable. The binary v...

Hello, community, Please check the following output from the ComputeIIS. From these results, I see that one of these constraints may be causing infeasibility in my model. But I already know for a f...

I understand that ConcurrentMIP lets the solver perform parallel searches along the branch and bound tree for a MIP problem. Suppose one such search finds an incumbent solution, meaning any branch ...

Dear all, Please have a look at the example below. This is not programmatically correct, but I want to show the idea and get your thoughts on implementing it in Gurobi. start_time = {n: t for n, t ...

Hello all, I'm testing a re-optimization method that goes as follows.  Initialize model model.solve() --> solution stored as model.sol Edit model.sol by removing solutions to some variables (incl. ...

I want to know if I can create a MIPSOL callback routine like the one below. Where MIPSOL: Add a lazy constraint to the model, Check if the incumbent solution is still feasible, If feasible: get t...

Dear all, I want to start this thread to share tips/ suggestions for using lazy constraints (using the attribute or callback). Below I share some of my experiences on this, and I would like if othe...

Dear all, I'm trying to use MemLimit parameter  e = Env("gurobi.log", params={'MemLimit': 31, 'PreSparsify': 1, 'MIPFocus': 3, ...

I'm trying to write a constraint (for a task scheduling problem) where I want to say "a maximum of n tasks can overlap". I have the following variables, x(i, j): Task j follows task i (variable) T(...