How optimization algorithms work & improving their performance

MIPGap and Runtime query before optimization stops Answered
0 votes 8 comments
Not that large MILP model took ages to obtain the optimal results Answered
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Element of decisionvariable is missing Answered
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Add a new constraint to the model Open
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Simplex method does not stop at optimal solution. Answered
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BestBd not updating in a MIQCP problem Answered
1 vote 7 comments
Concurrent Optimizer and callbacks Answered
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How to extract fractional solution from GUROBI ILP? Answered
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Vehicle Routing Problem with Time Windows with Gurobi and Python Answered
1 vote 7 comments
Convex combination of constraints that makes the problem infeasible Answered
1 vote 7 comments
How to interpret IntFeasTol ? Ongoing
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Disable Crossover for MILP that is reduced to LP in Presolve Answered
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Setting Threads parameter does not work as expected Awaiting user input
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Optimal solution found early but long time to close gap Answered
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L1 minimization Answered
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Bug report: Different settings of MIPFocus result in different number of solutions Answered
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Gurobi stopping criteria
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Providing integer start solution drastically increases root relaxation computation time Answered
1 vote 7 comments
Distributed MIP logging & ramp-up question
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Log file does not show the gap Answered
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MIP stuck in branch-and-cut in some situations Answered
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Lack of progress in Best Bound past a certain point and no termination for MINLP Answered
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LP relaxation is not solved to optimality Awaiting user input
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Significantly different results of scaled and unscaled models Answered
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How to speed up MILP model to find the solution? Answered
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Suboptimal termination and unbounded or infeasible solution Answered
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What do the following things mean in Gurobi output? Answered
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Lower memory usage for MILP problem Answered
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How to improve solver solution time in VRP TW Optimization Answered
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Difference between nested quicksum and several quicksums Ongoing
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