How optimization algorithms work & improving their performance

How to make the search over B&B tree faster? Answered
0 votes 13 comments
Speed up gurobi to solve an milp Answered
1 vote 13 comments
Branch and price example Answered
1 vote 12 comments
How to solve this MILP-based regression model faster? Answered
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Array or List Answered
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Gurobi very slow at solving MIQP Answered
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Implementation of Benders Decomposition with Callbacks Answered
1 vote 9 comments
Limit solutions for an LP Answered
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Unable to find optimal solution for some instances Answered
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VarHint where MIP Start is not applicable (with pyomo) Answered
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MIPGap and Runtime query before optimization stops Answered
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Not that large MILP model took ages to obtain the optimal results Answered
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Disable Crossover for MILP that is reduced to LP in Presolve Answered
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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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Providing integer start solution drastically increases root relaxation computation time Answered
1 vote 7 comments
How to improve solver solution time in VRP TW Optimization Answered
1 vote 6 comments
GurobiError: Invalid argument to LinExpr multiplication Answered
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Interpreting the log file for the branch-and-cut tree search Answered
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How does NodeMethod work? Answered
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Adding a few variables and constraints makes the model nearly unsolvable Answered
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pre-solve is buggy Answered
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Some questions about what I do to deal with the slow decline of gap value. Answered
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About the calculation speed Answered
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MIP start takes very long to process Answered
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Cut loop at root node of MIP Answered
1 vote 6 comments
Separating specific cuts Answered
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MIP start did not produce a new incumbent solution Answered
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Column Generation Answered
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