Algorithms

How to make the search over B&B tree faster? Answered

• Fikri Kucuksayacigil
• December 27, 2021 19:59

0 votes 13 comments

Speed up gurobi to solve an milp Answered

• Ebru Angun
• April 05, 2019 17:33

1 vote 13 comments

Branch and price example Answered

• A.Omidi
• April 05, 2019 21:23

1 vote 12 comments

How to solve this MILP-based regression model faster? Answered

• Xianbang Chen
• April 26, 2021 13:36
• Edited

0 votes 11 comments

Array or List Answered

• Cris
• October 10, 2020 18:10
• Edited

0 votes 10 comments

Gurobi very slow at solving MIQP Answered

• Astghik Hakobyan
• May 16, 2019 17:18

0 votes 10 comments

Unable to find optimal solution for some instances Answered

• Yaroslav Pylyavskyy
• May 17, 2022 13:59

0 votes 8 comments

VarHint where MIP Start is not applicable (with pyomo) Answered

• Jacob Mannhardt
• May 14, 2021 10:38
• Edited

0 votes 8 comments

MIPGap and Runtime query before optimization stops Answered

• Wu Hao
• July 04, 2020 16:40

0 votes 8 comments

Not that large MILP model took ages to obtain the optimal results Answered

• Ting Liang
• June 21, 2020 20:25

0 votes 8 comments

Disable Crossover for MILP that is reduced to LP in Presolve Answered

• Jacob Mannhardt
• June 09, 2022 07:37

0 votes 7 comments

Optimal solution found early but long time to close gap Answered

• Marta Vanin
• October 22, 2021 15:40

0 votes 7 comments

L1 minimization Answered

• L1fe
• September 30, 2021 17:20
• Edited

0 votes 7 comments

Bug report: Different settings of MIPFocus result in different number of solutions Answered

• Kai Hu
• August 26, 2021 11:57

0 votes 7 comments

Providing integer start solution drastically increases root relaxation computation time Answered

• Hendrik Weber
• November 17, 2020 19:03
• Edited

1 vote 7 comments

Limit solutions for an LP Answered

• Zohar Levi
• August 11, 2022 12:08
• Edited

0 votes 6 comments

How to improve solver solution time in VRP TW Optimization Answered

• Rihot Gusron
• July 08, 2022 10:14
• Edited

1 vote 6 comments

GurobiError: Invalid argument to LinExpr multiplication Answered

• Geoffrey James Kameni Tchokode
• April 06, 2022 11:03

0 votes 6 comments

Interpreting the log file for the branch-and-cut tree search Answered

• Marcus Garvie
• January 31, 2022 17:12

0 votes 6 comments

How does NodeMethod work? Answered

• Fikri Kucuksayacigil
• December 14, 2021 00:23

0 votes 6 comments

Adding a few variables and constraints makes the model nearly unsolvable Answered

• Fikri Kucuksayacigil
• October 25, 2021 16:57

0 votes 6 comments

pre-solve is buggy Answered

• Zohar Levi
• September 16, 2021 09:36

0 votes 6 comments

Some questions about what I do to deal with the slow decline of gap value. Answered

• Yanbo Fan
• August 29, 2021 16:12

0 votes 6 comments

About the calculation speed Answered

• Yanbo Fan
• June 30, 2021 10:20

0 votes 6 comments

MIP start takes very long to process Answered

• Mike Lang
• January 25, 2021 08:05
• Edited

0 votes 6 comments

Cut loop at root node of MIP Answered

• Fan YANG
• August 23, 2019 15:23
• Edited

1 vote 6 comments

Separating specific cuts Answered

• A.Omidi
• August 09, 2019 22:47

0 votes 6 comments

MIP start did not produce a new incumbent solution Answered

• Taner Cokyasar
• June 20, 2019 22:26

0 votes 6 comments

Complexity reduction makes the algorithm slower Answered

• Florian Kaltwasser
• July 06, 2022 08:17

0 votes 5 comments

Difference between nested quicksum and several quicksums Answered

• Trista Cheng
• April 27, 2022 10:42
• Edited

0 votes 5 comments