Algorithms

Distributed MIP logging & ramp-up question

• Simon Felix
• December 06, 2019 15:08

3 votes 7 comments

MILP takes way too much time Answered

• Marco Sp
• July 08, 2022 06:53

2 votes 2 comments

MIP start is the optimal solution and yet I receive "MIP start did not produce a new incumbent solution"

• Monir Sabbaghtorkan
• April 30, 2020 19:37

2 votes 4 comments

Model contains large quadratic objective coefficient range.

• Soufyan Zayou
• January 23, 2020 10:59

2 votes 9 comments

Tolerance and constraint parameters Answered

• Soufyan Zayou
• January 12, 2020 12:31

2 votes 3 comments

What solution wll GUROBI return when solving an unbounded MILP?

• Yingxiao Ye
• January 10, 2020 12:41

2 votes 0 comments

Order of variables & constraints vs. performance Answered

• Joost Berkhout
• July 08, 2019 13:39

2 votes 3 comments

Theory about the algorithms Answered

• Luca Vitale
• April 17, 2019 12:45

2 votes 2 comments

Same nodes but different solution time (VRP Time Windows) Answered

• Rihot Gusron
• July 20, 2022 08:09
• Edited

1 vote 3 comments

Interpretation best bound NoRel heuristic Answered

• Anne-Kett Bassing
• July 14, 2022 11:07
• Edited

1 vote 1 comment

How to improve solver solution time in VRP TW Optimization Answered

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

1 vote 6 comments

How Gurobi compute IIS for MIP problem? Answered

• Ramy Mohamed
• February 23, 2022 13:37

1 vote 5 comments

Solver behaviour when giving fixed variable a start value Answered

• Sebastian Triebs
• February 11, 2022 10:41
• Edited

1 vote 1 comment

Lazy constraint in MIPNODE and MIPSOL Awaiting user input

• ce jekl
• December 19, 2021 09:27
• Edited

1 vote 5 comments

How do I specify the algorithm used to solve my model in pyomo? Answered

• Amanda Farnsworth
• September 08, 2021 17:19

1 vote 1 comment

Unable to find sub-optimal solution Answered

• Mohit Kumar
• August 31, 2021 07:11

1 vote 3 comments

What happens after root relaxation has been solved? Long time before exploring further nodes according to log Answered

• Hendrik Weber
• August 24, 2021 12:51
• Edited

1 vote 2 comments

Optimization time: local machine vs computer cluster Answered

• Pedro Zattoni Scroccaro
• July 21, 2021 16:43

1 vote 1 comment

Worse performance for smaller problem Answered

• Danylo Lykov
• July 05, 2021 19:13

1 vote 4 comments

Speeding up Gurobi LP solver Ongoing

• Tobias Höschen
• June 01, 2021 13:24
• Edited

1 vote 8 comments

same LP solution multiple times in root node, user cuts ignored

• Mario Ruthmair
• May 12, 2021 14:20

1 vote 1 comment

Astronomically low node throughput; major degeneracy? Answered

• Philip Taffet
• April 27, 2021 15:04

1 vote 2 comments

the time Answered

• hamzih alsmadi
• March 05, 2021 00:46
• Edited

1 vote 1 comment

Providing integer start solution drastically increases root relaxation computation time Answered

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

1 vote 7 comments

Advice on Cuts and Reducing Solution Time Ongoing

• William ONeill
• November 16, 2020 22:02

1 vote 1 comment

Implementation of Benders Decomposition with Callbacks Ongoing

• Pramesh Kumar
• November 16, 2020 20:26

1 vote 9 comments

Is it possible to get the value of the Interior Solution ? Ongoing

• Paul Maximilian Röhrig
• October 01, 2020 15:24

1 vote 3 comments

Lift and project cut Answered

• Tang Try
• September 14, 2020 01:22

1 vote 2 comments

Updating of Best Bound based on integrality of objective function value (due to integer coefficients and integer decision variables) Answered

• Hendrik Weber
• August 18, 2020 13:54
• Edited

1 vote 3 comments

Is it possible to use different time limits for each hierarchy when using lexicographic optimization?. Answered

• José Miguel Quesada Pérez
• August 17, 2020 12:59

1 vote 3 comments