Modeling – Gurobi Help Center

Mathematical questions around optimization model formulations

Is the branch and bound tree saved for future re-optimization? Answered
Hauk Bjørnland April 08, 2021 10:02

0 votes 4 comments
Subtour Elimination constraint with the RHS not equal to |S|-1
Lilly Yang April 06, 2021 01:37

0 votes 1 comment
Gurobi takes very long time to solve MIQP Answered
N L April 05, 2021 16:29

0 votes 8 comments
model is infeasible or unbounded Answered
Shaojie Liu April 03, 2021 15:41

0 votes 3 comments
Is it possible to retrieve duals from the root node (with added cuts by the solver) in a MILP problem?
Seyedkianoush Mousavichashmi April 01, 2021 14:58

0 votes 1 comment
TypeError: unsupported operand type(s) for /: 'int' and 'Var' Answered
Hernani Delgado Chantre March 31, 2021 16:44 Edited

0 votes 2 comments
Solving thousands of QP parallelly on a machine
Bo Yang March 30, 2021 19:37

0 votes 2 comments
Performing condition constraints Ongoing
chaung yun chi March 30, 2021 15:00

0 votes 11 comments
sum of square roors in objective Answered
Sharon Müller March 29, 2021 17:03

0 votes 3 comments
(max-min) optimization Answered
hamzih alsmadi March 28, 2021 04:19

0 votes 4 comments
TypeError: object of type 'gurobipy.LinExpr' has no len() Answered
Hernani Delgado Chantre March 26, 2021 18:32

0 votes 5 comments
I need help with LinExpr Answered
Amogh Bhosekar March 25, 2021 17:52

1 vote 4 comments
Very slow hierarchical objective optimization Answered
Alexia Payan March 25, 2021 17:48

0 votes 2 comments
VRP with optional nodes
Viktor Ihler March 23, 2021 18:21

0 votes 1 comment
Minimize number of nonzero entries Answered
Christoph Zöll March 23, 2021 15:14

0 votes 6 comments
[HELP] Sensitivity analysis Answered
Evans Etrue Howard March 22, 2021 14:17

0 votes 4 comments
Add Constraint for only some tuples Answered
Ozlem Akbudak March 20, 2021 08:25

0 votes 2 comments
The form of data
chaung yun chi March 18, 2021 09:53

0 votes 3 comments
Understanding rigor of Gurobi MIP solver in non-convex setting Answered
Zach Hunter March 16, 2021 17:42

0 votes 4 comments
How to implement an LP Relaxation with Gurobi Answered
MG March 16, 2021 15:47

0 votes 5 comments
Travelling Salesman with Time Windows Answered
Niels Strande March 12, 2021 16:02 Edited

0 votes 5 comments
Set origin for TSP Answered
Niels Strande March 11, 2021 14:50

0 votes 2 comments
model construction gurobipy; working with tupledicts Answered
Penelope Mitchell March 09, 2021 16:22

0 votes 3 comments
Job Shop Scheduling Problem
Hanna Lindner March 09, 2021 09:36

-1 votes 1 comment
Primal Dual Conversion Answered
Sheng Hui Tan March 09, 2021 05:12

0 votes 2 comments
Collecting decision variables together Answered
Guy Scher March 09, 2021 04:31 Edited

0 votes 5 comments
write the relation between two deision variables Ongoing
Ray TAN March 03, 2021 10:02

0 votes 2 comments
IndexError: too many indices for array Ongoing
Sab February 28, 2021 01:00 Edited

1 vote 2 comments
Find the coefficient of a variable in a complex (very large) objective function Answered
Chris Domnisoru February 27, 2021 16:51

0 votes 3 comments
Help with converting variables from divisor Answered
Wei Tang February 26, 2021 00:10

0 votes 3 comments

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