User Kuifje

22 votes

What are the advantages of commercial solvers like Gurobi or Xpress over open source solvers like COIN-OR or CVXPY?

answered Nov 4, 2020 at 21:49

18 votes

Accepted

Linear Programming - Motivation behind the Dual Simplex Method

answered Apr 21, 2022 at 14:20

16 votes

Accepted

MILP Penalty Function Only for Negative Values

answered Mar 7, 2022 at 20:44

15 votes

Accepted

No "not equals" constraint in Gurobi

answered Feb 1, 2022 at 14:19

15 votes

Accepted

Where can I find documentation on good practices for efficient formulations of a problem?

answered Apr 15, 2021 at 7:54

14 votes

Are Python and Julia used for optimization in industry?

answered Apr 23, 2020 at 8:47

14 votes

Beginner friendly open source projects in O.R

answered Nov 26, 2021 at 15:19

13 votes

Accepted

Dividing machines into groups of equal sizes so that each group has approximately same productivity

answered Jan 19, 2022 at 12:12

13 votes

Accepted

Branch and Price algorithm is exact?

answered Aug 9, 2020 at 15:17

13 votes

Accepted

Rewriting if-then constraints of binary summations

answered May 14, 2023 at 9:26

13 votes

Accepted

When are Jupyter Notebooks used to solve optimization problems in Operations Research?

answered Jan 3 at 8:56

12 votes

Accepted

Is there a better way of defining a constraint on positive integer variables such that no two variables are the same and are uniquely assigned a value

answered Jul 28, 2022 at 6:54

11 votes

Accepted

Integer column generation without branch & price

answered Jun 24, 2022 at 8:31

11 votes

Is Dantzig-Wolfe and Benders' Decomposition still applied in Operations Research?

answered Aug 30, 2022 at 19:49

11 votes

Breakthroughs in Operations Research since 2010

answered Jan 4, 2022 at 8:52

11 votes

What are technologies or libraries which greatly improve the speed or ease of use for delivering of OR software?

answered Jul 20, 2021 at 9:48

11 votes

How to implement branch and price?

answered Oct 2, 2020 at 7:51

10 votes

Accepted

How to set a limit for a switch to 0 of a variable for 2 variables combined

answered Apr 26, 2021 at 9:38

10 votes

Accepted

ILP Constraint to ensure exactly one constraint from a set of constraints is satisfied

answered Feb 5, 2021 at 17:56

10 votes

Problem is infeasible with Gurobi, feasible with cbc (but can't access objective value)

answered Feb 10, 2022 at 14:30

10 votes

MIP constraint with sum of decision variables having certain value : $\sum_{i=1}^nx_i = 2 \implies \delta = 1$

answered Dec 12, 2022 at 8:51

10 votes

Accepted

Interpretation of a subtour elimination constraint in the TSP

answered Mar 22, 2022 at 11:36

9 votes

Accepted

MILP - quantify magnitude of overlap

answered Mar 31, 2022 at 10:20

9 votes

Accepted

Optimization Solution Framework

answered Jan 14, 2022 at 13:29

9 votes

Accepted

Modelling stronger binary expression

answered Jan 17, 2022 at 10:47

9 votes

How to construct my mixed integer programming problem with constraint of minimum consecutive ones

answered Dec 8, 2021 at 14:37

9 votes

How to represent an integer variable via binary variables?

answered Jul 4, 2021 at 15:20

9 votes

Using the values of variable in the objective function before optimizing

answered Sep 20, 2021 at 10:36

9 votes

Accepted

Convert MPS file to the associated MIP model

answered Sep 20, 2021 at 14:54

9 votes

Accepted

How to enforce a relation between two variables

answered Sep 27, 2021 at 7:50

Stack Exchange Network

191 Answers

What are the advantages of commercial solvers like Gurobi or Xpress over open source solvers like COIN-OR or CVXPY?

Linear Programming - Motivation behind the Dual Simplex Method

MILP Penalty Function Only for Negative Values

No "not equals" constraint in Gurobi

Where can I find documentation on good practices for efficient formulations of a problem?

Are Python and Julia used for optimization in industry?

Beginner friendly open source projects in O.R

Dividing machines into groups of equal sizes so that each group has approximately same productivity

Branch and Price algorithm is exact?

Rewriting if-then constraints of binary summations

When are Jupyter Notebooks used to solve optimization problems in Operations Research?

Is there a better way of defining a constraint on positive integer variables such that no two variables are the same and are uniquely assigned a value

Integer column generation without branch & price

Is Dantzig-Wolfe and Benders' Decomposition still applied in Operations Research?

Breakthroughs in Operations Research since 2010

What are technologies or libraries which greatly improve the speed or ease of use for delivering of OR software?

How to implement branch and price?

How to set a limit for a switch to 0 of a variable for 2 variables combined

ILP Constraint to ensure exactly one constraint from a set of constraints is satisfied

Problem is infeasible with Gurobi, feasible with cbc (but can't access objective value)

MIP constraint with sum of decision variables having certain value : $\sum_{i=1}^nx_i = 2 \implies \delta = 1$

Interpretation of a subtour elimination constraint in the TSP

MILP - quantify magnitude of overlap

Optimization Solution Framework

Modelling stronger binary expression

How to construct my mixed integer programming problem with constraint of minimum consecutive ones

How to represent an integer variable via binary variables?

Using the values of variable in the objective function before optimizing

Convert MPS file to the associated MIP model

How to enforce a relation between two variables