User Richard

1 vote

How to calculate the trade-off between objectives in multi-objective optimization?

multi-objective-optimization

answered Apr 28 at 8:58

4 votes

Accepted

I'm trying to solve an OR problem written using pulp framework , with gurobi, in Linux , but I'm not able to solve it

answered Apr 20 at 8:34

5 votes

How to measure the tightness of MILP models?

mixed-integer-programming linearization

answered Apr 5 at 8:50

8 votes

Have we understood the limitations of the Simplex method on nonlinear programs?

optimization linear-programming

answered Feb 4 at 7:48

2 votes

Linearizing $x^2/(1-x)$ by partitioning the interval $0<x\le X$

linearization nonlinear-programming

answered Jan 18 at 8:47

17 votes

Why is open source operations research software so far behind open source statistics and machine learning software?

mixed-integer-programming combinatorial-optimization software

answered Jan 6 at 8:19

2 votes

Accepted

How to say to Gurobi solver with Python API to start from a given solution?

mixed-integer-programming gurobi heuristics metaheuristics

answered Dec 2, 2021 at 8:29

1 vote

Assistance in formulating binary constraint(s)

mixed-integer-programming modeling binary-variable logical-constraints

answered Oct 16, 2021 at 12:00

5 votes

Accepted

Tuning the coefficients of an objective function of LP

optimization linear-programming modeling

answered Aug 31, 2021 at 8:04

1 vote

How to find the optimal solution of a convex program given all KKT points?

convex-optimization kkt-conditions lagrange-multipliers

answered Aug 13, 2021 at 7:56

1 vote

gurobipy.GurobiError: Second argument should be a list of Var

python gurobi

answered Jun 30, 2021 at 9:54

3 votes

Setting up Branching Priority for GUROBI in Pyomo

mixed-integer-programming modeling pyomo

answered May 17, 2021 at 8:47

7 votes

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

mixed-integer-programming modeling reference-request

answered Apr 15, 2021 at 7:25

1 vote

Mixed Integer Programming - How to model the dependency of two variables in an objective function

mixed-integer-programming linear-programming

answered Mar 24, 2021 at 7:23

13 votes

Recommendations for OM blogs

optimization inventory supply-chain

answered Mar 10, 2021 at 9:02

1 vote

Accepted

Link a binary variable to continuous variable in Java Gurobi

optimization gurobi java

answered Mar 5, 2021 at 12:43

7 votes

Are there explainability approaches in optimization?

integer-programming reference-request

answered Jan 25, 2021 at 8:24

6 votes

Best practices regarding using "aggregated variables" in MIP

mixed-integer-programming

answered Dec 11, 2020 at 9:01

3 votes

Accepted

How to get an extreme ray of an LP from Gurobi

integer-programming gurobi binary-variable c++ extreme-rays

answered Nov 17, 2020 at 15:25

3 votes

Are there any standard "tests" that determine if a model will not optimize / no solution?

optimization algorithms

answered Oct 26, 2020 at 7:51

8 votes

Issue in solving a large scale MIQP problem

optimization mixed-integer-programming integer-programming gurobi

answered Oct 5, 2020 at 7:08

1 vote

How to obtain the sensitivity analysis of correlated data?

sensitivity-analysis

answered Sep 7, 2020 at 7:49

3 votes

How to evalute the quality of a solver (beyond solution quality and time efficiency)?

solver reference-request applications

answered Aug 5, 2020 at 12:39

6 votes

Nonlinear integer (0/1) programming solver

integer-programming linearization nonlinear-programming quadratic-programming

answered Aug 4, 2020 at 11:41

2 votes

Output of binary variable greater than one

optimization mixed-integer-programming linear-programming python pulp

answered Jul 2, 2020 at 8:19

8 votes

Accepted

How to improve the quality of code in OR?

reference-request software or-careers

answered Jun 30, 2020 at 15:23

6 votes

Partial derivative of LP solution $(x_1 , \ldots, x_n)$ w.r.t. $x_i$ or $a_i$

optimization linear-programming sensitivity-analysis

answered Oct 22, 2019 at 8:23

7 votes

Where to search for PhD level jobs in OR?

job-market phd

answered Oct 17, 2019 at 7:33

7 votes

How do we decide/plan an SLA for an NP-hard optimization process running in production?

optimization mixed-integer-programming solver computational-complexity

answered Sep 25, 2019 at 8:15

7 votes

Are fuzzy sets appreciated by OR community?

journals

answered Sep 22, 2019 at 8:10

Stack Exchange Network

current community

your communities

more stack exchange communities

42 Answers

How to calculate the trade-off between objectives in multi-objective optimization?

I'm trying to solve an OR problem written using pulp framework , with gurobi, in Linux , but I'm not able to solve it

How to measure the tightness of MILP models?

Have we understood the limitations of the Simplex method on nonlinear programs?

Linearizing $x^2/(1-x)$ by partitioning the interval $0<x\le X$

Why is open source operations research software so far behind open source statistics and machine learning software?

How to say to Gurobi solver with Python API to start from a given solution?

Assistance in formulating binary constraint(s)

Tuning the coefficients of an objective function of LP

How to find the optimal solution of a convex program given all KKT points?

gurobipy.GurobiError: Second argument should be a list of Var

Setting up Branching Priority for GUROBI in Pyomo

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

Mixed Integer Programming - How to model the dependency of two variables in an objective function

Recommendations for OM blogs

Link a binary variable to continuous variable in Java Gurobi

Are there explainability approaches in optimization?

Best practices regarding using "aggregated variables" in MIP

How to get an extreme ray of an LP from Gurobi

Are there any standard "tests" that determine if a model will not optimize / no solution?

Issue in solving a large scale MIQP problem

How to obtain the sensitivity analysis of correlated data?

How to evalute the quality of a solver (beyond solution quality and time efficiency)?

Nonlinear integer (0/1) programming solver

Output of binary variable greater than one

How to improve the quality of code in OR?

Partial derivative of LP solution $(x_1 , \ldots, x_n)$ w.r.t. $x_i$ or $a_i$

Where to search for PhD level jobs in OR?

How do we decide/plan an SLA for an NP-hard optimization process running in production?

Are fuzzy sets appreciated by OR community?