RobPratt's user avatar
RobPratt's user avatar
RobPratt's user avatar
RobPratt
  • Member for 4 years, 8 months
  • Last seen this week
  • NC, USA
2 votes
Accepted

0-1 Knapsack optimization problem

3 votes
Accepted

How to modify master problem and individual sub problems in column generation?

2 votes

Problem 8.17 of Korte and Vygen

3 votes

Lagrangian Relaxation Lower Bound exceeds the Upper bound and the Optimal solution

2 votes
Accepted

Assignment of colored boxes to groups

3 votes
Accepted

How to model the following Constraint

6 votes
Accepted

Scipy.optimize can't get correct answer when objective is Piecewise Linear Function and Equality Constraint

2 votes

Help with formulating the objective function of my subproblem

1 vote
Accepted

How to represent "if $y_{it} = 1$ and $z_{jt'}=1$ then $x_{ij,t+t'}=1$"

3 votes
Accepted

How to Group IDs Based on the Difference of Each ID’s Min and Max Value?

2 votes
Accepted

Grouping of a list of elements in fixed order to maximize the total return of all the groups

5 votes
Accepted

Replace the constraint using ==> by a linear formulation

3 votes
Accepted

How to evaluate the quality of a solution obtained using the price-and-branch method for an IP problem?

7 votes

Algorithm needed to find optimum area of 2-dimensional data set

3 votes

How to modify a model to be cyclic?

4 votes

How to model weekend constraints in a nurse rostering problem?

7 votes
Accepted

How to set up a constraint that represents a median?

1 vote
Accepted

Creating a decision variable that is the sum of other variables in PuLP

0 votes
Accepted

Determine optimal method for choosing products based on perimeter and number of zones

2 votes
Accepted

Column generation for solving minimum cost multicommodity flow problem with additional edge disjoint constraints

1 vote
Accepted

Question on Column generation

1 vote
Accepted

Solving a weighted XOR-SAT problem

3 votes
Accepted

Which of these formulations has the tightest linear relaxation?

1 vote

Grocery Store Problem

4 votes
Accepted

Optimization problem with the Harmonic number

2 votes
Accepted

MIP formulation for a lower semi-continuous function

3 votes
Accepted

Termination criterion for the Phase 1 algorithm in column generation

2 votes
Accepted

Workforce scheduling problem

0 votes

Single Facility Problem

2 votes

Travelling salesman problem

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