Questions tagged [mip]
The mip tag has no summary.
5 questions
0
votes
1
answer
168
views
Workforce scheduling MIP problem size reduction
A workforce scheduling problem MIP formulation
Decision variable $x_{ij} = 1$ if shift $i$ is assigned to worker $j$, $0$ otherwise.
Objective is a sum of multiple objectives
Maximize demand coverage
...
1
vote
0
answers
85
views
How does Gurobi reduce number of IntInf variables?
Following is the log of my MIP problem:
...
0
votes
2
answers
155
views
Modeling a condition in a worker shift assignment problem MIP
In a worker shift assignment problem, let's suppose there are some unassigned shifts for a day (e.g., morning 8 to 11 is an unassigned shift that any qualified worker can take) and some additional ...
1
vote
1
answer
131
views
Indicator constraint
Assuming $x_1, x_2, x_3$ are binaries, what implementation is preferable?
$x_1 + x_2 + x_3 \le 1$
or as indicator constraint
$IF \quad x_1=1 \quad THEN \quad x_2 + x_3 = 0, $
$IF \quad x_2=1 \quad ...
1
vote
2
answers
103
views
Indicator Constraints - Cplex 20.1
Is there a possibility to forbid Cplex 20.1.0.0 to internally transform an indicator constraint into a Big-M constraint?
DeepSeek proposes using Cplex-Parameters that do not exist, so no help here.