3
votes
Accepted
Can a logical expression be added to the objective function of a model in docplex?
We can use a "big M" approach, assuming that you can find a positive constant $M$ such that $\vert y_{jk}-y_{ik} \vert \le M$ for all $k\in K$ and $(i,j)\in V.$
Introduce new binary ...
- 37.9k
3
votes
Dual problem in IBM CPLEX
If the primal LP problem suffers from degeneracy, I believe dual simplex may be faster. You might try using the barrier method to solve the (primal) LP. In cases where the LP has degeneracy issues, I ...
- 37.9k
2
votes
Accepted
Modifying and re-optimizing a model using CPLEX Python API
You can do incremental changes
https://github.com/AlexFleischerParis/zoodocplex/blob/master/zooincremental.py
...
- 4,000
1
vote
Using CPLEX academic version with Pyomo on MacOS
To run CPLEX on MacOS use the code:
solver = SolverFactory('cplex', executable = '/Applications/CPLEX_Studio2211/cplex/bin/x86-64_osx/cplex')
1
vote
Updating constraint set rhs in docplex
I think the method you pointed out would be as follows:
...
- 8,450
1
vote
Modifying and re-optimizing a model using CPLEX Python API
Now with the CPLEX Matrix API you can do the same kind of changes of course.
Let me start with the example from
https://medium.com/@alexfleischer_84755/optimization-simply-do-more-with-less-zoo-buses-...
- 4,000
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