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For questions about solving Operations Research problems using the Python programming language.

2 votes
1 answer
377 views

How to professionally write a constraint, where some variables take certain values of index ...

I am using Pyomo's concrete model to model a MILP mathematical model, coming from multiproduct pipeline scheduling. Some of our continuous variables are: w[i,t], R[i,t], D[i,t]. Fixing the indices …
Sik Sik's user avatar
  • 143
6 votes
Accepted

No executable found for solver 'ipopt

One of the most important things to keep in mind is that we should install Pyomo in another environment than the base environment together with its solvers. However, this is not enough to use Pyomo pr …
Sik Sik's user avatar
  • 143
2 votes
1 answer
6k views

No executable found for solver 'ipopt

I know that there are some questions concerning this type of error, for example, this link. I first installed the latest version of ipopt through command line into my Pyomo environment and got the "No …
Sik Sik's user avatar
  • 143
3 votes
1 answer
543 views

Can we take the constraints from one model and plug them into the other model in pyomo?

I am implementing data-driven robust optimization methodology introduced in this article in python. …
Sik Sik's user avatar
  • 143