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Description:
I am working on a problem where I need to create constraints with a right-hand side that has two indices, as shown in the following formulation:
$$
\sum_j c_j y_{ij} \le b_{ij} \qu…
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I'm experiencing a problem where I run the same model multiple times, but I get different solving paths for same solver each time. Even though the objective function values are the same, the decision …
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I tried testing the example of max_coverage() function, as follows:
```r
require(maxcovr)
require(dplyr)
york_selected % filter(grade == "I")
york_unselected % filter(grade != "I")
# Try to ca…
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at JuMP dev the new syntax for parameters was shown and exists since JuMP 1.14. We should refactor some of the parameter handling in PSI that could benefit from better syntaxes.
cc. @odow
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Lately I have encountered a problem that Gurobi.jl will crush the machine when the number of variables exceeds 2147483647. I have some discussions with @odow, see [here](https://discourse.julialang.or…
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Trying to use the `setvarLB!`, `setvarUB!` `getvarLB`, `getvarUB` functions in a callback but couldn't find a definition in the docs nor in MathProgBase source code.
What's the signature, should thes…
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### What and Why
This causes problems with the optimisation if something is in 100000 GW and something else is in 10 MW.
Probably in pre-processing.
### Possible Drawbacks
_No response_
…
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Hi folks,
Thanks for providing this example of how to apply COSMOS to viral pathogenesis data. I am trying to reproduce your pipeline, and I got as far as runCarnival, but the problem now is that …
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I am working with a large optimization model using Plasmo.jl, but I encountered a performance issue when calling `set_to_node_objectives(graph)` on a graph with many nodes.
```julia
graph = Opti…
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Example: https://github.com/Argonne-National-Laboratory/DSP/blob/master/examples/cpp/farmer.cpp#L69
When the upper bound is set to `1e+20`, the finite lower bound (e.g. `200`, `240`) is ignored.
…