Handling crashes in PSO

[oarcelus]

I am trying to implement a PSO for a model. Sometimes, depending on the combination of input parameters, the model crashes and returns None. How should I handle this case with pymoo? Maybe postprocessing the _evaluate function to give a default value to those cases that crashed?

[blankjul]

Yes, I would sorround the third-party code with a try-catch and then set the objective to a large value (or introduce a inequality constraint to be 1 if failed and 0 if it succeeded. both will work)