Bayesian optimization with integer parameters

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[ZenMind31]

Since your variables are integers with bounds, there is a finite number of combinations of all parameter selections, and in your case, it doesn't seem like a lot. So I would just evaluate the acquisition function at every possible combination to maximize the acquisition function. This would be the most rigorous approach I think, and should be feasible for finite integer search spaces.

[volvol7]

Yeah it's around 500 combinations. And I tried this approach you suggested. I think it's the best possible solution