• Naïve-replace: replace each infeasible measurement with the worst objective function value observed thus far, i.e. for a minimization problem, infeasible measurement ỹ ← max y∈D K f {y i } K-L i=1 . This baseline strategy has previously been referred to as the floor padding trick. • Naïve-ignore: the FIA hybrid surrogate strategy is used with t = 1000. This will fully bias the acquisition function toward α(x), effectively disregarding the contribution of the classification surrogate.