Mixed parameter space with one discrete parameter \(x_1 \in \{1, 2, 3, 4, 5\}\) and two numerical parameters \(x_1, x_2 \in [0, 1]\). The function is defined as follows: $$ f(\mathbf{x}) = \\ \sin(2\pi x_3 - \pi) + 7 \sin^2(2 \pi x_2 - \pi) \, if \, x_1 = 1 \\ \sin(2\pi x_3 - \pi) + 7 \sin^2(2 \pi x_2 - \pi) + 12 \sin(2 \pi x_3 - \pi) \, if \, x_1 = 2 \\ \sin(2\pi x_3 - \pi) + 7 \sin^2(2 \pi x_2 - \pi) + 0.5 \sin(2 \pi x_3 - \pi) \, if \, x_1 = 3 \\ \sin(2\pi x_3 - \pi) + 7 \sin^2(2 \pi x_2 - \pi) + 8.0 \sin(2 \pi x_3 - \pi) \, if \, x_1 = 4 \\ \sin(2\pi x_3 - \pi) + 7 \sin^2(2 \pi x_2 - \pi) + 3.5 \sin(2 \pi x_3 - \pi) \, if \, x_1 = 5. $$
makeSwiler2014Function()[smoof_single_objective_function]