Bipectrum emulations at redshifts z = 0 (top left), z = 0.5 (top right), z = 1 (bottom left), and z = 10 (bottom right) for model regressions with a single parameter, Ω_m = 0.31. The top panel of each plot shows bispectra for our different emulation variants, extremely randomized trees (ET), neural networks (NN), Random Forests (RF), and support vector machines (SVM). The bottom panel in each plot shows the bispectra ratios from emulations, B_E(θ), and the B_S(θ) the ground truth simulation.