Contour plots for dimension vs evaluation budget.  a-b) ZDT1. c-d) ZDT2. e-f) ZDT3. g-h) MW7. The colour bar illustrates the mean cumulative HV score with respect to cumulative evaluations, over a total evaluation budget of 100 iterations x 8 points per batch. Results are averaged over only 5 runs due to high computational cost of searching over many dimensions. The results here show that qNEHVI is a far superior method when looking at only HV as a performance metric.