The errors of the optimization objectives (i.e. density and RCE) using the original loss function (equation ( )) are visualized in figure . The errors for the density (blue line) and RCE (orange line) are shown depending on the overall weight that is assigned to the density weighting factor (i.e. the inter-domain balancing). Consequently, an x-axis value of 20% stands for the "20-80" balancing where 80% of the total weight is distributed among the RCE weighting factors and 20% is assigned to the density weighting factor.