Results from “Branch-length heterogeneity space (BL-space)” experiments (see Table 1).

The name of each experiment follows this convention: experiment_mixb_{number of taxa}_{substitution model}. The “mixb” denotes mixture beta distribution. The following values were computed for each branch and tree length: mean squared error (MSE); mean absolute error (MAE); Spearman’s correlation coefficient (rho); Spearman’s correlation test P value (P_rho); bias (Bias); Kolmogorov-Smirnov test statistic D (D); Kolmogorov-Smirnov test P value (P_D). CNN = convolutional neural network; CNN-ROE = convolutional neural network–regression of observed on estimated values; MLP = multilayer perceptron; MLP-ROE = multilayer perceptron–regression of observed on estimated values; ML = maximum likelihood.
(XLSX)