<p>Δ correlation is computed as the mean difference in correlation coefficient compared to the STM algorithm. Δ var. exp. in % is computed as the mean relative improvement variance explained (<i>r</i><sup>2</sup>). Note that since variance explained is a nonlinear function of correlation, algorithms can be ranked differently according to the two measures. All means are taken over <i>N</i> = 32 recordings in the test set, except for training correlation, which is computed over <i>N</i> = 60 recordings in the training set.</p
