Fig. 4.

The ROC curves obtained for the PDM-based MIMO model with the pruned ANFs of Figure 3 (red line) and for the kernel-based MIMO model (blue line) for each of the four output neurons. Overall, the two types of MIMO models exhibit comparable performance (with a slight advantage for the PDM model), although the complexity of the PDM-based model is significantly reduced. The axes show the numbers of the true-positives (ordinate) and false-positives (abscissa) to facilitate interpretation.