Figure 6.

Separation between active and inactive samples for the binary IC₅₀-PLS-DA classification model. Green samples are the active class, orange the inactive. On the y-axis are reported the calculated response for the activity class calculated by the PLS-DA technique (X score × Y weights) for each EO (x-axis) [24] (Table 2). Samples at the top of the plot were assigned to active class while those at the bottom were classified as inactive. Calculated response classis values between 1 and 0 indicate active samples, while values lower than 0 indicate samples belonging to the inactive class.