Fig. 2

Schematic of the classifications of all 2⁸ (= 256) feature combination 7NN classifiers. We show a a uniform instance, c a nonuniform instance, e a boundary instance. Each heatmap row represents one feature subset 7NN classifier (increasing in subset size from top to bottom). Each column represents one of the eight features. Feature subsets not including the column feature are indicated in white; the 7NN classification result for feature subsets including the column feature are shown as Good (blue) or Poor (red). Corresponding radar plots (b, d, f) show the SVs for each instance. Magnitude is represented by radial extent and sign by color (positive as blue and negative as red)