Fig. 4.

Class membership is determined according to the distance between the projected class and the new red sample. The blue, yellow, and green classes are mapped into one point for each class in the mapped class. The assignment of the new red sample is determined according to the distance between its projection and the projection of the other classes (d1, d2, d3). The distance d2 is the shortest distance to the red class. Therefore, it is more probable that the red sample belongs to the yellow class. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article).