Figure 3: a)Decis ion region in which the three minority class samples (shown by ’+’)r eside
after building a decision tree. This decision region is indicated by the solid-line
rectangle. b)A zoomed-in view of the chosen minority class samples for the same
dataset. Small solid-line rectangles show the decision regions as a result of oversampling
the minority class with replication. c)A zoomed-in view of the chosen
minority class samples for the same dataset. Dashed lines show the decision region
after over-sampling the minority class with synthetic generation.