Efficacious End User Measures—Part 1: Relative Class Size and End User Problem Domains

Figure 10

The normalized accuracy rate and F-score seem to be relatively invariant to rCS. Not only is the value relatively constant, but the boundary stays constant as well.

(a) Contour graph of normalized Accuracy rate. The reader may note that, other than the contour values, the graph is almost exactly the same as the Youden index graph

(b) Contour graph of normalized F-score. As with Youden index and normalized accuracy rate, the optimum boundary follows the “minimum error boundary”