Why occ looks like b-h curve?

Answer 1

The Operating Characteristic Curve (OCC) resembles a "b-h" shape because it reflects the trade-off between true positive rates (sensitivity) and false positive rates in a binary classification system. Initially, as the threshold for classification is lowered, both true positives and false positives increase, creating the upward slope. However, as the threshold continues to decrease, the rate of true positives may plateau while false positives rise more sharply, resulting in the "b-h" shape. This curve helps to visualize the performance of a classifier across different decision thresholds.