Table 3. Accuracy of coppice detection from tree release (GA method) compared to historical coppice records (± 5 years).
Positive predictive power (PPP) express probability of correct detection and is the inverse of the commission error accounting for false detections, whereas sensitivity is the inverse to the omission error accounting for undetected coppice events.
| Site | Coppicing detected (major/moder.) | False detection (major/moder.) | Coppicing not detected | PPP | PPP (major release) | Sensitivity |
|---|---|---|---|---|---|---|
| Mramor I. | 9/4 | 4/6 | 17 | 57% | 75% | 43% |
| Mramor II. | 8/8 | 3/9 | 14 | 57% | 73% | 53% |
| Mramor III. | 10/3 | 6/7 | 16 | 50% | 63% | 45% |
| Kobyla | 5/10 | 0/11 | 28 | 58% | 100% | 35% |
| Koda | 26/10 | 5/13 | 26 | 67% | 82% | 58% |