TABLE 2.
Statistics for distinctness within the hierarchical sequence of nested random forest regression models as evaluated by decrease of RMSE and increase of R 2
| Model | RMSE statistics a | R 2 statistics b | ||||||
|---|---|---|---|---|---|---|---|---|
| RMSE % (SD) | t | df | p | R 2 | adj. R 2 | F | p | |
| Melanopic | 18.03 (0.16) | 0.63 | 0.63 | |||||
| Melanopic + Duration | 16.09 (0.12) | 65.94 | 73.28 | <.0001 | 0.70 | 0.70 | 75.35 | <.0001 |
| Melanopic + Duration + Pupil Dilation | 15.41 (0.15) | 23.66 | 76.89 | <.0001 | 0.728 | 0.725 | 34.54 | <.0001 |
| Melanopic + Duration + Pupil Dilation + S‐cone | 15.19 (0.19) | 6.91 | 78.92 | <.0001 | 0.744 | 0.741 | 20.25 | <.0001 |
| Melanopic + Duration + Pupil Dilation + S‐cone + L‐cone | 15.21 (0.16) | −1.07 | 82.00 | .29 | 0.747 | 0.743 | 3.84 | .10 |
| Melanopic + Duration + Pupil Dilation + S‐cone + L‐cone + M‐cone | 15.27 (0.15) | −1.55 | 80.90 | .13 | 0.751 | 0.746 | 5.20 | .05 |
a
56 repetitions of 10‐fold CV, Welch Two Sample t‐test.
b
Mean R 2 of 50 RF repetitions, F‐test df = (1324).