Table 1 Observation vs. prediction of watershed-based debris flow in Sichuan by gradient boosting machinea.

From: Assessing Susceptibility of Debris Flow in Southwest China Using Gradient Boosting Machine

 

Observation-N

Observation-Y

Accuracy (%)

Prediction-N

1514

259

85.4

Prediction-Y

186

515

73.5

Total

1700

774

82.0

  1. aN means there did not exist debris flow, and Y represents there existed debris flow.