Figure 11
From: A novel combined intelligent algorithm prediction model for the risk of the coal and gas outburst

Fitness curve of multiple models. (a) Fitness curve of the RF-GWO-SVM model; (b) fitness curve of the RF- IGWO-SVM model.
From: A novel combined intelligent algorithm prediction model for the risk of the coal and gas outburst

Fitness curve of multiple models. (a) Fitness curve of the RF-GWO-SVM model; (b) fitness curve of the RF- IGWO-SVM model.