Prediction of Grade Classification of Rock Burst Based on PCA-SSA-PNN Architecture

Table 3

Prediction results of various rock burst grades.

Evaluation of prediction results	Rock burst grades
	I	II	III	IV
Accuracy ratio	100%	100%	88.89%	100%
Overprediction ratio	0%	0%	11.11%	0%
Underprediction ratio	0%	0%	0%	0%
Error ratio	0%	0%	11.11%	0%
Average accuracy ratio	92.86%
Average overprediction ratio	7.14%
Average underprediction ratio	0%
Average error ratio	7.14%