A Prediction Model for Top-Coal Drawing Capability in Steep Seams Based on PCA–GRNN

Table 4

Scoring coefficients of PCs.

	PCs
	0.231	-0.017	-0.251
	0.251	-0.097	0.014
	0.022	-0.042	0.799
	-0.230	-0.028	-0.140
	-0.301	0.084	-0.013
	-0.007	0.368	-0.260
	-0.204	0.399	-0.085
	0.013	0.350	0.222
	0.150	0.182	0.126
	0.231	-0.017	-0.251