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

Table 2

Correlations of various factors.

Factor
Correlation		1.000	0.664	-0.198	-0.432	-0.705	0.295	-0.046	0.120	0.437
		0.664	1.000	0.081	-0.402	-0.592	0.285	-0.220	0.114	0.259
		-0.198	0.081	1.000	0.045	0.078	-0.171	0.092	0.197	0.068
		-0.432	-0.402	0.045	1.000	0.717	-0.252	0.151	-0.527	-0.547
		-0.705	-0.592	0.078	0.717	1.000	-0.250	0.339	-0.233	-0.601
		0.295	0.285	-0.171	-0.252	-0.250	1.000	0.420	0.633	0.498
		-0.046	-0.220	0.092	0.151	0.339	0.420	1.000	0.433	0.088
		0.120	0.114	0.197	-0.527	-0.233	0.633	0.433	1.000	0.595
		0.437	0.259	0.068	-0.547	-0.601	0.498	0.088	0.595	1.000