Study on Prediction of Coal-Gas Compound Dynamic Disaster Based on GRA-PCA-BP Model

Table 3

Partial correlation coefficient and correlation degree.

Correlation coefficient
Number
1	0.9046	0.7433	0.7433	0.7433	0.9032	0.8876	0.9272	0.9975	0.9713	0.8737	0.8737	0.8955	0.8912
2	0.9116	0.7433	0.7405	0.7433	0.8842	0.8876	0.9272	0.9975	0.9354	0.8737	0.8489	0.9704	0.8696
11	0.9161	1	0.7433	0.7433	0.9032	0.9255	0.8566	0.8904	0.7433	0.9493	0.7433	0.8447	0.9503
12	0.9161	1	0.7433	0.7433	0.9032	0.9255	0.8566	0.8904	0.7433	0.9493	0.7433	0.8605	0.8199
20	0.8863	0.7433	0.7433	0.7433	0.9032	0.9723	0.9272	0.8904	0.7433	0.86	0.7433	0.9177	0.8749
21	0.9028	0.5915	0.7433	0.7433	0.8842	0.9179	0.9272	0.9325	0.9185	0.9153	0.9779	0.8996	0.8912
29	0.9064	0.7433	0.7433	0.9434	0.9032	0.9585	0.9272	0.9552	0.8863	0.8737	0.9893	0.909	0.8643
30	0.83	1	1	0.765	0.8077	0.8627	0.7376	0.8182	0.8637	0.6388	0.8329	0.9061	0.9053
38	0.8955	0.7433	0.7433	0.7433	0.9032	0.8959	0.9272	0.9437	0.8022	0.9808	0.9178	0.9208	0.8592
39	0.7361	0.7433	0.4035	0.5389	0.8077	0.7681	0.7894	0.84	1	0.8329	1	0.7557	0.8885
Correlation degree
0.8804	0.8317	0.7346	0.7556	0.8717	0.8923	0.8712	0.8988	0.8197	0.8717	0.8117	0.8531	0.9077
Correlation degree ranking
4	9	13	12	6	3	7	2	10	5	11	8	1