A New Approach of Disaster Forecasting Based on Least Square Optimized Neural Network

Table 2

Sample quantization table.

Name	Mining depth	Mining thickness	Coal seam dip	Roof management	Geological structure	Strength of coal and rock	Mining method	Impact situation
1	0.45	0.50	0.83	0.10	0.40	0.40	0.10	Weak impact
2	0.36	0.18	0.15	0.40	0.10	0.40	0.70	General impact
3	1.00	1.00	0.74	0.40	1.00	0.70	0.40	General impact
4	0.65	0.23	0.51	0.40	0.70	0.70	0.10	Weak impact
5	0.70	0.73	0.47	0.70	0.70	0.70	0.70	General impact
6	0.04	0.36	0.89	0.10	1.00	0.70	0.10	Micro impact
7	0.48	0.27	0.51	0.70	0.10	0.40	1.00	High impact
8	0.82	0.82	0.60	0.10	0.70	0.40	0.10	Weak impact
9	0.43	0.82	0.94	1.00	1.00	1.00	1.00	High impact
10	0.43	0.32	0.32	1.00	0.10	0.10	0.10	Weak impact
11	0.34	0.27	0.32	0.70	0.10	0.40	0.70	General impact
12	0.47	0.00	0.30	0.70	0.40	0.40	0.10	Weak impact
13	0.58	0.55	0.32	0.40	0.40	0.70	0.70	General impact
14	0.52	0.36	0.32	0.40	0.70	0.40	1.00	General impact
15	0.38	0.59	1.00	0.10	1.00	0.70	0.40	Weak impact
16	0.63	0.64	0.38	0.70	0.70	0.70	0.70	General impact
17	0.40	0.36	0.43	0.40	1.00	0.10	0.70	Weak impact
18	0.51	1.00	0.09	0.10	0.70	0.40	0.10	Micro impact
19	0.38	0.18	0.15	0.40	0.10	0.10	0.40	Weak impact
20	0.26	0.18	0.17	0.40	0.10	0.40	0.70	Weak impact
21	0.50	0.32	0.96	0.70	0.40	0.70	0.40	General impact
22	0.47	0.18	0.43	0.70	0.70	0.40	0.40	Weak impact
23	0.34	1.00	0.30	1.00	0.70	0.40	1.00	General impact
24	0.49	0.09	0.00	0.10	0.10	0.10	0.10	Micro impact
25	0.42	0.27	0.34	0.70	0.40	0.70	0.70	General impact
26	0.32	2.36	0.21	0.70	0.10	0.70	1.00	General impact
27	0.00	0.45	0.89	0.10	1.00	0.40	0.40	Micro impact
28	0.81	0.82	0.53	0.70	0.70	1.00	1.00	High impact
29	0.53	0.18	0.38	0.10	0.40	0.10	0.10	Micro impact
30	0.77	0.45	0.53	0.40	0.70	0.40	0.70	General impact