Brittleness Risk Evaluation of Mine Safety Based on Brittle Relational Entropy

Table 4

Corresponding brittleness entropies and weighty coefficients.

Brittleness entropy		Same	Fluctuating	Opposite	Relational entropy^a
H-S	Values	0.363	0.334	0.289	0.006 ± 0.201 i
		0.363^1/2	0.334^1/3	0.289^1/4
M-S	Values	0.353	0.322	0.299	−0.012 ± 0.221 i
		0.353^1/2	0.322^1/3	0.299^1/4
E-S	Values	0.361	0.340	0.126	0.142 ± 0.237 i
		0.361^1/2	0.340^1/3	0.126^1/4
O&M-S	Values	0.356	0.301	0.244	−0.041 ± 0.202 i
		0.356^1/2	0.301^1/3	0.244^1/4

^aj = −1, i∈[0, 1]; : weighty coefficients.