Long-Term Room and Pillar Mine Production Planning Based on Fuzzy 0-1 Linear Programing and Multicriteria Clustering Algorithm with Uncertainty

Table 7

The transformation of linguistic variables.

Linguistic variable	Triangular fuzzy number of metal price ($/t)		Membership function	Range code value
	Lead	Zinc
VVL	(963 1176 1433)	(1101 1236 1526)
VL	(1433 1689 1776)	(1526 1816 1915)
L	(1776 1863 1963)	(1915 2014 2095)
M	(1963 2064 2134)	(2095 2176 2260)
H	(2134 2205 2293)	(2260 2344 2519)
VH	(2293 2381 2523)	(2519 2695 2970)
VVH	(2523 2665 3080)	(2970 3244 3533)