Selection of Compatible Coal Seam for Methane Drainage Operation Based on Uncertain Geological Conditions: A Hybrid Fuzzy Approach

Table 3

Some of the most important fuzzy aggregation operators (T-norms).

Researcher (s)	Year	Presented operators
Yager [62]	1978
Dubois and Prade [59]	1980
Kaymak [61]	1998