Assessment of Near-Earth Asteroid Deflection Techniques via Spherical Fuzzy Sets

Table 5

SFS TOPSIS (SWGM) ranking of alternatives as described in the first analysis of sensitivity. The weights of the criteria were chosen to be those calculated from the information provided by the group of experts. The “Diff.” column contains the differences between the closeness ratios (in absolute value) from pairs of alternatives.

SFS TOPSIS (SWGM) ranking of alternatives (criteria weights from experts)
Alternative	Closeness ratio	Rank	Diff.
(KI)	0.00	1	–
(IBD)	3.24	2	3.24
(EGT)	4.81	4	1.57
(LA)	3.86	3	0.95