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From 1D to 3D Membership:Sphericalfuzzy Sets

Kutlu Gündoğdu, Fatma; Kahraman, Cengiz (2019-09)

All the extensions of ordinary fuzzy sets with three dimensional membership functions such as intuitionistic fuzzy sets (IFS), Pythagorean fuzzy sets (PFS), and neutrosophic fuzzy sets (NFS) aim at defining the judgments ...

Spherical fuzzy sets and spherical fuzzy TOPSIS method

Kutlu Gündoğdu, Fatma; Cengiz, Kahraman (Journal of Intelligent Fuzzy Systems, 2019)

All the extensions of ordinary fuzzy sets with three dimensional membership functions such as intuitionistic fuzzy sets (IFS), intuitionistic fuzzy sets of second type (IFS2), and neutrosophic fuzzy sets (NFS) aim at ...