Comparison of Fuzzy Clustering Methods and Their Applications to Geophysics Data

Figure 12

Representative results of various membership function values: (a) 𝐴=0.75, 𝐵=3, 𝐶=−4. These values were used in the study because they provide a good balance of eliminating outliers and high cluster compactness; (b) 𝐴=0.25, 𝐵=1, 𝐶=−6. These values were not used because of low, noncompact clusters (lowering individual 𝐴, 𝐵, or 𝐶 values gave similar results); (c) 𝐴=1.25, 𝐵=5, 𝐶=−2. These values were not used because too many points remained (raising individual 𝐴, 𝐵, or 𝐶 values gave similar results).

(a)

(b)

(c)