Unsupervised Approach Data Analysis Based on Fuzzy Possibilistic Clustering: Application to Medical Image MRI

Table 6

Regions description.

	Description	Index
Region 1	(∁𝐴∩∁𝐵)	TN
Region 2	(𝐴⧵(𝐴∩𝐵))	FP
Region 3	(𝐴∩𝐵)	TP
Region 4	(𝐵⧵(𝐴∩𝐵))	FN
∁𝐴	Complement of region (𝐴)
∁𝐵	Complement of region (𝐵)
∩	Operation of intersection
∖	Operation of difference