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

Table 9

Results comparison for clustering index (Se and Sp) for CSF tissue by FCM, PCM, PFCM, and HPFCM, with different noises (0%, 1%, 3%, 5%, 7%, and 9%), using Brainweb data sets.

Noise	FCM		PCM		PFCM		HPFCM
	Se	Sp	Se	Sp	Se	Sp	Se	Sp
0%	85.77	89.39	84.32	86.28	94.98	95.19	95.27	96.28
1%	82.98	87.22	83.76	85.79	94.54	95.00	95.21	96.10
3%	80.55	85.02	83.02	84.86	93.63	94.26	94.77	95.93
5%	74.10	81.66	82.19	82.79	92.81	92.56	94.24	95.31
7%	71.66	80.32	81.63	81.99	91.42	91.61	93.72	94.35
9%	66.87	78.69	78.94	80.28	90.70	90.13	92.91	93.89