Table 2.

Segmentation results for the UZ Gent MP-MRI dataset when using kmeans ++ initialization. Mean Dice-score ± standard deviation is reported for active tumor, necrosis, edema, the tumor core (active tumor + necrosis) and the whole tumor (core + edema). The number of undetected cases is reported for active tumor, necrosis and edema.

		NMF			Clustering
		HALS	Convex	hNMF	FCM	GMM	SC
Dice [%]	Tumor	66 ± 13	61 ± 22	70 ± 14	61 ± 21	66 ± 19	69 ± 14
	Necrosis	56 ± 28	54 ± 31	62 ± 25	41 ± 33	58 ± 32	66 ± 33
	Edema	33 ± 24	37 ± 27	46 ± 22	38 ± 23	36 ± 26	43 ± 24
	Core	76 ± 11	73 ± 15	79 ± 12	71 ± 19	77 ± 18	76 ± 16
	Whole	78 ± 13	82 ± 10	86 ± 8	78 ± 17	85 ± 10	85 ± 10
Undetected [#]	Tumor	0/21	1/21	0/21	0/21	0/21	0/21
	Necrosis	1/12	2/12	0/12	3/12	2/12	2/12
	Edema	4/15	4/15	2/15	3/15	3/15	3/15