Table 4.

Results comparison. Comparison between different methods for model order selection in gene expression data analysis

Methods	Class. risk (Lange et al. 2004)	Gap statistic (Tibshirani et al. 2001)	Clest (Dudoit and Fridlyand 2002)	Figure of Merit (Levine and Domany 2001)	Model Explorer (BenHur et al 2002)	MOSRAM	"True" number k
Data set
Leukemia (Golub et al. 1999)	k = 3	k = 10	k = 3	k = 2, 8, 19	k = 2	k = 2, 3	k = 2, 3
Lymphoma (Alizadeh et al. 2000)	k = 2	k = 4	k = 2	k = 2, 9	k = 2	k = 2	k = 2, (3)