Table 1. Eight cancer gene expression datasets.

Dataset	Source	#Subtypes(k)	#Samples(n)	#Genes(d)
Breast	[50]	4	49	1213
DLBCLA	[50]	3	141	661
Leukemia	[22]	6	248	985
NovartisBPLC	[22]	4	103	1000
Pomeroy2002v2	[51]	5	42	1379
Ramaswamy2001	[51]	14	190	1363
Risinger2003	[51]	4	42	1771
Su2001	[51]	10	174	1571

#Subtypes is the number of cancer subtypes (or clusterings), #Sample is the number of samples, and #Genes is the number of genes.