Multiple Kernel Dimensionality Reduction via Ratio-Trace and Marginal Fisher Analysis

Table 1

Description of benchmark datasets.

Datasets	Dimensions	# of samples	# of classes
Ionosphere	33	351	2
Sonar	60	208	2
USPS	256	3000	10
Isolet	617	900	3
MINIST	784	600	3
Yale	1024	165	15
PIE	1024	680	4
ORL	1024	400	40
COIL-20	1024	1440	20