Support Vector Machines for Unbalanced Multicategory Classification

Table 1

The within group error rates of the weighted SCAD SVMs in the unbalanced case with proportion 1 : 2 : 2.

	CLSC	MWGE
Equal weights	0.891 0.119 0.104	0.836 0.121 0.105
	(0.185 0.092 0.029)	(0.248 0.092 0.025)
Proportional weights	0.176 0.164 0.199	0.141 0.184 0.238
	(0.085 0.077 0.112)	(0.096 0.063 0.143)
Adaptive weights	0.092 0.240 0.422	0.070 0.298 0.471
	(0.035 0.167 0.290)	(0.025 0.188 0.283)