Table 7.

SVM SR for four-cluster classification

	Two-level approach		Three-level approach
C*	[C1+C3]&	[C1+C ∗]	[(C1+C ∗)+C3]	[(C1+C3)+C ∗]
	&[C ∗+C10]	&[C3+C10]	&[C10]	&[C10]
C4	0.807	0.750	0.856	0.838
C2	0.839	0.805	0.847	0.825