WSF2: A Novel Framework for Filtering Web Spam

Table 7

AUC results for C5.0 and SVM classifiers working together with regular expressions.

	Class-imbalance ratio
	1 : 17	1 : 8	1 : 4	1 : 2	1 : 1
C5.0	0.562	0.649	0.651	0.648	0.573
SVM	0.534	0.590	0.602	0.604	0.624
C5.0 + SVM	0.579	0.658	0.713	0.684	0.646
C5.0 + SVM + REGEX	0.673	0.768	0.798	0.759	0.736