Multiview Ensemble Method for Detecting Shilling Attacks in Collaborative Recommender Systems

Table 5

Recall of seven methods under eight attacks.

Filler size		3%				5%
Attack size		3%	5%	10%	12%	3%	5%	10%	12%
Random attack	MEL-once	0.96	0.97	0.96	0.98	0.98	0.97	1	1
	MV-SVM	0.98	0.98	0.97	0.98	1	0.98	0.98	1
	SVM-TIA	0.7	0.79	0.81	0.9	0.8	0.83	0.85	0.89
	RAdaBoost	0.96	0.97	0.96	0.98	0.97	0.96	0.98	0.98
	RF-13	0.96	0.95	0.95	0.98	0.96	0.96	0.97	0.98
	DWT-SVM	0.82	0.83	0.89	0.9	0.82	0.85	0.89	0.91
	MV-EDM	1	1	1	1	1	1	1	1
Average attack	MEL-once	0.97	0.98	1	1	0.97	0.98	1	1
	MV-SVM	0.98	0.97	0.98	1	1	0.98	0.98	1
	SVM-TIA	0.71	0.82	0.84	0.9	0.8	0.82	0.89	0.91
	RAdaBoost	0.97	0.98	0.97	0.97	0.98	0.95	0.98	0.97
	RF-13	0.97	0.98	0.96	0.96	0.95	0.95	0.95	0.97
	DWT-SVM	0.82	0.83	0.89	0.92	0.82	0.85	0.93	0.92
	MV-EDM	1	1	1	1	1	1	0.98	1
AoP attack	MEL-once	0.97	0.97	0.99	0.99	0.98	0.97	0.99	0.98
	MV-SVM	0.98	0.98	0.98	0.97	0.98	0.98	0.97	0.98
	SVM-TIA	0.52	0.58	0.68	0.74	0.6	0.59	0.68	0.71
	RAdaBoost	0.98	0.93	0.97	0.9	0.9	0.94	0.93	0.88
	RF-13	0.96	0.95	0.96	0.95	0.94	0.95	0.94	0.96
	DWT-SVM	0.76	0.78	0.82	0.83	0.73	0.77	0.8	0.82
	MV-EDM	1	1	0.99	0.99	1	1	1	1
Shifting attack	MEL-once	0.97	0.98	1	1	0.98	1	1	1
	MV-SVM	0.96	0.98	0.98	0.98	0.96	0.98	0.97	0.98
	SVM-TIA	0.76	0.79	0.81	0.84	0.78	0.8	0.87	0.91
	RAdaBoost	0.96	0.96	0.95	1	0.94	0.97	0.96	0.97
	RF-13	0.97	0.95	0.97	0.96	0.95	0.96	0.98	0.96
	DWT-SVM	0.84	0.85	0.9	0.92	0.85	0.88	0.93	0.95
	MV-EDM	1	1	1	1	1	1	1	1
Power item attack	MEL-once	0.95	0.96	0.96	0.97	0.97	0.97	0.98	0.98
	MV-SVM	0.95	0.95	0.97	0.96	0.96	0.96	0.96	0.98
	SVM-TIA	0.47	0.52	0.57	0.58	0.47	0.52	0.57	0.58
	RAdaBoost	0.85	0.86	0.87	0.89	0.95	0.96	0.97	0.98
	RF-13	0.81	0.81	0.84	0.87	0.88	0.91	0.94	0.95
	DWT-SVM	0.28	0.31	0.33	0.37	0.29	0.31	0.34	0.39
	MV-EDM	0.97	0.98	0.99	1	0.97	0.98	0.99	1
Power user attack	MEL-once	0.95	0.98	1	0.97	0.96	0.97	0.98	0.97
	MV-SVM	0.96	0.97	0.98	0.98	0.95	0.98	0.97	0.98
	SVM-TIA	0.14	0.16	0.19	0.21	0.14	0.16	0.19	0.21
	RAdaBoost	0.21	0.23	0.29	0.35	0.21	0.23	0.29	0.35
	RF-13	0.22	0.25	0.27	0.31	0.22	0.25	0.27	0.31
	DWT-SVM	0.12	0.15	0.17	0.18	0.12	0.15	0.17	0.18
	MV-EDM	1	1	1	1	1	1	1	1
Love/Hate attack	MEL-once	0.97	0.98	0.99	0.99	0.98	0.99	0.98	0.99
	MV-SVM	0.96	0.97	0.97	1	0.96	0.98	0.99	0.98
	SVM-TIA	0.58	0.65	0.79	0.82	0.62	0.69	0.81	0.82
	RAdaBoost	0.92	0.94	0.97	0.98	0.95	0.96	0.98	0.98
	RF-13	0.89	0.91	0.89	0.992	0.92	0.95	0.96	0.95
	DWT-SVM	0.88	0.91	0.94	0.96	0.89	0.9	0.95	0.97
	MV-EDM	1	1	1	1	1	1	1	1
Reverse Bandwagon attack	MEL-once	0.96	0.97	0.98	0.99	0.98	0.98	0.97	0.99
	MV-SVM	0.95	0.9	0.97	0.98	0.96	0.96	0.96	0.98
	SVM-TIA	0.48	0.55	0.57	0.61	0.49	0.57	0.59	0.62
	RAdaBoost	0.98	0.96	0.98	0.98	0.97	0.96	0.98	0.98
	RF-13	0.95	0.96	0.94	0.97	0.94	0.97	0.98	0.97
	DWT-SVM	0.92	0.94	0.97	0.98	0.92	0.95	0.96	0.98
	MV-EDM	1	1	1	1	1	1	1	1