A Novel Nonadditive Collaborative-Filtering Approach Using Multicriteria Ratings

Table 3

Various precisions (%) of WAM and non-additive approach.

Method	Precision	β
		1	1/2	1/3	1/4	1/5	1/6	1/7	1/8
WAM	Precision-in-top-1	77.01	78.62	79.81	80.72	81.03	81.04	81.66	81.98
	Precision-in-top-3	80.09	81.15	81.61	80.96	80.29	81.64	81.37	81.36
	Precision-in-top-5	78.37	80.43	81.34	81.25	81.19	82.20	82.46	82.07
Non-additive approach	Precision-in-top-1	76.16	78.84	80.21	83.91	86.16	92.45	90.15	88.44
	Precision-in-top-3	76.03	78.19	80.33	82.89	85.32	88.68	88.67	88.58
	Precision-in-top-5	74.88	77.68	79.42	83.08	85.50	88.67	88.63	89.14