Parametric Extension of the Most Preferred OWA Operator and Its Application in Search Engine's Rank

Table 6

Aggregation results given to search engines with different values of parameter 𝑟.

Methods/search engines	Parametric Mp-OWA operator with parameter 𝑟									MP-OWA operator
	−4	−3	−2	−1	0	1	2	3	4
LookSmart	0.77	0.82	0.87	0.93	1	1.08	1.17	1.27	1.38	1.08
Lycos	1.1	1.13	1.16	1.2	1.25	1.32	1.39	1.47	1.55	1.32
Altavista	1.21	1.24	1.26	1.29	1.33	1.38	1.44	1.51	1.58	1.38
MSN	1.21	1.24	1.26	1.29	1.33	1.38	1.44	1.51	1.58	1.38
Yahoo	1.1	1.13	1.16	1.2	1.25	1.32	1.39	1.47	1.55	1.32
Teoma	0.95	1.03	1.1	1.17	1.25	1.33	1.41	1.49	1.57	1.33
WiseNut	0.80	0.86	0.92	1	1.08	1.18	1.28	1.38	1.48	1.18
MetaCrawler	1.21	1.24	1.26	1.29	1.33	1.38	1.44	1.51	1.58	1.38
ProFusion	1.46	1.45	1.42	1.41	1.42	1.44	1.48	1.53	1.59	1.44
WebFusion-Max	1.51	1.51	1.5	1.49	1.5	1.52	1.55	1.6	1.65	1.52
WebFusion-OWA	1.59	1.61	1.62	1.64	1.67	1.70	1.74	1.78	1.82	1.70