Design and Evaluation of the Interface of Recreational Intelligent Escort Products

Table 4

1–9 quantification and meaning of linguistic terms of proportional scales.

Scale	Judgment	The relative importance between elements and	Fuzzy number	Countdown
1	Equally important	Comparison of two indicators is equally important	1, 1, 1	1, 1, 1
2			1, 2, 3	1/3, 1/2, 1
3	Slightly more important	One metric is slightly more important than the other	2, 3, 4	1/4, 1/3, 1/2
4			3, 4, 5	1/5, 1/4, 1/3
5	Obviously important	One metric is significantly more important than the other	4, 5, 6	1/6, 1/5, 1/4
6			5, 6, 7	1/7, 1/6, 1/5
7	Very important	One metric is very important over another	6, 7, 8	1/8, 1/7, 1/6
8			7, 8, 9	1/9, 1/8, 1/7
9	Extremely important	The extreme importance of one metric over another	8, 9, 10	1/10, 1/9, 1/8

Note: 2, 4, 6, and 8 are the compromise values,  =  . One indicator is less important than the other, using the reciprocal representation.