[Retracted] The Development of “Internet +” Smart Environmental Protection Multi-Environment Perception System

Table 3

Matrix judgment scale table.

Relative importance	Definition	Description
1	Equally important	Both goals are equally important
3	Slightly important	From experience or judgment, consider one goal slightly more important than another
5	Quite important	Think of one goal as more important than the other by experience or judgment
7	Obviously important	I feel that one goal is more important than another, and this importance has been proven in practice
9	Absolutely important	Feel strongly that one goal is more important than another
2, 4, 6, 8	The middle value of two adjacent judgments	Use when you need a compromise