Study on Grey Correlation Degree Decision-Making Model for Investment Scheme on High-Grade Highways in Western China

Table 6

Applicability comparison of decision-making methods.

Applicability	Probability statistics	Fuzzy mathematics	Grey correlation degree
Decision-making scheme
Research object	Randomness	Uncertain perception	Poor information
Basic set	Cantor set	Fuzzy set	Grey obscure set
Method	Frequency statistics	Cut set	Grey sequence operator
Data demand	Canonical distribution	Available membership	Random distribution
Focus on results	Connotation	Denotation	Connotation
Research characteristics	Large sample	By experience	Small sample