A Novel Weighted Fractional GM(1,1) Model and Its Applications

Table 6

Parameters r and λ used in grey prediction models for Example 3.

	GM(1,1)	FGM(1,1)	NIPGM(1,1)	WFGM(1,1)
r	1	0.4318	1	0.3842
λ	1	1	0.7464	0.4446