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

Table 4

Parameters r and λ used in grey prediction models for Example 2.

	GM(1,1)	FGM(1,1)	NIPGM(1,1)	WFGM(1,1)
r	1	0.4481	1	0.7499
λ	1	1	0.6562	0.5325