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

Table 8

Parameters r and λ used in grey prediction models for Example 4.

	GM(1,1)	FGM(1,1)	NIPGM(1,1)	WFGM(1,1)
r	1	0.2282	1	0.2061
λ	1	1	0.6888	0.4505