Energy Consumption Predication in China Based on the Modified Fractional Grey Prediction Model

Table 2

Results from different grey predication models.

Original value	DGM (1, 1) predication	Predication error (%)	FTDGM (1, 1) predicated value (r = 0.88)	Predication value (%)	B-FTDGM (1, 1) predicated value (r = 0.11)	Predication error (%)
441492	457233.2	3.57	444420.4	0.66	444771.5	0.74
455827	473641.2	3.91	451907.1	0.86	461055.2	1.15
471925	490637.9	3.97	458769.2	2.79	455037.9	3.58
487000	508244.7	4.36	465125.7	4.49	486801.3	0.04
MAPE		3.95		2.20		1.38

MAPE (mean absolute percentage error) = .