Tourism Demand Forecasting Based on Grey Model and BP Neural Network

Table 4

Fitting value and relative error of training sample data.

Year	1	2	3	4	5	6	7	8	9	10
Actual value	6.96	7.21	7.55	7.95	8.89	9.94	11.13	12.23	13.95	16.21
Estimate	7.31	7.27	7.38	7.92	8.62	9.78	11.12	12.19	13.97	16.22
Relative error	3.5	0.53	2.19	0.91	3.19	1.53	0.12	0.44	0.25	0.01