Mathematical Problems in Engineering / 2019 / Article / Tab 2

Research Article

Fractional-Order Accumulative Linear Time-Varying Parameters Discrete Grey Forecasting Model

Table 2

Predicted values and predicted errors of different grey prediction models.

YearOriginal valueDGM(1,1) modelTVGM(1,1) modelFTDGM(1,1) model
Predicted valueRelative error (%)Predicted valueRelative error (%)Predicted valueRelative error (%)

20104601348326.895.0344920.352.3744989.652.22
20115321056295.985.8049471.347.0350379.205.32
20125706865579.1814.9154030.115.3256267.531.40
20136247576393.1822.2858593.056.2162739.400.42
20146779288990.431.2763158.226.8369893.153.10
MAPE15.865.552.49

MAPE (mean absolute percentage error) = .

Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.