Fig 1.
The framework of the methodology.
Table 1.
Characteristic attributes of data.
Table 2.
Numeric conversion of textual data.
Fig 2.
The structure of the GRU model.
Fig 3.
The structure of the BiGRU model.
Fig 4.
Structural diagram of attention mechanism.
Table 3.
Optimal feature set.
Fig 5.
Prediction results of each BiGRU-attention models.
Table 4.
Parameters of each model.
Fig 6.
Prediction results of each GRU-attention models.
Table 5.
The fitting results each model.
Table 6.
RMSE error values of each model.
Table 7.
MAE error values of each model.
Fig 7.
The validation set results under different split function.
Table 8.
The fitting results under different split function.
Fig 8.
Prediction results of the BiGRU-attention on the raw data.