Fig 1.
Flow chart of SVR algorithm based on K-CV.
Fig 2.
SVR parameter optimization based on GA.
Fig 3.
The SVR algorithm based on IPSO.
Fig 4.
The twitter data of regions 5 and 8.
Table 1.
Evaluation index results of model 1 for 10 regions of US.
Table 2.
Evaluation index results of model 2 for 10 regions of US.
Table 3.
Evaluation index results of model 3 for 10 regions of US.
Table 4.
Comparison of the calculation time for each algorithm (in models 1-3).
Fig 5.
The trained and tested results of model 1 for 10 regions.
Fig 6.
The trained and tested results of model 2 for 10 regions.
Fig 7.
The trained and tested results of model 3 for 10 regions.