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. 2020 Sep 9;20(18):5130. doi: 10.3390/s20185130

Table 3.

The detailed results of R2, RMSE, and MAE for different dates using ML methods.

R2 8 July 18 August 1 September 16 September
BP 0.001 0.454 0.595 0.703
SVM 0.001 0.332 0.587 0.702
RF 0.001 0.227 0.465 0.599
RMSE 8 July 18 August 1 September 16 September
BP 3.868 3.533 3.411 4.600
SVM 2.500 3.575 3.328 3.043
RF 2.622 2.541 3.333 3.095
MAE 8 July 18 August 1 September 16 September
BP 2.973 2.765 2.347 3.701
SVM 1.802 2.757 2.844 2.438
RF 2.174 2.138 2.736 2.509