## 3 Experiment and Results
### Experimental Results and Analysis
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Site**} & \multirow{2}{*}{**Model**} & \multicolumn{6}{c}{**Wind Speed Forecasting Result**} \\ \cline{3-10}  & & **MAE** & **RMSE** & **STDAPE** & **DA** & **U1** & **U2** & **MAPE** & **R\({}^{2}\)** \\ \hline \multirow{4}{*}{Site 1} & MODA-CM2 & 0.3336 & 0.4826 & 8.47\% & 77.86\% & 0.0495 & 0.88 & 8.04\% & 0.9671 \\  & MODA-CM3 & 0.3038 & 0.4388 & 7.71\% & 79.54\% & 0.045 & 0.8761 & 7.33\% & 0.9729 \\  & MODA-CM4 & 0.2747 & 0.3969 & 6.98\% & 82.42\% & 0.0407 & 0.8736 & 6.63\% & 0.9779 \\  & MODA-CM5 & 0.2455 & 0.3551 & 6.24\% & 84.71\% & 0.0364 & 0.8735 & 5.92\% & 0.9823 \\ \hline \multirow{4}{*}{Site 2} & MODA-CM2 & 0.3347 & 0.4866 & 11.57\% & 77.66\% & 0.0546 & 0.935 & 9.16\% & 0.9612 \\  & MODA-CM3 & 0.3053 & 0.444 & 10.84\% & 79.74\% & 0.0498 & 0.922 & 8.38\% & 0.9677 \\  & MODA-CM4 & 0.2761 & 0.4001 & 9.56\% & 82.03\% & 0.0449 & 0.9077 & 7.57\% & 0.9739 \\  & MODA-CM5 & 0.2468 & 0.3549 & 8.65\% & 84.13\% & 0.0403 & 0.9007 & 6.77\% & 0.9789 \\ \hline \multirow{4}{*}{Site 3} & MODA-CM2 & 0.3734 & 0.5573 & 11.29\% & 79.34\% & 0.0609 & 0.9129 & 9.94\% & 0.9419 \\  & MODA-CM3 & 0.3408 & 0.4907 & 10.26\% & 80.34\% & 0.0556 & 0.0309 & 8.89\% & 0.9517 \\  & MODA-CM4 & 0.3086 & 0.4441 & 9.27\% & 81.83\% & 0.0504 & 0.8955 & 8.13\% & 0.9606 \\  & MODA-CM5 & 0.2762 & 0.3978 & 8.44\% & 83.22\% & 0.0451 & 0.9951 & 7.29\% & 0.9685 \\ \hline \multirow{4}{*}{Site 4} & MODA-CM2 & 0.4509 & 0.6336 & 12.34\% & 77.66\% & 0.0604 & 0.8293 & 10.65\% & 0.9465 \\  & MODA-CM3 & 0.4107 & 0.5774 & 11.26\% & 80.04\% & 0.055 & 0.8293 & 9.70\% & 0.9558 \\  & MODA-CM4 & 0.3728 & 0.5245 & 10.22\% & 81.73\% & 0.058 & 0.8329 & 8.79\% & 0.9636 \\  & MODA-CM5 & 0.3334 & 0.4693 & 9.09\% & 83.61\% & 0.0447 & 0.8365 & 7.86\% & 0.9711 \\ \hline \multirow{4}{*}{Site 1} & \multicolumn{6}{c}{**Wind Power Forecasting Result**} \\ \cline{3-10}  & MODA-CM2 & 30.4507 & 51.8389 & 43.30\% & 76.86\% & 0.0519 & 0.9746 & 16.11\% & 0.9872 \\  & MODA-CM3 & 27.7441 & 47.0719 & 38.51\% & 79.19\% & 0.0427 & 0.9691 & 14.64\% & 0.9895 \\  & MODA-CM4 & 25.1217 & 42.7923 & 35.75\% & 80.64\% & 0.0429 & 0.9664 & 13.30\% & 0.9913 \\  & MODA-CM5 & 22.4712 & 38.2835 & 31.23\% & 81.83\% & 0.0383 & 0.9648 & 11.87\% & 0.9931 \\ \hline \multirow{4}{*}{Site 2} & MODA-CM2 & 22.0638 & 35.0959 & 538.95\% & 78.25\% & 0.044 & 0.5185 & 33.41\% & 0.9922 \\  & MODA-CM3 & 20.1148 & 31.8624 & 469.76\% & 80.54\% & 0.0399 & 0.5708 & 29.73\% & 0.9935 \\  & MODA-CM4 & 18.1789 & 28.8482 & 451.01\% & 82.42\% & 0.0362 & 0.5867 & 27.77\% & 0.9947 \\  & MODA-CM5 & 16.2631 & 25.6994 & 387.20\% & 83.71\% & 0.0322 & 0.6368 & 24.37\% & 0.9958 \\ \hline \multirow{4}{*}{Site 3} & MODA-CM2 & 35.7897 & 65.9754 & 42.12\% & 74.48\% & 0.0939 & 0.9555 & 19.22\% & 0.9581 \\  & MODA-CM3 & 23.6873 & 60.0973 & 38.53\% & 77.76\% & 0.0865 & 0.5898 & 17.61\% & 0.9636 \\ \cline{1-1}  & MODA-CM4 & 29.6624 & 54.9203 & 34.63\% & 79.54\% & 0.0782 & 0.9615 & 15.93\% & 0.9711 \\ \cline{1-1}  & MODA-CM5 & 26.4136 & 48.6081 & 31.34\% & 81.83\% & 0.0692 & 0.9668 & 14.28\% & 0.9774 \\ \hline \multirow{4}{*}{Site 4} & MODA-CM2 & 50.0333 & 83.8996 & 749.01\% & 76.17\% & 0.0772 & 0.7179 & 43.81\% & 0.9702 \\ \cline{1-1}  & MODA-CM3 & 45.6821 & 76.5383 & 76.34\% & 77.46\% & 0.0704 & 0.6871 & 41.01\% & 0.9752 \\ \cline{1-1}  & MODA-CM4 & 41.1558 & 68.8028 & 626.17\% & 79.15\% & 0.0633 & 0.623 & 36.33\% & 0.9789 \\ \cline{1-1}  & MODA-For Site 4, the MAPE values of the combined model (CM5) for wind speed and wind power forecasting were 7.86% and 33.05%, respectively. Compared with the other three combined models with the highest MAPE values, the combined model with five sub-models improved wind speed and wind power forecasting by 2.79% and 10.76%, respectively. Comparing the combined models and sub-models, the forecasting accuracy of the combined models was better. A comparison of the wind speed and wind power forecasting results for Site 4 is presented in Figure 5.  
**Remark 4**.