## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Predictive** & \multicolumn{2}{c}{**Input**} & \multirow{2}{*}{**Stages**} & \multirow{2}{*}{**RMSE**} & \multirow{2}{*}{**MAE**} & \multirow{2}{*}{**LMI**} & \multirow{2}{*}{**CC**} & \multirow{2}{*}{**WI**} & \multirow{2}{*}{**SRMSE**} \\
**Models** & & & & & & & & & \\ \hline ANFIS-PSO & Model-1 & Train & 0.294 & 0.198 & 0.675 & 0.919 & 0.956 & 16.558 \\ ANFIS-PSO & Model-1 & Test & 0.394 & 0.291 & 0.531 & 0.871 & 0.928 & 23.716 \\ ANFIS-PSO & Model-2 & Train & 0.235 & 0.187 & 0.693 & 0.949 & 0.973 & 13.266 \\ ANFIS-PSO & Model-2 & Test & 0.497 & 0.317 & 0.488 & 0.816 & 0.901 & 29.904 \\ ANFIS-PSO & Model-3 & Train & 0.340 & 0.236 & 0.612 & 0.890 & 0.939 & 19.183 \\ ANFIS-PSO & Model-3 & Test & 0.432 & 0.314 & 0.493 & 0.844 & 0.906 & 26.010 \\ ANFIS-PSO & Model-4 & Train & 0.305 & 0.224 & 0.632 & 0.912 & 0.952 & 17.197 \\ ANFIS-PSO & Model-4 & Test & 0.397 & 0.291 & 0.531 & 0.869 & 0.927 & 23.916 \\ ANFIS-PSO & Model-5 & Train & 0.265 & 0.182 & 0.701 & 0.935 & 0.966 & 14.916 \\ ANFIS-PSO & Model-5 & Test & 0.401 & 0.274 & 0.558 & 0.868 & 0.929 & 24.129 \\ ANFIS-PSO & Model-6 & Train & 0.459 & 0.352 & 0.421 & 0.787 & 0.873 & 25.894 \\ ANFIS-PSO & Model-6 & Test & 0.541 & 0.407 & 0.343 & 0.743 & 0.848 & 32.564 \\
**ANFIS-PSO & Model-7 & Train & **0.206** & **0.157** & **0.742** & **0.961** & **0.980** & **11.791** \\
**ANFIS-PSO** & **Model-7** & **Test** & **0.283** & **0.213** & **0.659** & **0.935** & **0.965** & **17.671** \\ ANFIS-PSO & Model-8 & Train & 0.208 & 0.162 & 0.733 & 0.960 & 0.980 & 11.886 \\ ANFIS-PSO & Model-8 & Test & 0.403 & 0.277 & 0.555 & 0.876 & 0.934 & 25.109 \\ ANFIS-PSO & Model-9 & Train & 0.346 & 0.246 & 0.596 & 0.886 & 0.936 & 19.766 \\ ANFIS-PSO & Model-9 & Test & 0.414 & 0.310 & 0.502 & 0.855 & 0.914 & 25.852 \\ ANFIS-PSO & Model-10 & Train & 0.267 & 0.201 & 0.670 & 0.934 & 0.965 & 15.260 \\ ANFIS-PSO & Model-10 & Test & 0.307 & 0.232 & 0.628 & 0.923 & 0.958 & 19.156 \\ ANFIS-PSO & Model-11 & Train & 0.347 & 0.255 & 0.580 & 0.886 & 0.936 & 19.798 \\ ANFIS-PSO & Model-11 & Test & 0.629 & 0.356 & 0.429 & 0.690 & 0.828 & 39.252 \\ ANFIS-PSO & Model-12 & Train & 0.404 & 0.290 & 0.523 & 0.841 & 0.907 & 23.078 \\ ANFIS-PSO & Model-12 & Test & 0.467 & 0.355 & 0.429 & 0.812 & 0.891 & 29.123 \\ ANFIS-PSO & Model-13 & Train & 0.258 & 0.186 & 0.695 & 0.938 & 0.967 & 14.757 \\ ANFIS-PSO & Model-13 & Test & 0.379 & 0.274 & 0.560 & 0.880 & 0.936 & 23.629 \\ ANFIS-PSO & Model-14 & Train & 0.244 & 0.184 & 0.698 & 0.945 & 0.971 & 13.950 \\ ANFIS-PSO & Model-14 & Test & 0.401 & 0.284 & 0.544 & 0.875 & 0.934 & 25.006 \\ ANFIS-PSO & Model-15 & Train & 0.360 & 0.258 & 0.575 & 0.876 & 0.931 & 20.570 \\ ANFIS-PSO & Model-15 & Test & 0.440 & 0.322 & 0.484 & 0.835 & 0.900 & 27.448 \\ ANFIS-PSO & Model-16 & Train & 0.256 & 0.195 & 0.680 & 0.939 & 0.968 & 14.652 \\ ANFIS-PSO & Model-16 & Test & 0.292 & 0.217 & 0.652 & 0.931 & 0.964 & 18.211 \\ ANFIS-PSO & Model-17 & Train & 0.288 & 0.216 & 0.645 & 0.923 & 0.959 & 16.430 \\ ANFIS-PSO & Model-17 & Test & 0.313 & 0.244 & 0.608 & 0.920 & 0.957 & 19.547 \\ ANFIS-PSO & Model-18 & Train & 0.399 & 0.295 & 0.516 & 0.845 & 0.912 & 22.818 \\ ANFIS-PSO & Model-18 & Test & 0.479 & 0.386 & 0.380 & 0.810 & 0.896 & 29.878 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: The prediction performance of the hybrid ANFIS-PSO model for all proposed input combinations over the training and testing stage. The boldface denotes the best modeling results.