Table 3.
Predictive performance of Sugeno-type ANFIS models
| Number of input MF | Input MF type | Output MF type | Training RMSE | Testing RMSE |
|---|---|---|---|---|
| 3 each | Triangular MF | Constant | 0.0129 | 0.0148 |
| Trapezoidal MF | Constant | 0.0216 | 0.0249 | |
| Generalised bell MF | Constant | 0.0058 | 0.0099 | |
| Gaussian MF | Constant | 0.0152 | 0.0181 | |
| Gaussian combination MF | Constant | 0.0253 | 0.0181 | |
| Pi shaped MF | Constant | 0.0091 | 0.0121 | |
| Difference between two sigmoidal MF | Constant | 0.0156 | 0.0184 | |
| Product of two sigmoidal MF | Constant | 0.0156 | 0.0184 | |
| 3 each | Triangular MF | Linear | 0.0121 | 0.0139 |
| Trapezoidal MF | Linear | 0.0068 | 0.0105 | |
| Generalised bell MF | Linear | 0.0052 | 0.0100 | |
| Gaussian MF | Linear | 0.0061 | 0.0102 | |
| Gaussian combination MF | Linear | 0.0077 | 0.0111 | |
| Pi shaped MF | Linear | 0.0057 | 0.0100 | |
| Difference between two sigmoidal MF | Linear | 0.0059 | 0.0101 | |
| Product of two sigmoidal MF | Linear | 0.0059 | 0.0101 |
MF membership function