A Comparative Study of Activation Functions of NAR and NARX Neural Network for Long-Term Wind Speed Forecasting in Malaysia

Figure 7

Correlation of coefficient of wind speed forecasting at Kuala Lumpur, Kuantan, and Melaka using both activation functions (tansig and logsig) of NARNN.

(a) Tansig-KL (R = 0.9671)

(b) Logsig-KL (R = 0.9503)

(c) Tansig-Kuantan (R = 0.9463)

(d) Logsig-Kuantan (R = 0.8606)

(e) Tansig-Melaka (R = 0.9703)

(f) Logsig-Melaka (R = 0.9645)