International Journal of Photoenergy / 2019 / Article / Tab 2

Research Article

Autoregressive Neural Network for Cloud Concentration Forecast from Hemispheric Sky Images

Table 2

Statistic indicator comparison between the new ANN forecast model and the persistence forecast model for the 50 manually selected pictures.

Simulation’s timeModelRMSE (cloud amount)MAE (cloud amount)

5 minutes (from 145 different pictures)ANN51430.96
Persistence70610.79

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