International Journal of Photoenergy / 2015 / Article / Tab 3

Research Article

A Model for Hourly Solar Radiation Data Generation from Daily Solar Radiation Data Using a Generalized Regression Artificial Neural Network

Table 3

Impact of training data set size on model’s accuracy.

Training data set size (records)Av. overall MAPE

84 (7 solar days)64.3%0.1354
348 (29 solar days)36.8%0.2263
684 (57 solar days)24.1%0.6583
35,040 (1460 solar days)11.8%0.9595

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